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20 Awesome Science Experiments You Can Do Right Now At Home

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We can all agree that science is awesome. And you can bring that awesomeness into your very own home with these 20 safe DIY experiments you can do right now with ordinary household items.

1. Make Objects Seemingly Disappear Refraction is when light changes direction and speed as it passes from one object to another. Only visible objects reflect light. When two materials with similar reflective properties come into contact, light will pass through both materials at the same speed, rendering the other material invisible. Check out this video from BritLab  on how to turn glass invisible using vegetable oil and pyrex glass.

2. Freeze Water Instantly When purified water is cooled to just below freezing point, a quick nudge or an icecube placed in it is all it takes for the water to instantly freeze. You can finally have the power of Frozone from The Incredibles on a very small scale! Check out the video on this "cool" experiment. 

3. Create Oobleck And Make It Dance To The Music Named after a sticky substance in a children’s book by Dr Seuss , Oobleck is a non-Newtonian fluid, which means it can behave as both a solid and a liquid. And when placed on a sound source, the vibrations causes the mixture to gloopily dance. Check out these instructions from Housing A Forest  on how to make this groovy fluid funk out in every way.

4. Create Your Own Hybrid Rocket Engine With a combination of a solid fuel source and a liquid oxidizer, hybrid rocket engines can propel themselves. And on a small scale, you can create your own hybrid rocket engine, using pasta, mouthwash and yeast. Sadly, it won’t propel much, but who said rocket science ain’t easy? Check out this video from NightHawkInLight on how to make this mini engine.

5. Create "Magic Mud" Another non-Newtonian fluid here, this time from the humble potato. "Magic Mud" is actually starch found in potatoes. It’ll remain hard when handled but leave it alone and it turns into a liquid. Make your own “Magic Mud” with this video.

6. Command The Skies And Create A Cloud In A Bottle Not quite a storm in a teacup, but it is a cloud in a bottle. Clouds up in the sky are formed when water vapor cools and condenses into visible water droplets. Create your own cloud in a bottle using a few household items with these wikiHow instructions .

7. Create An Underwater Magical World First synthesized by Adolf van Baeyer in 1871, fluorescein is a non-toxic powder found in highlighter pens, and used by NASA to find shuttles that land in the sea. Create an underwater magical world with this video from NightHawkInLight .

9. Make Your Own Lava Lamp Inside a lava lamp are colored bubbles of wax suspended in a clear or colorless liquid, which changes density when warmed by a heating element at the base, allowing them to rise and fall hypnotically. Create your own lava lamp with these video instructions.

10. Create Magnetic Fluid A ferrofluid is a liquid that contains nanoscale particles of metal, which can become magnetized. And with oil, toner and a magnet , you can create your own ferrofluid and harness the power of magnetism! 

12. Make Waterproof Sand A hydrophobic substance is one that repels water. When sand is combined with a water-resistant chemical, it becomes hydrophobic. So when it comes into contact with water, the sand will remain dry and reusable. Make your own waterproof sand with this video .

13. Make Elephant's Toothpaste Elephant’s toothpaste is a steaming foamy substance created by the rapid decomposition of hydrogen peroxide, which sort of resembles giant-sized toothpaste. Make your own elephant’s toothpaste with these instructions.

14. Make Crystal Bubbles When the temperature falls below 0 o C (32 o F), it’s possible to freeze bubbles into crystals. No instructions needed here, just some bubble mix and chilly weather.

15. Make Moving Liquid Art Mixing dish soap and milk together causes the surface tension of the milk to break down. Throw in different food colorings and create this trippy chemical reaction.

16. Create Colourful Carnations Flowers absorb water through their stems, and if that water has food coloring in it, the flowers will also absorb that color. Create some wonderfully colored flowers with these wikiHow instructions .

17. "Magically" Turn Water Into Wine Turn water into wine with this  video  by experimenter Dave Hax . Because water has a higher density than wine, they can switch places. Amaze your friends with this fun science trick.

18. Release The Energy In Candy (Without Eating It) Dropping a gummy bear into a test tube with potassium chlorate releases the chemical energy inside in an intense chemical reaction. That’s exactly what's happening when you eat candy, kids.

19. Make Water "Mysteriously" Disappear Sodium polyacrylate is a super-absorbent polymer, capable of absorbing up to 300 times its own weight in water. Found in disposable diapers, you can make water disappear in seconds with this video .

20. Create A Rainbow In A Jar Different liquids have different masses and different densities. For example, oil is less dense than water and will float on top of its surface. By combining liquids of different densities and adding food coloring, you can make an entire rainbow in a jar with this video .

There you have it – 20 experiments for you to explore the incredible world of science!

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45 Easy Science Experiments for Kids

Hello, STEM! These simple DIY activities can be done at home or in school.

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Imagine blowing the biggest bubbles imaginable — or even making bubbles within bubbles. Or sending vessels — rockets, tea bags, airplanes — soaring through the sky for impossible distances. Now imagine making things explode, or change colors, or reveal hidden messages with just a few simple mixtures.

First off, it's good to start them off with the scientific method. Give them a journal to record their observations, questions, hypotheses, experiments, results and conclusions. As always, safety counts: wear goggles and coats or aprons if need be (sometimes kids get a kick out of how scientific the protective gear makes them look), and always make sure that the kids are supervised when doing them. (Warning: Some of these are messy!)

These experiments are mostly designed for preschoolers through elementary schoolers — with a couple that are either demonstrations or better for older kids — but if you have a younger one, you can check out these 1-year-old learning activities , toddler learning activities and preschool/kindergarten learning activities , some of which also cover STEM subjects.

Floating Fish

Here's another one that deals with solubility and density.

• Draw the outline of a fish on the bottom of a glass plate or tray in dry-erase marker. Retrace your drawing to make sure all the lines are connected. Let dry for a minute or two.
• Fill the measuring cup with tap water. Place the pour spout just inside the corner of the dish and add water very slowly until it just covers the bottom. Be careful not to pour water directly onto your drawing or make splashes near it. The water will move toward your drawing, eventually surrounding it. Observe what happens. If the water splashes or it doesn’t work on your first try, empty the dish, erase the drawing with a paper towel, dry off the dish, and try again.
• Tilt the dish slightly from side to side. What happens? Jot it down.

The ink in dry erase markers is engineered to be slippery. It’s made with a chemical that causes it to easily release from surfaces. (Permanent markers are made with a chemical that makes the ink stick to surfaces, so be sure not to use these in your experiment!)

The easy-release ink lets go from a surface, but why does it float? There are two reasons. First, dry erase ink isn’t soluble, which means it won’t dissolve in water. Second, dry erase ink is less dense than the water, so it becomes buoyant, meaning it can float. When you tilt the dish, the fish moves around on the water’s surface.

From Good Housekeeping Amazing Science: 83 Hands-on S.T.E.A.M Experiments for Curious Kids! See more in the book »

Brush, Brush!

This one will really get them into brushing their teeth once they scientifically prove all the good things that toothpaste can do.

• Write on sticky notes: Soda 1, Soda 2, Juice 1, and Juice 2. Place them in a row on a counter.
• Fill two glasses halfway with brown soda and place behind the Soda 1 and Soda 2 sticky notes. Fill two glasses halfway with lemon juice and place behind the Juice 1 and Juice 2 sticky notes.
• Carefully place one egg in the bowl. Squeeze a big dollop — about one tablespoon — of toothpaste on top of the egg and gently rub the toothpaste all around with your hands until the egg is completely covered in a thick layer of toothpaste. Repeat with a second egg.
• Gently submerge the toothpaste-covered eggs into the liquids: one egg in the glass labeled Soda 1 and the other egg in the glass labeled Juice 1. Wash and dry your hands.
• Gently submerge the remaining eggs, without toothpaste on them, in the remaining glasses: one in the glass labeled Soda 2 and the other in the glass of juice labeled Juice 2. Wash and dry your hands. Leave the eggs in the glasses for 12 hours.
• After 12 hours, remove the eggs from the glasses of soda one at a time. Rinse them in cool water and pat them dry with the towel. Place each egg by the sticky note of the glass it was in. Are the eggs the same or different colors?
• Remove the eggs from the glasses of juice one at a time. Rinse them under the faucet and pat them dry. Place each egg by the sticky note of the glass it was in. Feel the eggs gently. Does one feel stronger or weaker than the other?
• Write down your observations in your science notebook.

The eggshells in this experiment represent the enamel (outer coating) on your teeth. Toothpaste cleans your teeth and prevents stains: it removes food and drink particles that are stuck on your teeth. Teeth can be stained easily by dark-colored liquids like cola, coffee or tea. The egg without toothpaste will be brown and discolored. The egg covered in toothpaste was protected from turning brown.

Toothpaste also protects your pearly whites from decay (breaking down). The egg without toothpaste left in the lemon juice was worn down and soft to the touch, while the egg that was protected with toothpaste is stronger. The lemon juice is acidic, and those acids broke down the shell just as acidic drinks can wear away your tooth enamel. When a tooth is worn down, a cavity can form more easily. But the fluoride in toothpaste mixes with your saliva to create a protective coating around your tooth enamel. It helps keep your teeth strong and cavity-free.

Grow an Avocado Tree

For an easy lesson in Earth Science, your family can grow an avocado tree from a pit. You can buy an AvoSeedo kit , or just peel the seed and suspend it over water with toothpicks.

Get the tutorial »

Milk Bottle Xylophone

No for an experiment in sound!

• Arrange six glass jars or bottles, all the same size with no lids, in a line. What will each jar sound like when you tap it with a spoon? Make a prediction, then tap each jar. Record your observations.
• Next, put water in each of the jars. Pour 1⁄4 cup (60 ml) of water into the first jar. Add 1⁄2 cup (120 ml) of water to the second jar. Continue in 1⁄4-cup increments, adding 3⁄4 cup (180 ml) of water to the third jar, 1 cup (240 ml) of water to the fourth jar, 11⁄4 cups (300 ml) of water to the fifth jar, and 11⁄2 cups (360 ml) to the sixth jar. Add a couple of drops of food coloring to each jar.
• What will each jar sound like? Will they sound the same or different than when the container was empty? Will they sound the same or different from one another? Record your predictions.
• Tap each jar with a metal spoon. Write down your observations about each jar’s pitch (how high or low a sound is) in your notebook.

Sound waves are created by vibrations, which are back-and-forth movements that are repeated again and again. Pitch depends on the frequency of the waves — how many are created each second. A high pitch is created by high-frequency sound waves, and can sound squeaky. A low pitch is created by low-frequency sound waves, and sounds deep and booming.

When you tapped the jar, it vibrated. The vibrations traveled from the jar to the water to the air and eventually to your ears. The jars with more water had a low pitch. The sound waves vibrated more slowly because they had more water to travel through. The jars with less water had higher pitches. The sound waves vibrated faster because they had less water to travel through. A jar with no water in it makes the highest pitch because it has the least substance to travel through.

"Elephant Toothpaste"

Okay, elephants don't really brush with this stuff, which is made from a chemical reaction between hydrogen peroxide, yeast, dish soap and a few other simple ingredients. But this experiment has a big "wow" factor since, when the substances are mixed, the "toothpaste" foams out of the bottle. You can use it to teach kids about catalysts and exothermic reactions.

Get the tutorial at Babble Dabble Do »

DIY Compass

Explore the way magnetism works, and how it affects everyday objects, by magnetizing a needle and making a DIY compass. You can even spin the compass in the water, and it'll end up pointing the right way again.

Get the tutorial at STEAM Powered Family »

Craft Stick Chain Reaction

Kids can learn about the differences between potential and kinetic energy with this chain reaction. It makes a big impact: Once the tension is released, the pom poms go flying through the air!

Get the the tutorial at Science Sparks »

Color-Changing Invisible Ink

Kids will feel like super-spies when they use this heatless method to reveal pictures or colors written with "invisible ink." You can try different acid/base combinations to see which one makes the most dramatic result.

Get the tutorial at Research Parent »

Paper Bridge

Get the engineering back into STEM with this activity, which challenges kids to create a paper bridge that's strong enough to hold as many pennies as possible. How can they manipulate the paper to make it sturdier? (Hint: Fold it!)

See the paper bridge tutorial at KidsActivities.com »

Challenge your little scientist to lift up an ice cube with just a piece of string. It's possible ... with a little salt to help. Salt melts the ice and lowers the freezing point of the ice cube, which absorbs the heat from the water around it, making the water cold enough to re-freeze around the string.

Get the tutorial at Playdough to Plato »

Marshmallow Catapult

Another lesson in potential and kinetic energy, kids will love sending mini marshmallows flying in the name of science. Change some of the variables and see how that affects the marshmallow's trajectory.

Get the tutorial at Hello, Wonderful »

Leaf Breathing

It's hard for kids to picture how plants and trees "breathe" through their leaves — until they see the bubbles appear on a leaf that's submerged in water. You can also teach them about photosynthesis by putting different leaves in different spots with varying levels of sunlight.

Get the tutorial at KC EDventures »

Hoop-and-Straw Airplane

We all remember how to fold those classic, triangular paper airplanes, but these hoop-and-straw airplanes fly way better (and straighter). Experiment by changing the length of the straw and the size of the hoops and see how it affects the flight.

Get the tutorial at Mombrite »

Film Canister Rocket

Blast off! You don't need jet fuel to make these rockets go, just Alka-Seltzer tablets and baking soda, but they'll be amazed when they achieve lift-off! (Note: If you can't find old film canisters, tubes of Airborne work, too.)

Get the tutorial at Raising Lifelong Learners »

Coin Inertia

Stack up about five or so coins on a piece of cardboard and place it over a glass of water. Then, flick the cardboard out from on top of the glass. Do the coins drop into the water, or ride with the cardboard? Due to inertia, they drop into the water — a very visual (and fun!) demonstration of Newton's First Law of Motion.

Get the tutorial at Engineering Emily »

Apple Oxidation

What works best for keeping an apple from turning brown? Test to find out! Slice up an apple, and let each slice soak in a different liquid. Then take them out, lay them on a tray, and check the brownness after three minutes, six minutes and so on. Not only does this test the properties of different liquids, it also helps students practice the scientific method if they create hypotheses about which liquids would be most effective.

Get the tutorial at Jennifer Findley »

RELATED: 50 Fun Activities for Kids Will Keep Them Entertained for Hours

Coffee Ground Fossils

By making a salt dough with coffee grounds and pressing various shapes into it (toy dinosaur feet, seashells), kids can get a better understanding of how fossils are made. If you poke a hole in the top before it dries, the kids can hang their "fossils" up in their rooms.

Get the tutorial at Crafts by Amanda »

Chromatography Flowers

Chromatography is the process of separating a solution into different parts — like the pigments in the ink used in markers. If you draw stripes around a coffee filter, then fold it up and dip the tip in water, the water will travel up the filter and separate the marker ink into its different pigments (in cool patterns that you can display as a craft project). This family made the end-result even brighter by adding an LED circuit to the center.

Get the tutorial at Steam Powered Family »

Water Walking

You'll need six containers of water for this one: three with clear water, one with red food coloring, one with blue coloring, and one with yellow coloring. Arrange them in a circle, alternating colored and clear containers, and make bridges between the containers with folded paper towels. Your kids will be amazed to see the colored water "walk" over the bridges and into the clear containers, mixing colors, and giving them a first-hand look at the magic of capillarity.

Get the tutorial at Fun Learning for Kids »

Sunscreen Test

This experiment puts the A (art) in STEAM: Paint different designs on construction paper with different sunscreens, leave the papers out in the sun and compare the results. Then, hang your "conclusions" on your fridge.

Get the tutorial at Tonya Staab »

Marisa (she/her) has covered all things parenting, from the postpartum period through the empty nest, for Good Housekeeping since 2018; she previously wrote about parents and families at Parents and Working Mother . She lives with her husband and daughter in Brooklyn, where she can be found dominating the audio round at her local bar trivia night or tweeting about movies.

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37 Cool Science Experiments for Kids to Do at Home

General Education

Are you looking for cool science experiments for kids at home or for class? We've got you covered! We've compiled a list of 37 of the best science experiments for kids that cover areas of science ranging from outer space to dinosaurs to chemical reactions. By doing these easy science experiments, kids will make their own blubber and see how polar bears stay warm, make a rain cloud in a jar to observe how weather changes, create a potato battery that'll really power a lightbulb, and more.

Below are 37 of the best science projects for kids to try. For each one we include a description of the experiment, which area(s) of science it teaches kids about, how difficult it is (easy/medium/hard), how messy it is (low/medium/high), and the materials you need to do the project. Note that experiments labelled "hard" are definitely still doable; they just require more materials or time than most of these other science experiments for kids.

#1: Insect Hotels

• Teaches Kids About: Zoology
• Difficulty Level: Medium
• Messiness Level: Medium

Insect hotels can be as simple (just a few sticks wrapped in a bundle) or as elaborate as you'd like, and they're a great way for kids to get creative making the hotel and then get rewarded by seeing who has moved into the home they built. After creating a hotel with hiding places for bugs, place it outside (near a garden is often a good spot), wait a few days, then check it to see who has occupied the "rooms." You can also use a bug ID book or app to try and identify the visitors.

• Materials Needed
• Shadow box or other box with multiple compartments
• Hot glue gun with glue
• Sticks, bark, small rocks, dried leaves, bits of yarn/wool, etc.

#2: DIY Lava Lamp

• Teaches Kids About: Chemical reactions
• Difficulty Level: Easy

In this quick and fun science experiment, kids will mix water, oil, food coloring, and antacid tablets to create their own (temporary) lava lamp . Oil and water don't mix easily, and the antacid tablets will cause the oil to form little globules that are dyed by the food coloring. Just add the ingredients together and you'll end up with a homemade lava lamp!

• Vegetable oil
• Food coloring
• Antacid tablets

#3: Magnetic Slime

• Teaches Kids About: Magnets
• Messiness Level: High (The slime is black and will slightly dye your fingers when you play with it, but it washes off easily.)

A step up from silly putty and Play-Doh, magnetic slime is fun to play with but also teaches kids about magnets and how they attract and repel each other. Some of the ingredients you aren't likely to have around the house, but they can all be purchased online. After mixing the ingredients together, you can use the neodymium magnet (regular magnets won't be strong enough) to make the magnetic slime move without touching it!

• Liquid starch
• Adhesive glue
• Iron oxide powder
• Neodymium (rare earth) magnet

#4: Baking Soda Volcanoes

• Teaches Kids About: Chemical reactions, earth science
• Difficulty Level: Easy-medium
• Messiness Level: High

Baking soda volcanoes are one of the classic science projects for kids, and they're also one of the most popular. It's hard to top the excitement of a volcano erupting inside your home. This experiment can also be as simple or in-depth as you like. For the eruption, all you need is baking soda and vinegar (dishwashing detergent adds some extra power to the eruption), but you can make the "volcano" as elaborate and lifelike as you wish.

• Baking soda
• Dishwashing detergent
• Large mason jar or soda bottle
• Playdough or aluminum foil to make the "volcano"
• Additional items to place around the volcano (optional)
• Food coloring (optional)

#5: Tornado in a Jar

• Teaches Kids About: Weather
• Messiness Level: Low

This is one of the quick and easy and science experiments for kids to teach them about weather. It only takes about five minutes and a few materials to set up, but once you have it ready you and your kids can create your own miniature tornado whose vortex you can see and the strength of which you can change depending on how quickly you swirl the jar.

• Glitter (optional)

#6: Colored Celery Experiment

• Teaches Kids About: Plants

This celery science experiment is another classic science experiment that parents and teachers like because it's easy to do and gives kids a great visual understanding of how transpiration works and how plants get water and nutrients. Just place celery stalks in cups of colored water, wait at least a day, and you'll see the celery leaves take on the color of the water. This happens because celery stalks (like other plants) contain small capillaries that they use to transport water and nutrients throughout the plant.

• Celery stalks (can also use white flowers or pale-colored cabbage)

#7: Rain Cloud in a Jar

This experiment teaches kids about weather and lets them learn how clouds form by making their own rain cloud . This is definitely a science project that requires adult supervision since it uses boiling water as one of the ingredients, but once you pour the water into a glass jar, the experiment is fast and easy, and you'll be rewarded with a little cloud forming in the jar due to condensation.

• Glass jar with a lid
• Boiling water
• Aerosol hairspray

#8: Edible Rock Candy

• Teaches Kids About: Crystal formation

It takes about a week for the crystals of this rock candy experiment to form, but once they have you'll be able to eat the results! After creating a sugar solution, you'll fill jars with it and dangle strings in them that'll slowly become covered with the crystals. This experiment involves heating and pouring boiling water, so adult supervision is necessary, once that step is complete, even very young kids will be excited to watch crystals slowly form.

• Large saucepan
• Clothespins
• String or small skewers
• Candy flavoring (optional)

#9: Water Xylophone

• Teaches Kids About: Sound waves

With just some basic materials you can create your own musical instrument to teach kids about sound waves. In this water xylophone experiment , you'll fill glass jars with varying levels of water. Once they're all lined up, kids can hit the sides with wooden sticks and see how the itch differs depending on how much water is in the jar (more water=lower pitch, less water=higher pitch). This is because sound waves travel differently depending on how full the jars are with water.

• Wooden sticks/skewers

#10: Blood Model in a Jar

• Teaches Kids About: Human biology

This blood model experiment is a great way to get kids to visual what their blood looks like and how complicated it really is. Each ingredient represents a different component of blood (plasma, platelets, red blood cells, etc.), so you just add a certain amount of each to the jar, swirl it around a bit, and you have a model of what your blood looks like.

• Empty jar or bottle
• Red cinnamon candies
• Marshmallows or dry white lima beans
• White sprinkles

#11: Potato Battery

• Teaches Kids About: Electricity
• Difficulty Level: Hard

Did you know that a simple potato can produce enough energy to keep a light bulb lit for over a month? You can create a simple potato battery to show kids. There are kits that provide all the necessary materials and how to set it up, but if you don't purchase one of these it can be a bit trickier to gather everything you need and assemble it correctly. Once it's set though, you'll have your own farm grown battery!

• Fresh potato
• Galvanized nail
• Copper coin

#12: Homemade Pulley

• Teaches Kids About: Simple machines

This science activity requires some materials you may not already have, but once you've gotten them, the homemade pulley takes only a few minutes to set up, and you can leave the pulley up for your kids to play with all year round. This pulley is best set up outside, but can also be done indoors.

• Clothesline
• 2 clothesline pulleys

#13: Light Refraction

• Teaches Kids About: Light

This light refraction experiment takes only a few minutes to set up and uses basic materials, but it's a great way to show kids how light travels. You'll draw two arrows on a sticky note, stick it to the wall, then fill a clear water bottle with water. As you move the water bottle in front of the arrows, the arrows will appear to change the direction they're pointing. This is because of the refraction that occurs when light passes through materials like water and plastic.

• Sticky note
• Transparent water bottle

#14: Nature Journaling

• Teaches Kids About: Ecology, scientific observation

A nature journal is a great way to encourage kids to be creative and really pay attention to what's going on around them. All you need is a blank journal (you can buy one or make your own) along with something to write with. Then just go outside and encourage your children to write or draw what they notice. This could include descriptions of animals they see, tracings of leaves, a drawing of a beautiful flower, etc. Encourage your kids to ask questions about what they observe (Why do birds need to build nests? Why is this flower so brightly colored?) and explain to them that scientists collect research by doing exactly what they're doing now.

• Blank journal or notebook
• Pens/pencils/crayons/markers
• Tape or glue for adding items to the journal

#15: DIY Solar Oven

• Teaches Kids About: Solar energy

This homemade solar oven definitely requires some adult help to set up, but after it's ready you'll have your own mini oven that uses energy from the sun to make s'mores or melt cheese on pizza. While the food is cooking, you can explain to kids how the oven uses the sun's rays to heat the food.

• Aluminum foil
• Knife or box cutter
• Permanent marker
• Plastic cling wrap
• Black construction paper

#16: Animal Blubber Simulation

• Teaches Kids About: Ecology, zoology

If your kids are curious about how animals like polar bears and seals stay warm in polar climates, you can go beyond just explaining it to them; you can actually have them make some of their own blubber and test it out. After you've filled up a large bowl with ice water and let it sit for a few minutes to get really cold, have your kids dip a bare hand in and see how many seconds they can last before their hand gets too cold. Next, coat one of their fingers in shortening and repeat the experiment. Your child will notice that, with the shortening acting like a protective layer of blubber, they don't feel the cold water nearly as much.

• Bowl of ice water

#17: Static Electricity Butterfly

This experiment is a great way for young kids to learn about static electricity, and it's more fun and visual than just having them rub balloons against their heads. First you'll create a butterfly, using thick paper (such as cardstock) for the body and tissue paper for the wings. Then, blow up the balloon, have the kids rub it against their head for a few seconds, then move the balloon to just above the butterfly's wings. The wings will move towards the balloon due to static electricity, and it'll look like the butterfly is flying.

• Tissue paper
• Thick paper
• Glue stick/glue

#18: Edible Double Helix

• Teaches Kids About: Genetics

If your kids are learning about genetics, you can do this edible double helix craft to show them how DNA is formed, what its different parts are, and what it looks like. The licorice will form the sides or backbone of the DNA and each color of marshmallow will represent one of the four chemical bases. Kids will be able to see that only certain chemical bases pair with each other.

• 2 pieces of licorice
• 12 toothpicks
• Small marshmallows in 4 colors (9 of each color)
• 5 paperclips

#19: Leak-Proof Bag

• Teaches Kids About: Molecules, plastics

This is an easy experiment that'll appeal to kids of a variety of ages. Just take a zip-lock bag, fill it about ⅔ of the way with water, and close the top. Next, poke a few sharp objects (like bamboo skewers or sharp pencils) through one end and out the other. At this point you may want to dangle the bag above your child's head, but no need to worry about spills because the bag won't leak? Why not? It's because the plastic used to make zip-lock bags is made of polymers, or long chains of molecules that'll quickly join back together when they're forced apart.

• Zip-lock bags
• Objects with sharp ends (pencils, bamboo skewers, etc.)

#20: How Do Leaves Breathe?

• Teaches Kids About: Plant science

It takes a few hours to see the results of this leaf experiment , but it couldn't be easier to set up, and kids will love to see a leaf actually "breathing." Just get a large-ish leaf, place it in a bowl (glass works best so you can see everything) filled with water, place a small rock on the leaf to weigh it down, and leave it somewhere sunny. Come back in a few hours and you'll see little bubbles in the water created when the leaf releases the oxygen it created during photosynthesis.

• Large bowl (preferably glass)
• Magnifying glass (optional)

#21: Popsicle Stick Catapults

Kids will love shooting pom poms out of these homemade popsicle stick catapults . After assembling the catapults out of popsicle sticks, rubber bands, and plastic spoons, they're ready to launch pom poms or other lightweight objects. To teach kids about simple machines, you can ask them about how they think the catapults work, what they should do to make the pom poms go a farther/shorter distance, and how the catapult could be made more powerful.

• Popsicle sticks
• Rubber bands
• Plastic spoons
• Paint (optional)

#22: Elephant Toothpaste

You won't want to do this experiment near anything that's difficult to clean (outside may be best), but kids will love seeing this " elephant toothpaste " crazily overflowing the bottle and oozing everywhere. Pour the hydrogen peroxide, food coloring, and dishwashing soap into the bottle, and in the cup mix the yeast packet with some warm water for about 30 seconds. Then, add the yeast mixture to the bottle, stand back, and watch the solution become a massive foamy mixture that pours out of the bottle! The "toothpaste" is formed when the yeast removed the oxygen bubbles from the hydrogen peroxide which created foam. This is an exothermic reaction, and it creates heat as well as foam (you can have kids notice that the bottle became warm as the reaction occurred).

• Clean 16-oz soda bottle
• 6% solution of hydrogen peroxide
• 1 packet of dry yeast
• Dishwashing soap

#23: How Do Penguins Stay Dry?

Penguins, and many other birds, have special oil-producing glands that coat their feathers with a protective layer that causes water to slide right off them, keeping them warm and dry. You can demonstrate this to kids with this penguin craft by having them color a picture of a penguin with crayons, then spraying the picture with water. The wax from the crayons will have created a protective layer like the oil actual birds coat themselves with, and the paper won't absorb the water.

• Penguin image (included in link)
• Spray bottle
• Blue food coloring (optional)

#24: Rock Weathering Experiment

• Teaches Kids About: Geology

This mechanical weathering experiment teaches kids why and how rocks break down or erode. Take two pieces of clay, form them into balls, and wrap them in plastic wrap. Then, leave one out while placing the other in the freezer overnight. The next day, unwrap and compare them. You can repeat freezing the one piece of clay every night for several days to see how much more cracked and weathered it gets than the piece of clay that wasn't frozen. It may even begin to crumble. This weathering also happens to rocks when they are subjected to extreme temperatures, and it's one of the causes of erosion.

• Plastic wrap

#25: Saltwater Density

• Teaches Kids About: Water density

For this saltwater density experiment , you'll fill four clear glasses with water, then add salt to one glass, sugar to one glass, and baking soda to one glass, leaving one glass with just water. Then, float small plastic pieces or grapes in each of the glasses and observe whether they float or not. Saltwater is denser than freshwater, which means some objects may float in saltwater that would sink in freshwater. You can use this experiment to teach kids about the ocean and other bodies of saltwater, such as the Dead Sea, which is so salty people can easily float on top of it.

• Four clear glasses
• Lightweight plastic objects or small grapes

#26: Starburst Rock Cycle

With just a package of Starbursts and a few other materials, you can create models of each of the three rock types: igneous, sedimentary, and metamorphic. Sedimentary "rocks" will be created by pressing thin layers of Starbursts together, metamorphic by heating and pressing Starbursts, and igneous by applying high levels of heat to the Starbursts. Kids will learn how different types of rocks are forms and how the three rock types look different from each other.

• Toaster oven

#27: Inertia Wagon Experiment

• Teaches Kids About: Inertia

This simple experiment teaches kids about inertia (as well as the importance of seatbelts!). Take a small wagon, fill it with a tall stack of books, then have one of your children pull it around then stop abruptly. They won't be able to suddenly stop the wagon without the stack of books falling. You can have the kids predict which direction they think the books will fall and explain that this happens because of inertia, or Newton's first law.

• Stack of books

#28: Dinosaur Tracks

• Teaches Kids About: Paleontology

How are some dinosaur tracks still visible millions of years later? By mixing together several ingredients, you'll get a claylike mixture you can press your hands/feet or dinosaur models into to make dinosaur track imprints . The mixture will harden and the imprints will remain, showing kids how dinosaur (and early human) tracks can stay in rock for such a long period of time.

• Used coffee grounds
• Wooden spoon
• Rolling pin

#29: Sidewalk Constellations

• Teaches Kids About: Astronomy

If you do this sidewalk constellation craft , you'll be able to see the Big Dipper and Orion's Belt in the daylight. On the sidewalk, have kids draw the lines of constellations (using constellation diagrams for guidance) and place stones where the stars are. You can then look at astronomy charts to see where the constellations they drew will be in the sky.

• Sidewalk chalk
• Small stones
• Diagrams of constellations

#30: Lung Model

By building a lung model , you can teach kids about respiration and how their lungs work. After cutting off the bottom of a plastic bottle, you'll stretch a balloon around the opened end and insert another balloon through the mouth of the bottle. You'll then push a straw through the neck of the bottle and secure it with a rubber band and play dough. By blowing into the straw, the balloons will inflate then deflate, similar to how our lungs work.

• Plastic bottle
• Rubber band

#31: Homemade Dinosaur Bones

By mixing just flour, salt, and water, you'll create a basic salt dough that'll harden when baked. You can use this dough to make homemade dinosaur bones and teach kids about paleontology. You can use books or diagrams to learn how different dinosaur bones were shaped, and you can even bury the bones in a sandpit or something similar and then excavate them the way real paleontologists do.

• Images of dinosaur bones

#32: Clay and Toothpick Molecules

There are many variations on homemade molecule science crafts . This one uses clay and toothpicks, although gumdrops or even small pieces of fruit like grapes can be used in place of clay. Roll the clay into balls and use molecule diagrams to attach the clay to toothpicks in the shape of the molecules. Kids can make numerous types of molecules and learn how atoms bond together to form molecules.

• Clay or gumdrops (in four colors)
• Diagrams of molecules

#33: Articulated Hand Model

By creating an articulated hand model , you can teach kids about bones, joints, and how our hands are able to move in many ways and accomplish so many different tasks. After creating a hand out of thin foam, kids will cut straws to represent the different bones in the hand and glue them to the fingers of the hand models. You'll then thread yarn (which represents tendons) through the straws, stabilize the model with a chopstick or other small stick, and end up with a hand model that moves and bends the way actual human hands do.

• Straws (paper work best)
• Twine or yarn

#34: Solar Energy Experiment

• Teaches Kids About: Solar energy, light rays

This solar energy science experiment will teach kids about solar energy and how different colors absorb different amounts of energy. In a sunny spot outside, place six colored pieces of paper next to each other, and place an ice cube in the middle of each paper. Then, observe how quickly each of the ice cubes melt. The ice cube on the black piece of paper will melt fastest since black absorbs the most light (all the light ray colors), while the ice cube on the white paper will melt slowest since white absorbs the least light (it instead reflects light). You can then explain why certain colors look the way they do. (Colors besides black and white absorb all light except for the one ray color they reflect; this is the color they appear to us.)

• 6 squares of differently colored paper/cardstock (must include black paper and white paper)

#35: How to Make Lightning

• Teaches Kids About: Electricity, weather

You don't need a storm to see lightning; you can actually create your own lightning at home . For younger kids this experiment requires adult help and supervision. You'll stick a thumbtack through the bottom of an aluminum tray, then stick the pencil eraser to the pushpin. You'll then rub the piece of wool over the aluminum tray, and then set the tray on the Styrofoam, where it'll create a small spark/tiny bolt of lightning!

• Pencil with eraser
• Aluminum tray or pie tin
• Styrofoam tray

#36: Tie-Dyed Milk

• Teaches Kids About: Surface tension

For this magic milk experiment , partly fill a shallow dish with milk, then add a one drop of each food coloring color to different parts of the milk. The food coloring will mostly stay where you placed it. Next, carefully add one drop of dish soap to the middle of the milk. It'll cause the food coloring to stream through the milk and away from the dish soap. This is because the dish soap breaks up the surface tension of the milk by dissolving the milk's fat molecules.

• Shallow dish
• Milk (high-fat works best)

#37: How Do Stalactites Form?

Have you ever gone into a cave and seen huge stalactites hanging from the top of the cave? Stalactites are formed by dripping water. The water is filled with particles which slowly accumulate and harden over the years, forming stalactites. You can recreate that process with this stalactite experiment . By mixing a baking soda solution, dipping a piece of wool yarn in the jar and running it to another jar, you'll be able to observe baking soda particles forming and hardening along the yarn, similar to how stalactites grow.

• Safety pins
• 2 glass jars

Summary: Cool Science Experiments for Kids

Any one of these simple science experiments for kids can get children learning and excited about science. You can choose a science experiment based on your child's specific interest or what they're currently learning about, or you can do an experiment on an entirely new topic to expand their learning and teach them about a new area of science. From easy science experiments for kids to the more challenging ones, these will all help kids have fun and learn more about science.

What's Next?

Are you also interested in pipe cleaner crafts for kids? We have a guide to some of the best pipe cleaner crafts to try!

Looking for multiple different slime recipes? We tell you how to make slimes without borax and without glue as well as how to craft the ultimate super slime .

Want to learn more about clouds? Learn how to identify every cloud in the sky with our guide to the 10 types of clouds .

Want to know the fastest and easiest ways to convert between Fahrenheit and Celsius? We've got you covered! Check out our guide to the best ways to convert Celsius to Fahrenheit (or vice versa) .

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Christine graduated from Michigan State University with degrees in Environmental Biology and Geography and received her Master's from Duke University. In high school she scored in the 99th percentile on the SAT and was named a National Merit Finalist. She has taught English and biology in several countries.

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50 Fun Kids Science Experiments

Science doesn’t need to be complicated. These easy science experiments below are awesome for kids! They are visually stimulating, hands-on, and sensory-rich, making them fun to do and perfect for teaching simple science concepts at home or in the classroom.

Top 10 Science Experiments

Click on the titles below for the full supplies list and easy step-by-step instructions. Have fun trying these experiments at home or in the classroom, or even use them for your next science fair project!

Baking Soda Balloon Experiment

Can you make a balloon inflate on its own? Grab a few basic kitchen ingredients and test them out! Try amazing chemistry for kids at your fingertips.

Rainbow In A Jar

Enjoy learning about the basics of color mixing up to the density of liquids with this simple water density experiment . There are even more ways to explore rainbows here with walking water, prisms, and more.

This color-changing magic milk experiment will explode your dish with color. Add dish soap and food coloring to milk for cool chemistry!

Seed Germination Experiment

Not all kids’ science experiments involve chemical reactions. Watch how a seed grows , which provides a window into the amazing field of biology .

Egg Vinegar Experiment

One of our favorite science experiments is a naked egg or rubber egg experiment . Can you make your egg bounce? What happened to the shell?

Dancing Corn

Find out how to make corn dance with this easy experiment. Also, check out our dancing raisins and dancing cranberries.

Grow Crystals

Growing borax crystals is easy and a great way to learn about solutions. You could also grow sugar crystals , eggshell geodes , or salt crystals .

Lava Lamp Experiment

It is great for learning about what happens when you mix oil and water. a homemade lava lamp is a cool science experiment kids will want to do repeatedly!

Skittles Experiment

Who doesn’t like doing science with candy? Try this classic Skittles science experiment and explore why the colors don’t mix when added to water.

Lemon Volcano

Watch your kids’ faces light up, and their eyes widen when you test out cool chemistry with a lemon volcano using common household items, baking soda, and vinegar.

Bonus! Popsicle Stick Catapult

Kid tested, STEM approved! Making a popsicle stick catapult is a fantastic way to dive into hands-on physics and engineering.

Grab the handy Top 10 Science Experiments list here!

Free Science Ideas Guide

Grab this free science experiments challenge calendar and have fun with science right away. Use the clickable links to see how to set up each science project.

Get Started With A Science Fair Project

💡Want to turn one of these fun and easy science experiments into a science fair project? Then, you will want to check out these helpful resources.

• Easy Science Fair Projects
• Science Project Tips From A Teacher
• Science Fair Board Ideas

Easy Science Experiments For Kids

Science Experiments By Topic

Are you looking for a specific topic? Check out these additional resources below. Each topic includes easy-to-understand information, everyday examples, and additional hands-on activities and experiments.

• Chemistry Experiments
• Physics Experiments
• Chemical Reaction Experiments
• Candy Experiments
• Plant Experiments
• Kitchen Science
• Water Experiments
• Baking Soda Experiments
• States Of Matter Experiments
• Physical Change Experiments
• Chemical Change Experiments
• Surface Tension Experiments
• Capillary Action Experiments
• Weather Science Projects
• Geology Science Projects
• Space Activities
• Simple Machines
• Static Electricity
• Potential and Kinetic Energy
• Gravity Experiments
• Magnet Activities
• Light Experiments

Science Experiments By Season

• Spring Science
• Summer Science Experiments
• Fall Science Experiments
• Winter Science Experiments

Science Experiments by Age Group

While many experiments can be performed by various age groups, the best science experiments for specific age groups are listed below.

• Science for Toddlers
• Science for Preschoolers
• Science for Kindergarten
• Elementary Science by Season
• Science for 1st Grade
• Science for 2nd Grade
• Science for 3rd Grade
• Science for 4th Grade
• S cience for 5th Grade
• Science for 6th Grade
• Science for Middle School

How To Teach Science

Kids are curious and always looking to explore, discover, check out, and experiment to discover why things do what they do, move as they move, or change as they change! My son is now 13, and we started with simple science activities around three years of age with simple baking soda science.

Here are great tips for making science experiments enjoyable at home or in the classroom.

Safety first: Always prioritize safety. Use kid-friendly materials, supervise the experiments, and handle potentially hazardous substances yourself.

Start with simple experiments: Begin with basic experiments (find tons below) that require minimal setup and materials, gradually increasing complexity as kids gain confidence.

Use everyday items: Utilize common household items like vinegar and baking soda , food coloring, or balloons to make the experiments accessible and cost-effective.

Hands-on approach: Encourage kids to actively participate in the experiments rather than just observing. Let them touch, mix, and check out reactions up close.

Make predictions: Ask kids to predict the outcome before starting an experiment. This stimulates critical thinking and introduces the concept of hypothesis and the scientific method.

Record observations: Have a science journal or notebook where kids can record their observations, draw pictures, and write down their thoughts. Learn more about observing in science. We also have many printable science worksheets .

Theme-based experiments: Organize experiments around a theme, such as water , air , magnets , or plants . Even holidays and seasons make fun themes!

Kitchen science : Perform experiments in the kitchen, such as making ice cream using salt and ice or learning about density by layering different liquids.

Create a science lab: Set up a dedicated space for science experiments, and let kids decorate it with science-themed posters and drawings.

Outdoor experiments: Take some experiments outside to explore nature, study bugs, or learn about plants and soil.

DIY science kits: Prepare science experiment kits with labeled containers and ingredients, making it easy for kids to conduct experiments independently. Check out our DIY science list and STEM kits.

Make it a group effort: Group experiments can be more fun, allowing kids to learn together and share their excitement. Most of our science activities are classroom friendly!

Science shows or documentaries: Watch age-appropriate science shows or documentaries to introduce kids to scientific concepts entertainingly. Hello Bill Nye and the Magic Schoolbus! You can also check out National Geographic, the Discovery Channel, and NASA!

Ask open-ended questions: Encourage critical thinking by asking open-ended questions that prompt kids to think deeper about what they are experiencing.

Celebrate successes: Praise kids for their efforts and discoveries, no matter how small, to foster a positive attitude towards science and learning.

What is the Scientific Method for Kids?

The scientific method is a way scientists figure out how things work. First, they ask a question about something they want to know. Then, they research to learn what’s already known about it. After that, they make a prediction called a hypothesis.

Next comes the fun part – they test their hypothesis by doing experiments. They carefully observe what happens during the experiments and write down all the details. Learn more about variables in experiments here.

Once they finish their experiments, they look at the results and decide if their hypothesis is right or wrong. If it’s wrong, they devise a new hypothesis and try again. If it’s right, they share their findings with others. That’s how scientists learn new things and make our world better!

Go ahead and introduce the scientific method and get kids started recording their observations and making conclusions. Read more about the scientific method for kids .

Engineering and STEM Projects For Kids

STEM activities include science, technology, engineering, and mathematics. In addition to our kids’ science experiments, we have lots of fun STEM activities for you to try. Check out these STEM ideas below.

• Building Activities
• Self-Propelling Car Projects
• Engineering Projects For Kids
• What Is Engineering For Kids?
• Lego STEM Ideas
• LEGO Engineering Activities
• STEM Activities For Toddlers
• STEM Worksheets
• Easy STEM Activities For Elementary
• Quick STEM Challenges
• Easy STEM Activities With Paper  

Printable Science Projects For Kids

If you’re looking to grab all of our printable science projects in one convenient place plus exclusive worksheets and bonuses like a STEAM Project pack, our Science Project Pack is what you need! Over 300+ Pages!

• 90+ classic science activities  with journal pages, supply lists, set up and process, and science information.  NEW! Activity-specific observation pages!
• Best science practices posters  and our original science method process folders for extra alternatives!
• Be a Collector activities pack  introduces kids to the world of making collections through the eyes of a scientist. What will they collect first?
• Know the Words Science vocabulary pack  includes flashcards, crosswords, and word searches that illuminate keywords in the experiments!
• My science journal writing prompts  explore what it means to be a scientist!!
• Bonus STEAM Project Pack:  Art meets science with doable projects!
• Bonus Quick Grab Packs for Biology, Earth Science, Chemistry, and Physics

Subscribe to receive a free 5-Day STEM Challenge Guide

~ projects to try now ~.

Cool Science Experiments Headquarters

Making Science Fun, Easy to Teach and Exciting to Learn!

Science Experiments

35 Easy Science Experiments You Can Do Today!

Looking for easy science experiments to do at home or in the classroom? You’re in luck because we’ve got over 35 easy science activities for kids that will help you make science fun for all ages. 

Most of these simple science experiments for kids are easy to prepare, quick to perform, and use household items or inexpensive materials you can find almost anywhere. To connect the fun to the “why it works” you’ll find an easy to teach explanation with every experiment!

Musical Jars Science Experiment 

This super easy experiment is simple as it is fun! Kids make their own musical instruments with clear jars and water then investigate sound waves, pitch, and more.

When the experiment is complete, use the colorful new “instrument” for a fun music lesson. Kids can play and take turns to “name that tune”!

Detailed Instructions & Video Tutorial ->  Musical Jars Science Experiment

Viscosity of Liquids Science Experiment

Viscosity may be a confusing term for kids at first, but this super easy experiment can help them see viscosity in action!

With marbles, clear jars, and a few household materials, kids will make predictions, record data, and compare the results while they test high and low density liquids.

Detailed Instructions & Video Tutorial ->   Viscosity Science Experiment

Floating Egg Science Experiment

Can a solid egg float? Kids can find the answer and understand why with this quick science experiment. 

Discover just how easy it can be to make a raw egg float while testing the laws of density. We’ve included additional ideas to try so kids can make predictions and test the concept further.

Detailed Instructions & Video Tutorial ->   Floating Egg Science Experiment

Paper Towel Dry Under Water Experiment

Is it possible to keep a paper towel dry even when submerging it under water? The answer is a surprising “yes,” if you use science to help!

Start with the properties of your materials, make a prediction, then explore matter, density, volume, and more.

Detailed Instructions & Video Tutorial ->   Paper Towel Dry Under Water Experiment

Mixing Oil & Water Science Experiment

This simple experiment for kids helps them better understand density and the changes that happen when adding an emulsifier to the mix. 

Detailed Instructions & Video Tutorial ->   Mixing Oil & Water Experiment

Will it Float or Sink Science Experiment

Will it sink or will it float? This fun experiment challenges what students think they know about household items!

Students record their hypothesis for each item then test it to compare what they think will happen against their observations.

Detailed Instructions & Video Tutorial -> Float or Sink Science Experiment

Water Temperature Science Experiment

What does thermal energy look like? In this easy science experiment, kids are able to see thermal energy as they explore the concept in action.

With clear jars and food coloring, students can quickly see how molecules move differently through hot and cold water.

Detailed Instructions & Video Tutorial -> Water Temperature Science Experiment

Balloon Blow-up Science Experiment

Kids will discover how matter reacts when heated and cooled as they watch with surprise as baking soda and vinegar blow the balloon up before their eyes.

Detailed Instructions & Video Tutorial -> Balloon Blow-up Science Experiment

Floating Ping Pong Ball Science Experiment

Kids will giggle with joy with this super easy experiment. With only a ping pong ball and a hair dryer, students will have a great time while exploring Bernoulli’s Principle in action. 

We’ve included additional ideas to further explore the concept with different objects and observe the change in results.

Detailed Instructions & Video Tutorial -> Floating Ping Pong Ball Science Experiment

Hair Stand on End Science Experiment

It’s especially fun for those who’ve never seen static electricity in action before!

Detailed Instructions & Video Tutorial -> Hair Stand on End Science Experiment

Oil Bubbles in Water Science Experiment

Kids explore density and experience some chemistry when creating oil bubbles in water with everyday household items.

This experiment is particularly fun when kids see that they’ve made what looks like a lava lamp!

Detailed Instructions & Video Tutorial ->  Oil Bubbles in Water Science Experiment

Color Changing Water Science Experiment

Kids will be surprised as they watch a new color being “created” without mixing! Using only a clear bowl and glass, some food coloring, and water, this super easy science experiment is quick and easy with a huge wow factor. 

Try it with yellow and blue to follow along with our demonstration video then try different primary color combinations and explore the results.

Detailed Instructions & Video Tutorial ->  Color Changing Water Science Experiment

Magnetic Paper Clip Chain Science Experiment

It may seem a bit like magic but it’s actually science! It’s not hard to capture your kids’ attention with this quick and easy science experiment as they watch paper clips “stick” together and form a chain!

Perfect for younger children, the experiment only takes a few minutes and is a fun way to explore the concept of magnetic transference.

Detailed Instructions & Video Tutorial ->  Magnetic Paper Clip Chain Science Experiment

Is it Magnetic Science Experiment

With only a magnet and a few household items, kids will make and record their predictions, test and observe, then compare what they think is magnetic against the results.

Simple and quick, but some of the results may surprise your students!

Cloud in a Jar Experiment

This simple experiment only requires a few materials but really holds student attention as a cloud forms before their eyes!

Kids will learn new weather vocabulary as they explore how physical changes and reactions happen as clouds begin to take form. We’ve also included a helpful chart on the types of clouds.

Detailed Instructions & Video Tutorial ->  Cloud in a Jar Science Experiment

Magic Milk Science Experiment

Create a dancing rainbow of colors with this easy science experiment for kids!

Using only a few ordinary kitchen items, your students can create a color explosion in ordinary milk when they add our special ingredient. (Hint: The special ingredient (soap!) includes hydrophilic and hydrophobic molecules that make the magic happen!)

Detailed Instructions & Video Tutorial ->  Magic Milk Science Experiment

Walking Water Science Experiment

Water can’t really walk upwards against gravity, but this cool science experiment makes it seem like it can! 

Kids are able to see the capillary action process and learn how attraction and adhesive forces in action allow water to move out of one glass into another. 

Detailed Instructions & Video Tutorial -> Walking Water Science Experiment

Light Refraction Science Experiment

The results of this easy science experiment are so amazing, it makes kids (and adults) think it must be magic!

Young scientists watch in surprise while they see an arrow change directions instantly. Investigating refraction couldn’t be more fun!

Detailed Instructions & Video Tutorial -> Light Refraction Science Experiment

Dancing Raisins Experiment

Learn about the reactions of buoyancy and density in this simple science activity for kids. 

They may not need dancing shoes, but give them a glass of soda pop and the raisins in this fun experiment love to dance!

Detailed Instructions & Video Tutorial -> Dancing Raisins Science Experiment

See Sound Experiment

Kids love this experiment because they are encouraged to drum loudly so they can “see” sound waves in action!

Detailed Instructions & Video Tutorial -> See Sound Science Experiment

Elephant Toothpaste Science Experiment

Grab some giant brushes and get ready to make elephant toothpaste! Although you might not be able to get an elephant excited by this super easy experiment, kids love it!

The impressive and quick results created by the chemical reaction and the heat released in the process makes an abundant amount of fun and colorful foam!

Detailed Instructions & Video Tutorial -> Elephant Toothpaste Science Experiment

Upside Down Glass of Water Science Experiment

We all know what happens when we turn a glass of water upside down, but what if I told you you can do it without the water spilling out?

The experiment only requires a few common items and you’ll be amazed by the results of air pressure in action!

Detailed Instructions & Video Tutorial -> Upside Down Glass of Water Science Experiment

Pick up Ball with a Jar Science Experiment

It almost seems like magic but with the help of science, you can pick up a ball with an open jar!

Instead of magic, this easy science activity uses centripetal force and practice to do what seems like the impossible. 

Detailed Instructions & Video Tutorial -> Pick up Ball with a Jar Experiment

Will It Melt Science Experiment

Can you guess which items will melt? This easy outside experiment challenges what students think they know about the effects of the sun.

Pepper Move Science Experiment

Can you make pepper move and zoom away with just a light touch of your finger? With science you can!

This experiment only takes a few quick minutes from beginning to end, but the reaction caused by surface tension makes kids want to do it over and over. 

Detailed Instructions & Video Tutorial ->  Pepper Move Science Experiment

Crush a Plastic Bottle Science Experiment

Go for it, crush that bottle, but don’t touch it! Although it usually can’t be seen or touched, air pressure is pushing against all surfaces at all times.

With this easy science activity kids can see air pressure at work when they watch a bottle crushes itself!

Detailed Instructions & Video Tutorial -> Crush a Plastic Bottle Science Experiment

Egg in Vinegar Science Experiment

This vinegar science experiment will have your eggs and kids bouncing (with excitement!) before you know it!

Kids can watch and explore the results of chemical reactions as the egg changes from something that seems solid into what feels like something bouncy!

Detailed Instructions & Video Tutorial -> Egg in Vinegar Science Experiment

Straw Through a Potato Science Experiment

Can you make a normal plastic straw go into a raw, solid potato? It seems like something impossible, but science can easily make it possible!

Pick your potatoes then let kids try their strength as they explore air pressure with this super easy experiment.

Detailed Instructions & Video Tutorial -> Straw Through a Potato Science Experiment

Rainbow in a Jar Science Experiment

With only a few household items, they’ll explore mass, volume, and density with every color layer!

Detailed Instructions & Video Tutorial -> Rainbow in a Jar Experiment

Tornado in a Bottle Science Experiment

Kids can have fun while learning more about centripetal force with this fun experiment.

With a little muscle and science, kids watch with amazement as they create their own glitter cyclone in a bottle as the centripetal force vortex appears.

Detailed Instructions & Video Tutorial -> Tornado in a Bottle Science Experiment

Why Doesn’t the Water Leak Science Experiment

Can you poke holes in a plastic bag full of water without the water leaking out? With this super easy science activity you can!

Kids are stunned as they learn about polymers and how they can do what seems to be impossible.

Detailed Instructions & Video Tutorial -> Why Doesn’t the Water Leak Science Experiment

Use a Bottle to Blow-up a Balloon Experiment

Is it possible to blow up a balloon with only water and science? 

In this super easy experiment, kids learn more about how matter behaves as they watch a balloon inflate and deflate as a result of matter being heated and cooled.

Detailed Instructions & Video Tutorial -> Use a Bottle to Blow-up a Balloon Experiment

Orange Float Science Experiment

Kids explore buoyancy as they learn about and test density in this sink or float science activity.

While it only takes a few minutes, this super easy experiment invites kids to predict what they think will happen then discuss why the heavier orange floats!

Detailed Instructions & Video Tutorial -> Orange Float Science Experiment

Pick up Ice with String Science Experiment

With only a few household items, kids learn about freezing temperatures and the results they create in saltwater versus freshwater.

Detailed Instructions & Video Tutorial -> Pick Up Ice with String Science Experiment

Color Changing Walking Water Experiment

Using the concepts explored in our popular Walking Water Science Experiment, kids will see color walk from one glass to another and change colors as it goes!

The quick experiment seems to defy gravity like magic, but don’t worry, kids can find out how science makes it work!

Detailed Instructions & Video Tutorial -> Color Changing Walking Water Experiment

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72 Easy Science Experiments Using Materials You Already Have On Hand

Because science doesn’t have to be complicated.

If there is one thing that is guaranteed to get your students excited, it’s a good science experiment! While some experiments require expensive lab equipment or dangerous chemicals, there are plenty of cool projects you can do with regular household items. We’ve rounded up a big collection of easy science experiments that anybody can try, and kids are going to love them!

Easy Chemistry Science Experiments

Easy physics science experiments, easy biology and environmental science experiments, easy engineering experiments and stem challenges.

1. Taste the Rainbow

Teach your students about diffusion while creating a beautiful and tasty rainbow! Tip: Have extra Skittles on hand so your class can eat a few!

Learn more: Skittles Diffusion

2. Crystallize sweet treats

Crystal science experiments teach kids about supersaturated solutions. This one is easy to do at home, and the results are absolutely delicious!

Learn more: Candy Crystals

3. Make a volcano erupt

This classic experiment demonstrates a chemical reaction between baking soda (sodium bicarbonate) and vinegar (acetic acid), which produces carbon dioxide gas, water, and sodium acetate.

Learn more: Best Volcano Experiments

4. Make elephant toothpaste

This fun project uses yeast and a hydrogen peroxide solution to create overflowing “elephant toothpaste.” Tip: Add an extra fun layer by having kids create toothpaste wrappers for plastic bottles.

5. Blow the biggest bubbles you can

Add a few simple ingredients to dish soap solution to create the largest bubbles you’ve ever seen! Kids learn about surface tension as they engineer these bubble-blowing wands.

Learn more: Giant Soap Bubbles

6. Demonstrate the “magic” leakproof bag

All you need is a zip-top plastic bag, sharp pencils, and water to blow your kids’ minds. Once they’re suitably impressed, teach them how the “trick” works by explaining the chemistry of polymers.

Learn more: Leakproof Bag

7. Use apple slices to learn about oxidation

Have students make predictions about what will happen to apple slices when immersed in different liquids, then put those predictions to the test. Have them record their observations.

Learn more: Apple Oxidation

8. Float a marker man

Their eyes will pop out of their heads when you “levitate” a stick figure right off the table! This experiment works due to the insolubility of dry-erase marker ink in water, combined with the lighter density of the ink.

Learn more: Floating Marker Man

9. Discover density with hot and cold water

There are a lot of easy science experiments you can do with density. This one is extremely simple, involving only hot and cold water and food coloring, but the visuals make it appealing and fun.

Learn more: Layered Water

10. Layer more liquids

This density demo is a little more complicated, but the effects are spectacular. Slowly layer liquids like honey, dish soap, water, and rubbing alcohol in a glass. Kids will be amazed when the liquids float one on top of the other like magic (except it is really science).

Learn more: Layered Liquids

11. Grow a carbon sugar snake

Easy science experiments can still have impressive results! This eye-popping chemical reaction demonstration only requires simple supplies like sugar, baking soda, and sand.

Learn more: Carbon Sugar Snake

12. Mix up some slime

Tell kids you’re going to make slime at home, and watch their eyes light up! There are a variety of ways to make slime, so try a few different recipes to find the one you like best.

13. Make homemade bouncy balls

These homemade bouncy balls are easy to make since all you need is glue, food coloring, borax powder, cornstarch, and warm water. You’ll want to store them inside a container like a plastic egg because they will flatten out over time.

Learn more: Make Your Own Bouncy Balls

14. Create eggshell chalk

Eggshells contain calcium, the same material that makes chalk. Grind them up and mix them with flour, water, and food coloring to make your very own sidewalk chalk.

Learn more: Eggshell Chalk

15. Make naked eggs

This is so cool! Use vinegar to dissolve the calcium carbonate in an eggshell to discover the membrane underneath that holds the egg together. Then, use the “naked” egg for another easy science experiment that demonstrates osmosis .

Learn more: Naked Egg Experiment

16. Turn milk into plastic

This sounds a lot more complicated than it is, but don’t be afraid to give it a try. Use simple kitchen supplies to create plastic polymers from plain old milk. Sculpt them into cool shapes when you’re done!

17. Test pH using cabbage

Teach kids about acids and bases without needing pH test strips! Simply boil some red cabbage and use the resulting water to test various substances—acids turn red and bases turn green.

Learn more: Cabbage pH

18. Clean some old coins

Use common household items to make old oxidized coins clean and shiny again in this simple chemistry experiment. Ask kids to predict (hypothesize) which will work best, then expand the learning by doing some research to explain the results.

Learn more: Cleaning Coins

19. Pull an egg into a bottle

This classic easy science experiment never fails to delight. Use the power of air pressure to suck a hard-boiled egg into a jar, no hands required.

Learn more: Egg in a Bottle

20. Blow up a balloon (without blowing)

Chances are good you probably did easy science experiments like this when you were in school. The baking soda and vinegar balloon experiment demonstrates the reactions between acids and bases when you fill a bottle with vinegar and a balloon with baking soda.

21 Assemble a DIY lava lamp

This 1970s trend is back—as an easy science experiment! This activity combines acid-base reactions with density for a totally groovy result.

22. Explore how sugary drinks affect teeth

The calcium content of eggshells makes them a great stand-in for teeth. Use eggs to explore how soda and juice can stain teeth and wear down the enamel. Expand your learning by trying different toothpaste-and-toothbrush combinations to see how effective they are.

Learn more: Sugar and Teeth Experiment

23. Mummify a hot dog

If your kids are fascinated by the Egyptians, they’ll love learning to mummify a hot dog! No need for canopic jars , just grab some baking soda and get started.

24. Extinguish flames with carbon dioxide

This is a fiery twist on acid-base experiments. Light a candle and talk about what fire needs in order to survive. Then, create an acid-base reaction and “pour” the carbon dioxide to extinguish the flame. The CO2 gas acts like a liquid, suffocating the fire.

25. Send secret messages with invisible ink

Turn your kids into secret agents! Write messages with a paintbrush dipped in lemon juice, then hold the paper over a heat source and watch the invisible become visible as oxidation goes to work.

Learn more: Invisible Ink

26. Create dancing popcorn

This is a fun version of the classic baking soda and vinegar experiment, perfect for the younger crowd. The bubbly mixture causes popcorn to dance around in the water.

27. Shoot a soda geyser sky-high

You’ve always wondered if this really works, so it’s time to find out for yourself! Kids will marvel at the chemical reaction that sends diet soda shooting high in the air when Mentos are added.

Learn more: Soda Explosion

28. Send a teabag flying

Hot air rises, and this experiment can prove it! You’ll want to supervise kids with fire, of course. For more safety, try this one outside.

Learn more: Flying Tea Bags

29. Create magic milk

This fun and easy science experiment demonstrates principles related to surface tension, molecular interactions, and fluid dynamics.

Learn more: Magic Milk Experiment

30. Watch the water rise

Learn about Charles’s Law with this simple experiment. As the candle burns, using up oxygen and heating the air in the glass, the water rises as if by magic.

Learn more: Rising Water

31. Learn about capillary action

Kids will be amazed as they watch the colored water move from glass to glass, and you’ll love the easy and inexpensive setup. Gather some water, paper towels, and food coloring to teach the scientific magic of capillary action.

Learn more: Capillary Action

32. Give a balloon a beard

Equally educational and fun, this experiment will teach kids about static electricity using everyday materials. Kids will undoubtedly get a kick out of creating beards on their balloon person!

Learn more: Static Electricity

33. Find your way with a DIY compass

Here’s an old classic that never fails to impress. Magnetize a needle, float it on the water’s surface, and it will always point north.

Learn more: DIY Compass

34. Crush a can using air pressure

Sure, it’s easy to crush a soda can with your bare hands, but what if you could do it without touching it at all? That’s the power of air pressure!

35. Tell time using the sun

While people use clocks or even phones to tell time today, there was a time when a sundial was the best means to do that. Kids will certainly get a kick out of creating their own sundials using everyday materials like cardboard and pencils.

Learn more: Make Your Own Sundial

36. Launch a balloon rocket

Grab balloons, string, straws, and tape, and launch rockets to learn about the laws of motion.

37. Make sparks with steel wool

All you need is steel wool and a 9-volt battery to perform this science demo that’s bound to make their eyes light up! Kids learn about chain reactions, chemical changes, and more.

Learn more: Steel Wool Electricity

38. Levitate a Ping-Pong ball

Kids will get a kick out of this experiment, which is really all about Bernoulli’s principle. You only need plastic bottles, bendy straws, and Ping-Pong balls to make the science magic happen.

39. Whip up a tornado in a bottle

There are plenty of versions of this classic experiment out there, but we love this one because it sparkles! Kids learn about a vortex and what it takes to create one.

Learn more: Tornado in a Bottle

40. Monitor air pressure with a DIY barometer

This simple but effective DIY science project teaches kids about air pressure and meteorology. They’ll have fun tracking and predicting the weather with their very own barometer.

Learn more: DIY Barometer

41. Peer through an ice magnifying glass

Students will certainly get a thrill out of seeing how an everyday object like a piece of ice can be used as a magnifying glass. Be sure to use purified or distilled water since tap water will have impurities in it that will cause distortion.

Learn more: Ice Magnifying Glass

42. String up some sticky ice

Can you lift an ice cube using just a piece of string? This quick experiment teaches you how. Use a little salt to melt the ice and then refreeze the ice with the string attached.

Learn more: Sticky Ice

43. “Flip” a drawing with water

Light refraction causes some really cool effects, and there are multiple easy science experiments you can do with it. This one uses refraction to “flip” a drawing; you can also try the famous “disappearing penny” trick .

Learn more: Light Refraction With Water

44. Color some flowers

We love how simple this project is to re-create since all you’ll need are some white carnations, food coloring, glasses, and water. The end result is just so beautiful!

45. Use glitter to fight germs

Everyone knows that glitter is just like germs—it gets everywhere and is so hard to get rid of! Use that to your advantage and show kids how soap fights glitter and germs.

Learn more: Glitter Germs

46. Re-create the water cycle in a bag

You can do so many easy science experiments with a simple zip-top bag. Fill one partway with water and set it on a sunny windowsill to see how the water evaporates up and eventually “rains” down.

Learn more: Water Cycle

47. Learn about plant transpiration

Your backyard is a terrific place for easy science experiments. Grab a plastic bag and rubber band to learn how plants get rid of excess water they don’t need, a process known as transpiration.

Learn more: Plant Transpiration

48. Clean up an oil spill

Before conducting this experiment, teach your students about engineers who solve environmental problems like oil spills. Then, have your students use provided materials to clean the oil spill from their oceans.

Learn more: Oil Spill

49. Construct a pair of model lungs

Kids get a better understanding of the respiratory system when they build model lungs using a plastic water bottle and some balloons. You can modify the experiment to demonstrate the effects of smoking too.

Learn more: Model Lungs

50. Experiment with limestone rocks

Kids  love to collect rocks, and there are plenty of easy science experiments you can do with them. In this one, pour vinegar over a rock to see if it bubbles. If it does, you’ve found limestone!

Learn more: Limestone Experiments

51. Turn a bottle into a rain gauge

All you need is a plastic bottle, a ruler, and a permanent marker to make your own rain gauge. Monitor your measurements and see how they stack up against meteorology reports in your area.

Learn more: DIY Rain Gauge

52. Build up towel mountains

This clever demonstration helps kids understand how some landforms are created. Use layers of towels to represent rock layers and boxes for continents. Then pu-u-u-sh and see what happens!

Learn more: Towel Mountains

53. Take a play dough core sample

Learn about the layers of the earth by building them out of Play-Doh, then take a core sample with a straw. ( Love Play-Doh? Get more learning ideas here. )

Learn more: Play Dough Core Sampling

54. Project the stars on your ceiling

Use the video lesson in the link below to learn why stars are only visible at night. Then create a DIY star projector to explore the concept hands-on.

Learn more: DIY Star Projector

55. Make it rain

Use shaving cream and food coloring to simulate clouds and rain. This is an easy science experiment little ones will beg to do over and over.

Learn more: Shaving Cream Rain

56. Blow up your fingerprint

This is such a cool (and easy!) way to look at fingerprint patterns. Inflate a balloon a bit, use some ink to put a fingerprint on it, then blow it up big to see your fingerprint in detail.

57. Snack on a DNA model

Twizzlers, gumdrops, and a few toothpicks are all you need to make this super-fun (and yummy!) DNA model.

Learn more: Edible DNA Model

58. Dissect a flower

Take a nature walk and find a flower or two. Then bring them home and take them apart to discover all the different parts of flowers.

59. Craft smartphone speakers

No Bluetooth speaker? No problem! Put together your own from paper cups and toilet paper tubes.

Learn more: Smartphone Speakers

60. Race a balloon-powered car

Kids will be amazed when they learn they can put together this awesome racer using cardboard and bottle-cap wheels. The balloon-powered “engine” is so much fun too.

Learn more: Balloon-Powered Car

61. Build a Ferris wheel

You’ve probably ridden on a Ferris wheel, but can you build one? Stock up on wood craft sticks and find out! Play around with different designs to see which one works best.

Learn more: Craft Stick Ferris Wheel

62. Design a phone stand

There are lots of ways to craft a DIY phone stand, which makes this a perfect creative-thinking STEM challenge.

63. Conduct an egg drop

Put all their engineering skills to the test with an egg drop! Challenge kids to build a container from stuff they find around the house that will protect an egg from a long fall (this is especially fun to do from upper-story windows).

Learn more: Egg Drop Challenge Ideas

64. Engineer a drinking-straw roller coaster

STEM challenges are always a hit with kids. We love this one, which only requires basic supplies like drinking straws.

Learn more: Straw Roller Coaster

65. Build a solar oven

Explore the power of the sun when you build your own solar ovens and use them to cook some yummy treats. This experiment takes a little more time and effort, but the results are always impressive. The link below has complete instructions.

Learn more: Solar Oven

66. Build a Da Vinci bridge

There are plenty of bridge-building experiments out there, but this one is unique. It’s inspired by Leonardo da Vinci’s 500-year-old self-supporting wooden bridge. Learn how to build it at the link, and expand your learning by exploring more about Da Vinci himself.

Learn more: Da Vinci Bridge

67. Step through an index card

This is one easy science experiment that never fails to astonish. With carefully placed scissor cuts on an index card, you can make a loop large enough to fit a (small) human body through! Kids will be wowed as they learn about surface area.

68. Stand on a pile of paper cups

Combine physics and engineering and challenge kids to create a paper cup structure that can support their weight. This is a cool project for aspiring architects.

Learn more: Paper Cup Stack

69. Test out parachutes

Gather a variety of materials (try tissues, handkerchiefs, plastic bags, etc.) and see which ones make the best parachutes. You can also find out how they’re affected by windy days or find out which ones work in the rain.

Learn more: Parachute Drop

70. Recycle newspapers into an engineering challenge

It’s amazing how a stack of newspapers can spark such creative engineering. Challenge kids to build a tower, support a book, or even build a chair using only newspaper and tape!

Learn more: Newspaper STEM Challenge

71. Use rubber bands to sound out acoustics

Explore the ways that sound waves are affected by what’s around them using a simple rubber band “guitar.” (Kids absolutely love playing with these!)

Learn more: Rubber Band Guitar

72. Assemble a better umbrella

Challenge students to engineer the best possible umbrella from various household supplies. Encourage them to plan, draw blueprints, and test their creations using the scientific method.

Learn more: Umbrella STEM Challenge

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Easy Science Experiments for Kids

Looking for some easy experiments to do with the kids? We’ve got you covered with all of our favourite, easy science experiments for kids. The best part about all of these ideas is that they may be simple, but the lessons are powerful! Plus they can be adapted for a wide variety of ages and learning environments.

100+ Genius Easy Science Experiments for Kids

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Fun Science Experiments

First let’s kick things off with a list of easy science experiments for kids that we have done many times over and are a favourite of STEAM Powered Family readers around the world. Almost all of these projects use common household items and are tested by kids and teachers. We have science experiments for all ages, from preschool to middle school, even adults love to do these. The best part is that you can use these ideas to help students gain comfort and eventually mastery of the Scientific Method . This list is also a fantastic place to find ideas for your science fair projects.

Baking Soda and Vinegar Experiments

It is incredible the number of cool science experiments you can create from this one simple chemical reaction between Baking Soda and Vinegar . This endothermic reaction, is a classic acid and base chemical reaction.

Here is the chemical formula of this reaction

C 2 H 4 O 2  + NaHCO 3  -> NaC 2 H 3 O 2  + H 2 O + CO 2 vinegar + sodium bicarbonate -> sodium acetate + water + carbon dioxide

Some of our favourite baking soda and vinegar science activities of all time include Bottle Rockets , Fireworks Experiment , Baking Soda Oobleck , and Hatching Dinosaur Eggs . No matter which one you pick, you must try at least one vinegar and baking soda experiment when little scientists are first learning about chemistry.

Balloon Races – Physics Science Experiment

This fast paced, exciting science experiment explores the principles of physics and Newton’s Laws of Motion. It is so simple, kids won’t believe how much they are learning while having fun! Balloon Races make a fantastic activity for the classroom, camp, after school program or at home when the kids need to burn off some energy while learning!

Build a Compass – A Magnetism Science Experiment

Did you know it is actually very easy to build a compass ? All you need is a bowl of water, a needle and a cork! Have your children explore the same magnetic forces that inspired Einstein as a child in this fun science experiment.

Lollipop Layers Density Experiment

Density is such a fun phenomenon to explore, and in this version of a density experiment we are using candy! Lollipop layers is so simple, all you need is a bunch of lollipops or hard candies, water, and a patient hand. The result… GORGEOUS!

Greenhouse Effect Science Experiment

Climate change experiments are so important for helping foster a deep understanding in our students. In this Greenhouse Effect Science Experiment we learn how gas are changing the atmosphere and affecting global temperatures.

Volcano Experiment

A classic science project for kids, making a volcano can be as simple or as complex as you want to make it. The goal of the exercise, a big, bubbly reaction that is sure to WOW students. Here are some of our favourite Volcano Experiments we have done.

Have you ever made a Lava Lamp at home? This sensory science experiment is mesmerizing! Watching those bubbles bounce and dance and play is sure to capture students of all ages. Best of all, we have 5 different ways you can make a Lava Lamp (including the old favourite with alka seltzer), so no matter what supplies you have available, we have a Lava Lamp experiment you can do.

Make Milk Plastic

While teaching elementary science I was always on the hunt for cool science experiments that would impress my kids and really stretch their interests and foster their curiosity. One of the biggest hits of all time was a surprisingly simple experiment, that we never really considered as possible… making plastics. Specifically making bioplastics out of milk . With this concept you can create a lesson that is a powerful way to explore polymers with kids. This easy science experiment is a sure fire hit with students and gives them a wonderful keepsake of their studies.

Bouncy Naked Egg in Vinegar Experiment

Have you ever tried to shell a raw egg? Impossible you say? Challenge your hypothesis in this egg in vinegar science experiment ! Not only will you remove the shell from a raw egg, but the result is a bouncy, rubbery, raw egg. An incredibly simple science experiment, it can also be used to teach higher level concepts in osmosis and biology for students learning about the parts of the cell.

Making Water Rise Experiment Magic

When we did this water experiment the kids jaws hit the floor! It is so simple, but the results shock the kids. This is one very easy science experiment that is also incredibly memorable. It teaches the science of creating a vacuum in a very simple approach with just a jar, water and a candle. Learn how to make water rise and wow your students!

Elephant Toothpaste

You have probably seen the Elephant Toothpaste Science Experiment done on TV or at the Science Center where they create a massive gusher that goes many feet into the air, but did you know there is a very simple and easy way you can do this experiment yourself with items you already have available? This classic science experiment is one every student should experience.

Frozen Bubbles

If you live where it gets well below freezing, one of our favourite winter science experiments is to freeze bubbles . There are some specific science principles you need to understand to ensure this experiment is a beautiful success!

Growing Crystals

As a crystal lover and passionate family of rock hounds, the idea of growing crystals is something that we love! Over the years we have found all the ways to simplify and perfect the process so you can easily grow gorgeous crystals and learn the science behind crystallization. We have made crystals from borax, alum and sugar. We even have edible crystals called Rock Candy … yum!!

Explore Surface Tension with Glitter (or Pepper) and Soap

Surface tension is the focus of this simple science experiment that provides a powerful demonstration of the effect soap has on surface tension. Do this easy experiment, all you need is a plate, water, glitter or pepper and dish soap. Such an easy science experiment for kids!

Bottle Crush – Simple Heat Transfer Experiment

Got a soda pop bottle, some hot water and a cold winter day (or a bucket of ice)? Then you have all the makings of a cool science experiment! This this Bottle Crush science experiment , kids feel like all powerful magicians as they crush plastic bottles without touching them.

pH Testing Lab

Have you ever done a pH lab ex periment? In this simple version, you can use items from the kitchen to create a science lab that allows students to explore pH and learn more about acids and bases.

Gummy Mummies – Gummy Bear Mummification Experiment

Gummy Bear Science Experiments are always a hit with kids and in this easy science experiment we explore how the mummification process works. Add an extra fun comparison by also placing some of the gummy bears in liquid.

Walking Rainbow

Want a beautiful rainbow science experiment that is soooo easy it all happens without you even needing to do anything? Simply set it up, walk away, and come back to a beautiful rainbow of colours. In the Walking Rainbow Science Experiment kids learn about capillary action and color mixing. All you need is jars, paper towels, water and food coloring.

Rainbow Rain

On a rainy day, why not make Rainbow Rain in this simple science experiment for kids. The results are beautiful and will brighten a dreary day. All you need is water, shaving cream and a few drops of food colouring.

Skittles Experiment

It doesn’t get any easier than the simple Skittles Experiment . All you need is a plate, some Skittles and water. Soon you will have a spectacular science experiment the kids will beg to do again and again.

It’s been all the rage for a few years, and whether you love it or hate it, making slime can actually be a fantastic science experiment for kids.

Ready to do one of the most simple science experiments, but also the most fun? It’s time to make non-Newtonian Fluids! Known as Oobleck , it turns sold under pressure and liquifies when you remove pressure. And it will keep kids learning hands on and exploring for hours! The best part is all the different science experiments you can do with Oobleck.

Now when you think of Moon Dough , you don’t immediately think of easy science experiments for kids, but that’s because you have never made Moon Dough the way we make Moon Dough! In our recipes we learn about emulsifiers, glow in the dark science, chemical reactions, heat transfer, all while having so much fun exploring science and sensory play with kids of all ages.

Making playdough with your kids is a great way to teach them about mixtures, solutions, substances, and chemical changes. It is also teaches about the importance of formulas and the role each ingredient plays in creating one of the all time most popular sensory play items, playdough!

Magic Milk Experiment

Ready for some serious wow factor in a really easy science experiment? Magic Milk is a classic experiment that always mesmerizes kids. Over the years we have used it to learn about surface tension, space, pollution on Earth Day, and so much more. All you need is milk, dish soap and a drop of food colouring… and watch the magic colour explosion happen!

Simple Snow and Ice Experiment

Is it winter where you live? This is a fantastic, very simple and easy experiment to do with young students. All you need is some jars, snow, ice cubes and water… and watch the melting magic !

Heat Transfer Experiment – Slurpee Making

Kids love this simple slurpee science experiment where they get a cold, sweet treat at the end in the form of a homemade slurpee! Using the science of heat transfer, kids will make their very own slurpee out of juice. A great experiment for learning about temperature, heat and heat transfer.

Flying Ghosts Tea Bag Experiment

Obviously this easy science experiment is perfect for Halloween, but don’t let that stop you from doing it at any time during the year. The results of the flying tea bag experiment are always a hit with kids and all you need is fire and a tea bag to set flight to curiosity!

Ice Fishing

Inspire your little ones to learn more about how salt and water react in this fun ice fishing science experiment .

Water and Oil Experiment

Demonstrate how oil and water don’t mix in this colourful oil and water experiment. All you need is a few simple ingredients: water, oil and food colouring. When it comes to easy science experiments for kids, it doesn’t get easier than this!

Magnet Science – Harry Potter Inspired Wingardium Leviosa

Use the magic of science to wow students, or teach students this experiment so they can wow their friends with their new found magical abilities. You can also use this science to make ghosts fly! Who knew magnet science was so cool?

Marshmallow Science

Marshmallows are the secret to easy science experiments that you never knew existed in your pantry! Learn how to teach concepts around heat, molecules, expansion and more in this marshmallow science experiment .

Sky Science

Kids wondering why the sky changes colour during sunrise and sunsets? Or the always famous, why is the sky blue, question? Explore the science of the sky colours in this easy experiment .

Easy STEM Challenges

Why not combine Science with some Technology, Engineering and Math in these easy STEM Projects for kids.

Build a Popsicle Stick Catapult

One of the original STEM projects kids have been building for generations is the simple catapult. There are lots of different ways you can build a catapult, but here we are making the always easy and popular Popsicle Stick Catapult .

Build a Water Clock

This easy STEM project has some significant historical context that your history loving students will go wild over. Plus building a water clock is surprisingly easy but packs a powerful learning punch.

Make a Glow Salt Circuit

Before you start to worry, building a circuit doesn’t have to be difficult. In fact, once your students master the basics of electricity and circuits, they will want to start adding circuits to everything. To get started, one of the most simple circuit projects you can make is our Glow Salt Circuit . Don’t worry, we provide all the detailed instructions to ensure your project is a hit.

Build a Battery

Another great way to explore electricity science is to build a simple battery out of food. We have built Lemon Batteries , Pumpkin Batteries and even Potato Batteries . Kids love capturing the energy in our foods and using it to light up!

Build a Bridge

A bridge building challenge is a great way to challenge a class either in school, at camp or in an after school program. Kids get to let their innovation, creativity, and understanding of science and engineering go wild as they build their creations. Then test them out against other designs to see which concepts come out on top.

Rube Goldberg Machine

Building simple machines is an incredible STEM project for all ages. With a Rube Goldberg Machine you are linking simple machines into a chain reaction to achieve an end goal. The best part about a Rube Goldberg Machine project is that it challenges students to work together and apply critical thinking and problem skills as they develop their STEM literacy. Check out the Rube Goldberg Machine we built as a Leprechaun Trap .

Build a Catapult Cannon

Catapults may be fun, but as kids get older, they want bigger challenges, bigger launches and bigger fun with their learning. Enter the Catapult Cannon , a Catapult design that launches harder and farther than your regular catapults, and challenges students to apply more advanced engineering and physics concepts.

Build a Confetti Cannon or Seed Bomb Launcher

For a smaller scale challenge with mini cannons, try making this Confetti Cannon , which includes two different designs, one for little learners and one more complex design for older kids. Plus you can use a similar design concept to make a Seed Bomb Launcher for homemade Seed Bombs.

Tower Construction Challenge

A very easy STEM Project is to challenge kids to build a tower. Now you can do this with blocks or LEGO, but up the challenge by having kids build with candy , marshmallows , paper, pasta or even frozen bubbles . Add a time limit to turn this into a one minute STEM challenge.

Make a Thaumatrope

Optical illusions are always a fun experiment for kids. For a quick and easy optical illusion for kids, try building Thaumatropes . It is so easy, especially with our ideas and templates.

Build a Balloon Car

This is a STEM build that is perfect for a classroom or after school group. Build a Balloon Car that is powered by air. For younger kids, challenge them with the Make It Move STEM Challenge .

Biology Science Building Models

Turn a boring Biology lesson into a fun science class with a STEM project inspired by the human body. Build functioning models of The Lungs , The Heart or The Hand .

Science Projects and STEM Activities for the Holidays

Need something specific to celebrate the seasons or holidays? Check out all of these resources featuring the best in easy science experiments for kids with a special theme!

Spring Activities

Summer Activities

Fall Activities

Winter Activities

End of School Year

Valentine’s Day

St. Patrick’s Day

Halloween Activities

Christmas Activities

5 Days of Smart STEM Ideas for Kids

Get started in STEM with easy, engaging activities.

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50 Amazingly Simple Science Experiments for Kids at Home

Science Kindergartners Preschoolers Experiment Resources 30 Comments

Kids love experimenting , and these 50 simple science experiments for kids at home from Brigitte are perfect for all ages! Plus, you probably already have the basic supplies at home.

My daughters and I have had a lot of fun doing science experiments. Each year when we create our spring and summer list , we make sure to include “science days” which are days filled with science experiments.

Sometimes our science experiments don’t work according to plan, but I have been told that all scientists have failures with experiments from time to time.

It’s okay if they aren’t all successes.

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50 Simple Science Experiments with Supplies You Already Have

I love these 50 simple science experiments for you to try with your little scientists. They all use basic household supplies that you probably already have at home!

Most of these are experiments my daughters and I have done together. I hope you enjoy them as much as we have!

Get little ones involved with these easy toddler-friendly science experiment ideas!

Simple Science Experiments with Water

Not only can water  be a blast to play in, but water plus a few basic supplies equals a lot of science fun!

• Make an orange sink and float with an orange buoyancy experiment from Playdough to Plato.
• Compare the amount of salt in different types of water with this salty egg experiment  as seen on Uplifting Mayhem.
• Do a little more sinking or floating with a fun sink or float experiment  even toddlers can do from Hands On As We Grow.
• Use the free printable to record what sinks or floats in an outdoor experiment from Buggy and Buddy.
• Create some beautiful pieces of paper with this rainbow paper experiment from Science Kiddo.
• Talk about solutions as you try the “what dissolves in water” experiment  as seen on Hands On As We Grow.
• Learn about water absorption with this simple experiment from Little Bins for Little Hands.
• Mix some fun colors with this oil and water experiment  from Fun Learning for Kids.
• Make your own lava lamp , just like on  Hands On As We Grow.
• Can you keep all the water in the bag? Try it with a  leak-proof bag experiment  as seen on Hands On As We Grow.
• Learn about surface tension with this  magic finger pepper experiment  found on Hands On As We Grow.
• Make your own  water cycle in a bottle  as seen on A Dab of Glue Will Do.

Simple Science Experiments with Baking Soda and Vinegar

Baking soda + vinegar = a great chemical reaction! This fizzy reaction can fuel a variety of simple science experiments at home.

First of all, we have tested and found out the absolute best combination of baking soda and vinegar to get the best reaction possible. It makes a difference if you add vinegar to baking soda or vice versa! And how much you use!

• Inflate a balloon without blowing into it with a baking soda and vinegar balloon experiment  as seen on Little Bins for Little Hands.
• Practice colors as you do a baking soda and vinegar with color experiment as seen on Hands On As We Grow.
• Have fun outside with an outdoor volcano eruption  as seen on Preschool Inspirations.
• Have more volcano fun by making apple volcanoes as seen on The Resourceful Mama.
• Learn about acids and bases and the chemical reaction that occurs when you make apple seeds dance with a   jumping apple seeds experiment  as seen on JDaniel4s Mom.
• Watch some rice dance with a   dancing rice experiment as seen on Green Kid Crafts.
• Continue your dance party by making raisins dance with a dancing raisin experiment  as seen on 123 Homeschool 4 Me. What other items can you get to dance?
• Learn more about acids and bases by dissolving a sea shell as seen on Teach Beside Me.
• Make an egg shell disappear with this disappearing egg activity  as seen on Premeditated Leftovers.
• See how far you can launch a soda bottle with this baking soda powered boat as seen on Science Sparks.
• Make your own rocks (or eggs) with this fizzy treasure rocks experiment as seen on Living Life and Learning.
• Have some fun this summer with this frozen vinegar experiment as seen on Inspiration Laboratories.

Plant Themed Simple Science Experiments

Enjoy learning about seeds, plant parts, and how plants grow with these simple science experiments.

• Learn about how plants soak up water through their stems with a flower experiment for kids  from Growing A Jeweled Rose.
• Watch seeds sprout as you grow seeds in a jar  as seen on Teaching Mama.
• Learn about the parts of the seed with a seed coat experiment as seen on Gift of Curiosity.
• Build a house out of sponges and then watch it sprout with this sprout house as seen on The Stem Laboratory.
• Learn what liquids allow seeds to grow the best with this seed experiment  as seen on Gift of Curiosity.
• Explore how plants grow towards the light with this shoe-box maze experiment from Plants for Kids.

Animal Themed Simple Science Experiments

Learning about animals can be even more fun with some simple hands-on simple science experiments.

• Find out more about giraffes and create some giraffe spots  as seen on Preschool Powol Packets.
• Learn about how animals in the Arctic keep warm by making an arctic glove  as seen on Steve Spangler Science.
• Discover how penguins stay dry with a penguin feather experiment as seen on Raising Little Superheroes.
• Learn about different bird beaks with a bird beak experiment as seen on Blessed Beyond a Doubt.
• Explore how fish (and hermit crabs) breathe with this gill experiment  as seen on Preschool Powol Packets.
• Learn about sharks with a   shark buoyancy experiment as seen on Little Bins for Little Hands.

Even More Simple Science Experiment for Kids at Home!

If you are still looking for more science fun, you may enjoy the following simple science experiments.

• Find out how sugary drinks hurt teeth with an  eggs-periment  as seen on Feels Like Home Blog.
• Discover geodes (the state rock of Iowa) with this eggshell geode crystal experiment  as seen on Science Bob.
• Learn about air pressure with an egg and bottle experiment  as seen on Science Sparks.
• Find out what causes an apple to brown with this apple science experiment  as seen on Teach Beside Me.
• Make an  edible bubble apple with an experiment as seen on Preschool Powol Packet.
• Learn more about surface tension with a penny and water experiment  as seen on Artful Parent.
• Mix colors like magic with this color changing milk experiment  from Hands On As We Grow.
• Blow up a balloon with this soda and balloon experiment from Learn Play Imagine.
• Practice letters by making beautiful crystal letters as seen on Books and Giggles.
• Make your own indoor hovercraft  as seen on Living Life and Learning.
• Learn about colors with this beautiful butterfly chromatography craft  as seen on Buggy and Buddy.
• Make soap souffle  as seen on Steve Spangler Science.
• After talking about liquids and solids (and finding them in your own home), create oobleck  as seen on Babble Dabble Do. Is it a liquid, or is it a solid?
• Learn about frost by making some indoor frost as seen on Little Bin for Little Hands.
• Make your own homemade butter in a jar as seen on Happy Hooligans.

What scientific experiment will you try first?

About Brigitte Brulz

Brigitte Brulz is a homeschooling mom of two daughters, wife of her high school sweetheart, and author of Jobs of a Preschooler and Pickles, Pickles, I Like Pickles. She offers free coloring pages and activity ideas on her website at BrigitteBrulz.com .

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30 comments.

college brawl says

March 13, 2024 at 1:05 am

Wow, these experiments look like so much fun! I can’t wait to try them out with my kids. We’re always looking for new and creative ways to learn about science at home, and these experiments look like they’ll be perfect for us. Thanks for sharing! 😊

threadsBay says

August 31, 2023 at 3:13 am

I love science experiments! This one is really simple and easy to do.

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The Top 10 Science Experiments of All Time

These seminal experiments changed our understanding of the universe and ourselves..

Every day, we conduct science experiments, posing an “if” with a “then” and seeing what shakes out. Maybe it’s just taking a slightly different route on our commute home or heating that burrito for a few seconds longer in the microwave. Or it could be trying one more variation of that gene, or wondering what kind of code would best fit a given problem. Ultimately, this striving, questioning spirit is at the root of our ability to discover anything at all. A willingness to experiment has helped us delve deeper into the nature of reality through the pursuit we call science. 

A select batch of these science experiments has stood the test of time in showcasing our species at its inquiring, intelligent best. Whether elegant or crude, and often with a touch of serendipity, these singular efforts have delivered insights that changed our view of ourselves or the universe. 

Here are nine such successful endeavors — plus a glorious failure — that could be hailed as the top science experiments of all time.

Eratosthenes Measures the World

Experimental result: The first recorded measurement of Earth’s circumference 

When: end of the third century B.C.

Just how big is our world? Of the many answers from ancient cultures, a stunningly accurate value calculated by Eratosthenes has echoed down the ages. Born around 276 B.C. in Cyrene, a Greek settlement on the coast of modern-day Libya, Eratosthenes became a voracious scholar — a trait that brought him both critics and admirers. The haters nicknamed him Beta, after the second letter of the Greek alphabet. University of Puget Sound physics professor James Evans explains the Classical-style burn: “Eratosthenes moved so often from one field to another that his contemporaries thought of him as only second-best in each of them.” Those who instead celebrated the multitalented Eratosthenes dubbed him Pentathlos, after the five-event athletic competition.

That mental dexterity landed the scholar a gig as chief librarian at the famous library in Alexandria, Egypt. It was there that he conducted his famous experiment. He had heard of a well in Syene, a Nile River city to the south (modern-day Aswan), where the noon sun shone straight down, casting no shadows, on the date of the Northern Hemisphere’s summer solstice. Intrigued, Eratosthenes measured the shadow cast by a vertical stick in Alexandria on this same day and time. He determined the angle of the sun’s light there to be 7.2 degrees, or 1/50th of a circle’s 360 degrees. 

Knowing — as many educated Greeks did — Earth was spherical, Eratosthenes fathomed that if he knew the distance between the two cities, he could multiply that figure by 50 and gauge Earth’s curvature, and hence its total circumference. Supplied with that information, Eratosthenes deduced Earth’s circumference as 250,000 stades, a Hellenistic unit of length equaling roughly 600 feet. The span equates to about 28,500 miles, well within the ballpark of the correct figure of 24,900 miles. 

Eratosthenes’ motive for getting Earth’s size right was his keenness for geography, a field whose name he coined. Fittingly, modernity has bestowed upon him one more nickname: father of geography. Not bad for a guy once dismissed as second-rate.

William Harvey Takes the Pulse of Nature

Experimental result: The discovery of blood circulation

When: Theory published in 1628

Boy, was Galen wrong. 

The Greek physician-cum-philosopher proposed a model of blood flow in the second century that, despite being full of whoppers, prevailed for nearly 1,500 years. Among its claims: The liver constantly makes new blood from food we eat; blood flows throughout the body in two separate streams, one infused (via the lungs) with “vital spirits” from air; and the blood that tissues soak up never returns to the heart. 

Overturning all this dogma took a series of often gruesome experiments. 

High-born in England in 1578, William Harvey rose to become royal physician to King James I, affording him the time and means to pursue his greatest interest: anatomy. He first hacked away (literally, in some cases) at the Galenic model by exsanguinating — draining the blood from — test critters, including sheep and pigs. Harvey realized that if Galen were right, an impossible volume of blood, exceeding the animals’ size, would have to pump through the heart every hour. 

To drive this point home, Harvey sliced open live animals in public, demonstrating their puny blood supplies. He also constricted blood flow into a snake’s exposed heart by finger-pinching a main vein. The heart shrunk and paled; when pierced, it poured forth little blood. By contrast, choking off the main exiting artery swelled the heart. Through studies of the slow heart beats of reptiles and animals near death, he discerned the heart’s contractions, and deduced that it pumped blood through the body in a circuit.

According to Andrew Gregory, a professor of history and philosophy of science at University College London, this was no easy deduction on Harvey’s part. “If you look at a heart beating normally in its normal surroundings, it is very difficult to work out what is actually happening,” he says. 

Experiments with willing people, which involved temporarily blocking blood flow in and out of limbs, further bore out Harvey’s revolutionary conception of blood circulation. He published the full theory in a 1628 book, De Motu Cordis [The Motion of the Heart]. His evidence-based approach transformed medical science, and he’s recognized today as the father of modern medicine and physiology.

Gregor Mendel Cultivates Genetics

Experimental result: The fundamental rules of genetic inheritance 

When: 1855-1863 

A child, to varying degrees, resembles a parent, whether it’s a passing resemblance or a full-blown mini-me. Why? 

The profound mystery behind the inheritance of physical traits began to unravel a century and a half ago, thanks to Gregor Mendel. Born in 1822 in what is now the Czech Republic, Mendel showed a knack for the physical sciences, though his farming family had little money for formal education. Following the advice of a professor, he joined the Augustinian order, a monastic group that emphasized research and learning, in 1843. 

Ensconced at a monastery in Brno, the shy Gregor quickly began spending time in the garden. Fuchsias in particular grabbed his attention, their daintiness hinting at an underlying grand design. “The fuchsias probably gave him the idea for the famous experiments,” says Sander Gliboff, who researches the history of biology at Indiana University Bloomington. “He had been crossing different varieties, trying to get new colors or combinations of colors, and he got repeatable results that suggested some law of heredity at work.”

These laws became clear with his cultivation of pea plants. Using paintbrushes, Mendel dabbed pollen from one to another, precisely pairing thousands of plants with certain traits over a stretch of about seven years. He meticulously documented how matching yellow peas and green peas, for instance, always yielded a yellow plant. Yet mating these yellow offspring together produced a generation where a quarter of the peas gleamed green again. Ratios like these led to Mendel’s coining of the terms dominant (the yellow color, in this case) and recessive for what we now call genes, and which Mendel referred to as “factors.” 

He was ahead of his time. His studies received scant attention in their day, but decades later, when other scientists discovered and replicated Mendel’s experiments, they came to be regarded as a breakthrough. 

“The genius in Mendel’s experiments was his way of formulating simple hypotheses that explain a few things very well, instead of tackling all the complexities of heredity at once,” says Gliboff. “His brilliance was in putting it all together into a project that he could actually do.”

Isaac Newton Eyes Optics

Experimental result: The nature of color and light

When: 1665-1666

Before he was that Isaac Newton — scientist extraordinaire and inventor of the laws of motion, calculus and universal gravitation (plus a crimefighter to boot) — plain ol’ Isaac found himself with time to kill. To escape a devastating outbreak of plague in his college town of Cambridge, Newton holed up at his boyhood home in the English countryside. There, he tinkered with a prism he picked up at a local fair — a “child’s plaything,” according to Patricia Fara, fellow of Clare College, Cambridge. 

Let sunlight pass through a prism and a rainbow, or spectrum, of colors splays out. In Newton’s time, prevailing thinking held that light takes on the color from the medium it transits, like sunlight through stained glass. Unconvinced, Newton set up a prism experiment that proved color is instead an inherent property of light itself. This revolutionary insight established the field of optics, fundamental to modern science and technology. 

Newton deftly executed the delicate experiment: He bored a hole in a window shutter, allowing a single beam of sunlight to pass through two prisms. By blocking some of the resulting colors from reaching the second prism, Newton showed that different colors refracted, or bent, differently through a prism. He then singled out a color from the first prism and passed it alone through the second prism; when the color came out unchanged, it proved the prism didn’t affect the color of the ray. The medium did not matter. Color was tied up, somehow, with light itself. 

Partly owing to the ad hoc, homemade nature of Newton’s experimental setup, plus his incomplete descriptions in a seminal 1672 paper, his contemporaries initially struggled to replicate the results. “It’s a really, really technically difficult experiment to carry out,” says Fara. “But once you have seen it, it’s incredibly convincing.” 

In making his name, Newton certainly displayed a flair for experimentation, occasionally delving into the self-as-subject variety. One time, he stared at the sun so long he nearly went blind. Another, he wormed a long, thick needle under his eyelid, pressing on the back of his eyeball to gauge how it affected his vision. Although he had plenty of misses in his career — forays into occultism, dabbling in biblical numerology — Newton’s hits ensured his lasting fame.

Michelson and Morley Whiff on Ether

Experimental result: The way light moves

Say “hey!” and the sound waves travel through a medium (air) to reach your listener’s ears. Ocean waves, too, move through their own medium: water. Light waves are a special case, however. In a vacuum, with all media such as air and water removed, light somehow still gets from here to there. How can that be? 

The answer, according to the physics en vogue in the late 19th century, was an invisible, ubiquitous medium delightfully dubbed the “luminiferous ether.” Working together at what is now Case Western Reserve University in Ohio, Albert Michelson and Edward W. Morley set out to prove this ether’s existence. What followed is arguably the most famous failed experiment in history. 

The scientists’ hypothesis was thus: As Earth orbits the sun, it constantly plows through ether, generating an ether wind. When the path of a light beam travels in the same direction as the wind, the light should move a bit faster compared with sailing against the wind. 

To measure the effect, miniscule though it would have to be, Michelson had just the thing. In the early 1880s, he had invented a type of interferometer, an instrument that brings sources of light together to create an interference pattern, like when ripples on a pond intermingle. A Michelson interferometer beams light through a one-way mirror. The light splits in two, and the resulting beams travel at right angles to each other. After some distance, they reflect off mirrors back toward a central meeting point. If the light beams arrive at different times, due to some sort of unequal displacement during their journeys (say, from the ether wind), they create a distinctive interference pattern. 

The researchers protected their delicate interferometer setup from vibrations by placing it atop a solid sandstone slab, floating almost friction-free in a trough of mercury and further isolated in a campus building’s basement. Michelson and Morley slowly rotated the slab, expecting to see interference patterns as the light beams synced in and out with the ether’s direction. 

Instead, nothing. Light’s speed did not vary. 

Neither researcher fully grasped the significance of their null result. Chalking it up to experimental error, they moved on to other projects. (Fruitfully so: In 1907, Michelson became the first American to win a Nobel Prize, for optical instrument-based investigations.) But the huge dent Michelson and Morley unintentionally kicked into ether theory set off a chain of further experimentation and theorizing that led to Albert Einstein’s 1905 breakthrough new paradigm of light, special relativity.

Marie Curie’s Work Matters

Experimental result: Defining radioactivity 

Few women are represented in the annals of legendary scientific experiments, reflecting their historical exclusion from the discipline. Marie Sklodowska broke this mold. 

Born in 1867 in Warsaw, she immigrated to Paris at age 24 for the chance to further study math and physics. There, she met and married physicist Pierre Curie, a close intellectual partner who helped her revolutionary ideas gain a foothold within the male-dominated field. “If it wasn’t for Pierre, Marie would never have been accepted by the scientific community,” says Marilyn B. Ogilvie, professor emeritus in the history of science at the University of Oklahoma. “Nonetheless, the basic hypotheses — those that guided the future course of investigation into the nature of radioactivity — were hers.”

The Curies worked together mostly out of a converted shed on the college campus where Pierre worked. For her doctoral thesis in 1897, Marie began investigating a newfangled kind of radiation, similar to X-rays and discovered just a year earlier. Using an instrument called an electrometer, built by Pierre and his brother, Marie measured the mysterious rays emitted by thorium and uranium. Regardless of the elements’ mineralogical makeup — a yellow crystal or a black powder, in uranium’s case — radiation rates depended solely on the amount of the element present. 

From this observation, Marie deduced that the emission of radiation had nothing to do with a substance’s molecular arrangements. Instead, radioactivity — a term she coined — was an inherent property of individual atoms, emanating from their internal structure. Up until this point, scientists had thought atoms elementary, indivisible entities. Marie had cracked the door open to understanding matter at a more fundamental, subatomic level. 

Curie was the first woman to win a Nobel Prize, in 1903, and one of a very select few people to earn a second Nobel, in 1911 (for her later discoveries of the elements radium and polonium). 

“In her life and work,” says Ogilvie, “she became a role model for young women who wanted a career in science.”

Ivan Pavlov Salivates at the Idea

Experimental result: The discovery of conditioned reflexes

When: 1890s-1900s

Russian physiologist Ivan Pavlov scooped up a Nobel Prize in 1904 for his work with dogs, investigating how saliva and stomach juices digest food. While his scientific legacy will always be tied to doggie drool, it is the operations of the mind — canine, human and otherwise — for which Pavlov remains celebrated today.

Gauging gastric secretions was no picnic. Pavlov and his students collected the fluids that canine digestive organs produced, with a tube suspended from some pooches’ mouths to capture saliva. Come feeding time, the researchers began noticing that dogs who were experienced in the trials would start drooling into the tubes before they’d even tasted a morsel. Like numerous other bodily functions, the generation of saliva was considered a reflex at the time, an unconscious action only occurring in the presence of food. But Pavlov’s dogs had learned to associate the appearance of an experimenter with meals, meaning the canines’ experience had conditioned their physical responses. 

“Up until Pavlov’s work, reflexes were considered fixed or hardwired and not changeable,” says Catharine Rankin, a psychology professor at the University of British Columbia and president of the Pavlovian Society. “His work showed that they could change as a result of experience.” 

Pavlov and his team then taught the dogs to associate food with neutral stimuli as varied as buzzers, metronomes, rotating objects, black squares, whistles, lamp flashes and electric shocks. Pavlov never did ring a bell, however; credit an early mistranslation of the Russian word for buzzer for that enduring myth. 

The findings formed the basis for the concept of classical, or Pavlovian, conditioning. It extends to essentially any learning about stimuli, even if reflexive responses are not involved. “Pavlovian conditioning is happening to us all of the time,” says W. Jeffrey Wilson of Albion College, fellow officer of the Pavlovian Society. “Our brains are constantly connecting things we experience together.” In fact, trying to “un-wire” these conditioned responses is the strategy behind modern treatments for post-traumatic stress disorder, as well as addiction.

Robert Millikan Gets a Charge

Experimental result: The precise value of a single electron’s charge

By most measures, Robert Millikan had done well for himself. Born in 1868 in a small town in Illinois, he went on to earn degrees from Oberlin College and Columbia University. He studied physics with European luminaries in Germany. He then joined the University of Chicago’s physics department, and even penned some successful textbooks. 

But his colleagues were doing far more. The turn of the 20th century was a heady time for physics: In the span of just over a decade, the world was introduced to quantum physics, special relativity and the electron — the first evidence that atoms had divisible parts. By 1908, Millikan found himself pushing 40 without a significant discovery to his name. 

The electron, though, offered an opportunity. Researchers had struggled with whether the particle represented a fundamental unit of electric charge, the same in all cases. It was a critical determination for further developing particle physics. With nothing to lose, Millikan gave it a go. 

In his lab at the University of Chicago, he began working with containers of thick water vapor, called cloud chambers, and varying the strength of an electric field within them. Clouds of water droplets formed around charged atoms and molecules before descending due to gravity. By adjusting the strength of the electric field, he could slow down or even halt a single droplet’s fall, countering gravity with electricity. Find the precise strength where they balanced, and — assuming it did so consistently — that would reveal the charge’s value. 

When it turned out water evaporated too quickly, Millikan and his students — the often-unsung heroes of science — switched to a longer-lasting substance: oil, sprayed into the chamber by a drugstore perfume atomizer. 

The increasingly sophisticated oil-drop experiments eventually determined that the electron did indeed represent a unit of charge. They estimated its value to within whiskers of the currently accepted charge of one electron (1.602 x 10-19 coulombs). It was a coup for particle physics, as well as Millikan. 

“There’s no question that it was a brilliant experiment,” says Caltech physicist David Goodstein. “Millikan’s result proved beyond reasonable doubt that the electron existed and was quantized with a definite charge. All of the discoveries of particle physics follow from that.”

Young, Davisson and Germer See Particles Do the Wave

Experimental result: The wavelike nature of light and electrons 

When: 1801 and 1927, respectively 

Light: particle or wave? Having long wrestled with this seeming either/or, many physicists settled on particle after Isaac Newton’s tour de force through optics. But a rudimentary, yet powerful, demonstration by fellow Englishman Thomas Young shattered this convention. 

Young’s interests covered everything from Egyptology (he helped decode the Rosetta Stone) to medicine and optics. To probe light’s essence, Young devised an experiment in 1801. He cut two thin slits into an opaque object, let sunlight stream through them and watched how the beams cast a series of bright and dark fringes on a screen beyond. Young reasoned that this pattern emerged from light wavily spreading outward, like ripples across a pond, with crests and troughs from different light waves amplifying and canceling each other. 

Although contemporary physicists initially rebuffed Young’s findings, rampant rerunning of these so-called double-slit experiments established that the particles of light really do move like waves. “Double-slit experiments have become so compelling [because] they are relatively easy to conduct,” says David Kaiser, a professor of physics and of the history of science at MIT. “There is an unusually large ratio, in this case, between the relative simplicity and accessibility of the experimental design and the deep conceptual significance of the results.”

More than a century later, a related experiment by Clinton Davisson and Lester Germer showed the depth of this significance. At what is now called Nokia Bell Labs in New Jersey, the physicists ricocheted electron particles off a nickel crystal. The scattered electrons interacted to produce a pattern only possible if the particles also acted like waves. Subsequent double slit-style experiments with electrons proved that particles with matter and undulating energy (light) can each act like both particles and waves. The paradoxical idea lies at the heart of quantum physics, which at the time was just beginning to explain the behavior of matter at a fundamental level. 

“What these experiments show, at their root, is that the stuff of the world, be it radiation or seemingly solid matter, has some irreducible, unavoidable wavelike characteristics,” says Kaiser. “No matter how surprising or counterintuitive that may seem, physicists must take that essential ‘waviness’ into account.”

Robert Paine Stresses Starfish

Experimental result: The disproportionate impact of keystone species on ecosystems

When: Initially presented in a 1966 paper

Just like the purple starfish he crowbarred off rocks and chucked into the Pacific Ocean, Bob Paine threw conventional wisdom right out the window. 

By the 1960s, ecologists had come to agree that habitats thrived primarily through diversity. The common practice of observing these interacting webs of creatures great and small suggested as much. Paine took a different approach. 

Curious what would happen if he intervened in an environment, Paine ran his starfish-banishing experiments in tidal pools along and off the rugged coast of Washington state. The removal of this single species, it turned out, could destabilize a whole ecosystem. Unchecked, the starfish’s barnacle prey went wild — only to then be devoured by marauding mussels. These shellfish, in turn, started crowding out the limpets and algal species. The eventual result: a food web in tatters, with only mussel-dominated pools left behind. 

Paine dubbed the starfish a keystone species, after the necessary center stone that locks an arch into place. A revelatory concept, it meant that all species do not contribute equally in a given ecosystem. Paine’s discovery had a major influence on conservation, overturning the practice of narrowly preserving an individual species for the sake of it, versus an ecosystem-based management strategy.

“His influence was absolutely transformative,” says Oregon State University’s Jane Lubchenco, a marine ecologist. She and her husband, fellow OSU professor Bruce Menge, met 50 years ago as graduate students in Paine’s lab at the University of Washington. Lubchenco, the administrator of the National Oceanic Atmospheric Administration from 2009 to 2013, saw over the years the impact that Paine’s keystone species concept had on policies related to fisheries management.

Lubchenco and Menge credit Paine’s inquisitiveness and dogged personality for changing their field. “A thing that made him so charismatic was almost a childlike enthusiasm for ideas,” says Menge. “Curiosity drove him to start the experiment, and then he got these spectacular results.”

Paine died in 2016. His later work had begun exploring the profound implications of humans as a hyper-keystone species, altering the global ecosystem through climate change and unchecked predation.

Adam Hadhazy is based in New Jersey. His work has also appeared in New Scientist and Popular Science , among other publications. This story originally appeared in print as "10 Experiments That Changed Everything"

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15 Classic Science Experiments for Kids and Teens!

If you’re looking for an idea for an upcoming science project, or just looking for something fun to do one afternoon… you’ve come to the right place because we listed some science experiments in this blog!

Here at Student-Tutor, we love science!

From Thomas Edison, Albert Einstein, and Nikola Tesla, to today’s modern renegades like Steven Hawkings, Carl Sagan, and Elon Musk; we see the way science has transformed and revolutionized our world and the way we think about things.

It is without a doubt that these influential leaders once found themselves tinkering, learning, and experimenting as kids and teenagers. Here are some fun science experiments these great scientists may have once enjoyed!

Here Are 10 of the Best Kid’s Science Experiments to Try Today!

These classic science experiments are perfect for learning in the classroom whether you are enrolled in a private or public school . You can also do this at home! Make sure you get your parent or teacher’s permission before jumping in… some of these can be messy! Also, there are some school clubs  that will teach you more of these so find one and join.

1. Rubber Egg Science – Via: Little Bins for Little Hands

Source: Little Bins for Little Hands

The first experiment on this list is one you may already have all of the supplies for!

If you weren’t already aware, there are many different fun egg science experiments ! In this example, we’ll be looking at the timeless “Rubber Egg” experiment; where we’ll be using acetic acid (vinegar) to cause a chemical reaction with calcium carbonate (the eggshell).

The reaction looks like this:

To get started, all you will need is:

• 1 Egg… or a Dozen!
• 1 Mason Jar or Glass Vase.
• 1 Bottle of White Vinegar.
• 1 Week’s Time.

Steps to create this experiment:

• Place your egg inside the jar or vase.
• Cover the egg with vinegar.
• Wait 24 hours, then drain the jar and fill with fresh vinegar.
• Leave the egg in the vinegar for 7 full days, record any changes you observe.
• Drain vinegar, rinse, and report any observed changes to the egg.

Observations and results:

Over the course of this experiment, the egg will undergo a significant change to its physical properties…

Did you notice anything strange or unusual?

• Did you notice any bubbles along the sides of the egg?
• Was the egg soft after the week had passed?
• Can you see through it with a flash light?
• Does the egg bounce?
• Will it pop if you squeeze it?
• What caused this transformation to the shell?
• Why do you think this happened?

The egg looks translucent when you shine a flashlight through it because the hard outside shell is gone. The only part that remains is the thin membrane called a semipermeable membrane. You might have noticed that the egg got a little bigger after soaking in the vinegar. Here’s what happened…Some of the water in the vinegar solution (remember that household vinegar is 96% water) traveled through the egg’s membrane in an effort to equalize the concentration of water on both sides of the membrane. This flow of water through a semipermeable membrane is called osmosis. Via: Steve Spangler Science

See this experiment in action, courtesy of Sick Science!

2. Potato Powered Alarm Clock – Via: PBS Kids

Source: Robert Lee Fulghum

Renewable energy is the future!

With populations all across the world seeking out new ways to power devices, stay cool in the summer, and access all the other many benefits of modern electrical power; maybe it’s time we learn how we can start making our own totally FREE electricity… from potatoes! This is one of the many science experiments that promote sustainable living!

Here’s what you’ll need to start your own tiny power plant:

• Two Potatoes and One Kitchen Plate.
• Three 8″ Pieces of Insulated Copper Wire (each with 2″ of insulation removed).
• Two Pennies.
• Two Common Galvanized Nails.
• One Digital Alarm Clock.
• Advanced: Digital Multimeter.
• Cut a potato in half and put the two halves on a plate so they stand on their flat ends.
• Wrap the end of one piece of wire around a galvanized nail and wrap the end of a second piece of wire around a penny.
• Stick the nail and penny into one half of the potato so that they’re not touching each other.
• Wrap the third piece of wire around the other penny and put it into the other half of the potato.
• Put the other nail into the second half of the potato, but this nail should not have wire wrapped around it.
• Connect the wire from the penny on the first half of the potato to the nail that has no wire on it in the second half of the potato.
• Touch the free ends of the wires to the wires coming out of the digital clock, get power through the clock.
• Advanced: Use your digital multi-meter to see how much power you can generate through the potatoes.

Did your clock turn on? No? Try connecting the wires in different ways… did anything change?

A potato battery is an electrochemical battery, otherwise known as an electrochemical cell. An electrochemical cell is a cell in which chemical energy is converted to electric energy by a spontaneous electron transfer. In the case of the potato, the zinc in the nail reacts with the copper wire. The potato acts as a sort of buffer between the zinc ions and the copper ions. The zinc and copper ions would still react if they touched within the potato but they would only generate heat. Since the potato keeps them apart, the electron transfer has to take place over the copper wires of the circuit, which channels the energy into the clock. Presto! You have potato power. Via: Kidzworld

See this experiment in action, courtesy of Taras Kul

3. Alka-Seltzer Powered Film Canister Rocket – Via: The Science Kiddo

Source: The Science Kiddo

We think most young scientists would agree… there’s almost nothing more fun than sending a rocket soaring into the air! In fact, there are many science experiments that aim to imitate the same concept.

Though you may not be sending a Tesla Roadster from Earth to Mars , you can certainly get some incredible results from launching this Alka-Seltzer powered rocket from an open parking lot! This is another one the science experiments which is perfect for understanding how even the smallest of rockets create enormous amounts of thrust using high-pressure gas. For a detailed overview of basic rocket science, check out “ How Rocket Engines Work ” by How Stuff Works.

No fuel rods necessary… just grab:

• One or more snap-top plastic bottles –  Ex: 35mm film canisters (vintage, right?), Airborne tablet tubes, M&M Minis tubes, etc… get creative!
• A bottle of water.
• Alka-Seltzer tablets.
• Cardboard & hot glue to construct a proper rocket frame (optional).
• Protective goggles – Safety first!
• Construct your rocket.
• Add water (fuel) to your canister.
• Drop one Alka-Seltzer tablet (oxidizer) into canister.
• Quickly close the canister, set rocket upright, and take cover!
• Blast Off!!

Source: NASA

Did your rocket take flight as expected!?

• How high did your rocket fly? Advanced: Rocket Equations
• What happens if you use more/less fuel?
• What happens if you use more/less oxidizer?
• What fuel/oxidizer ratio worked the best for your specific canister?
• How did the cardboard body design affect your rocket’s flight path?

So what makes the explosion happen? It is actually the same chemistry that happens when you mix baking soda and vinegar together. An acid plus a base mix to form carbon dioxide gas, which are the bubbles you see. When enough carbon dioxide has been produced the pressure builds until the container can no longer contain it, at which point the top pops off and the gas and liquid explode out. Alka-Seltzer is made of citric acid and sodium bicarbonate (baking soda), which acts as a base. When the tablets are solid and dry the acid and base don’t react, but as soon as they are immersed in water they react to form carbon dioxide. This is what causes the explosion. Via: The Science Kiddo

See this experiment in action, courtesy of GrandadIsAnOldMan .

4. Rain Cloud in a Jar – Via: Fun Learning for Kids

Source: Fun Learning for Kids

Here’s one of the most interesting science experiments for the next generation of meteorologists!

This is one of the easiest Earth science experiments for kids which will help them visualize how clouds are formed, and how Earth’s water cycle creates rain! Making clouds in a jar is easier than you might think! This experiment is perfect for the classroom, or for learning at home!

We’ll only need a few ingredients to make awesome jar clouds:

• One large glass mason jar or plastic cup.
• Shaving cream – Foam, not gel.
• Food coloring or washable watercolors.
• Pipettes or eye droppers.
• Fill the large jar with water until it is about 3/4 full.
• Use your shaving cream to create a thick cloud layer on top of the water.
• Wait 1-3 minutes for the foam to settle.
• Drop food coloring or watercolor on top of foam.
• Observe what happens within and below your cloud!

Source: Google Galaxy Science

What did you notice after you dropped the coloring into the cloud?

• Did the cloud change colors?
• Did the colors stay suspended for a moment before dropping?
• What caused the colors to make it through the cloud?
• Did different colors have a different effect?
• What happens if you use warm vs cold water?

Clouds are formed when water vapor rises into the air. When the vapor hits cold air, it turns back into droplets of water. Those tiny drops of water floating in the air collect and “stick” together to form clouds. When clouds get so full of water that they can’t hold any more, the water falls back to the ground as rain. Via: Kidspot

See this experiment in action, courtesy of HooplaKidzLab .

5. Classic Erupting Volcano Science Project – Via: ThoughtCo.

Source: Red Tricycle

Here we have probably one of the most popular, yet controversial science experiments of the last decade!

Almost all students, at some point, have heard of science experiments involving DIY erupting volcanoes.

Given its incredible simplicity, overwhelming popularity at science fairs, and the endless potential for customization, the erupting volcano has sometimes been deemed “lazy” or “uninspired” by some teachers, as it relates to fair and/or class project submissions. However… we’re not here for a grade… we’re here to have some fun! So without further ado, we present the world-famous erupting volcano experiment!

This project has two main parts, the volcano itself and the chemicals that cause the eruption.

You will need the following:

• 6 cups flour.
• 2 cups salt.
• 4 tablespoons cooking oil.
• Warm water.
• Plastic soda bottle.
• Dish washing detergent.
• Food coloring.
• Baking dish or another pan.
• 2 tablespoons of baking soda.
• Mix 6 cups flour, 2 cups salt, 4 tablespoons cooking oil, and 2 cups of water. The resulting mixture should be smooth and firm (more water may be added if needed).
• Stand the soda bottle in the baking pan and mold your fresh dough around it, creating a volcano shape. Make sure you don’t cover the bottle’s hole or drop dough into it!
• Allow your volcano to dry and harden, then paint it as desired (optional).
• Fill the bottle most of the way with warm water and a bit of red food color.
• Add 6 drops of detergent to the bottle. (Detergent helps trap the bubbles produced by the reaction so you get better lava!)
• Add 2 tablespoons of baking soda to the liquid.
• Slowly pour vinegar into the bottle… then step back!
• Observe the eruption and record your thoughts!

What happened after you added the vinegar to the bottle?

• Was the eruption as mellow or violent as you expected?
• What happens if you use more baking soda?
• What happens if you use less warm water?
• Can you think of any way to make the eruption bigger?
• How can you make the eruption last longer?

The red lava is the result of a chemical reaction between the baking soda and vinegar. In this reaction, the carbon dioxide gas is produced, pressure builds up inside the plastic bottle until the gas bubbles out of the volcano. This is a good representation of what happens in real volcanoes. Via: Weather Wiz Kids .

See this experiment in action, courtesy of Kids Go Smart

6. Making a Sundial – Via: LASP Colorado.

Source: We Have Kids

Though we don’t see sundials used as much as other time tracking devices, understanding how they work can open a student’s perspective to a broader sense of how the Earth’s position in space, relative to the sun, creates our daily and annual cycles!

Students who follow the detailed guide provided by LASP will find themselves with a home made sundial and the opportunity to track the movement of the sun, and determine the time of local solar noon.

• 1 Wooden dowel or similar pole at least 50cm long.
• 12-24 Shadow markers (flags, rocks, sticks, nails, etc.)
• 1 Meter stick.
• Select a day that will be sunny for at least seven hours.
• Head outside to a relatively flat spot that will be out of the shadow of buildings and trees. Place the pole in the ground making certain that it is perpendicular to the ground using a plumb bob (a piece of string with a weight on it) or a level. Measure and record the height from the ground to the top of the pole.
• Put a #1 on the first object (rock, flag, etc.) you will use to mark the position of the shadows. Place the marker on the ground at the end of the shadow and to record the time from your watch.
• Measure and record the distance from the base of the gnomon to the end of the shadow in the table provided. (Optional: Also measure the angle using a compass.)
• Visit the gnomon at least once an hour for the remainder of the day. Measure the length of the shadow (and the optional angle), place a new numbered marker at the end of the shadow, and record the time of day.
• Use your notes to determine which marker is closest to the pole. This is the time of the shortest shadow and is the observation closest to solar noon. If you have the time, you can take more frequent measurements around the time of this observation on the following day to get a better estimate of solar noon.

• What is the path of the sun as it moves across the sky?
• Does the path of the sun across the sky and the pattern of the shadows from the gnomon on the dial change during the year?

See this experiment in action, courtesy of Waylight Creations!

7. Diet Coke and Mentos Eruption Experiment – Via: Science Kids

Source: Image Kid

Here we have one of the most legendary experiments of the modern day! We present to you, the Diet Coke and Mentos Experiment!

First things first, do NOT attempt this experiment indoors! This will, without a doubt, make a HUGE mess! Though simple in its form, this timeless experiment is sure to entertain young scientists of all ages. Make sure you grab some eye protection for this one! Once you’ve done the experiment with traditional Diet Coke, try repeating the steps with other beverages!

• 2-liter(s) of Diet Coca-Cola
• 2-liter(s) of other beverages (optional).
• Roll(s) of Mentos Mints.
• 1 Funnel or tube (optional).
• Set up your materials OUTSIDE. Grassy areas work best!
• Stand the 2-liter of Diet Coke upright and unscrew the lid.
• If you’ll be using a funnel or other device, attach it to the top of the Coke bottle now.
• Quickly drop 1/2 of the Mentos pack into the Coca-Cola bottle and RUN!
• Record observations.

Source: Simply Designing

• How long did it take for the geyser to begin?
• If you add more Mentos, is the eruption bigger?
• Did the type of beverage make a difference?

Although there are a few different theories around about how this experiment works, the most favoured reason is because of the combination of carbon dioxide in the Diet Coke and the little dimples found on Mentos candy pieces. The thing that makes soda drinks bubbly is the carbon dioxide that is pumped in when they bottle the drink at the factory. It doesn’t get released from the liquid until you pour it into a glass and drink it, some also gets released when you open the lid (more if you shake it up beforehand). This means that there is a whole lot of carbon dioxide gas just waiting to escape the liquid in the form of bubbles. Dropping something into the Diet Coke speeds up this process by both breaking the surface tension of the liquid and also allowing bubbles to form on the surface area of the Mentos. Mentos candy pieces are covered in tiny dimples (a bit like a golf ball), which dramatically increases the surface area and allows a huge amount of bubbles to form. The experiment works better with Diet Coke than other sodas due to its slightly different ingredients and the fact that it isn’t so sticky. I also found that Diet Coke that had been bottled more recently worked better than older bottles that might have lost some of their fizz sitting on shop shelves for too long, just check the bottle for the date. via: Science Kids !

See this experiment in action, courtesy of Olivia Rose !

8. Fizzy Lemonade Drink Experiment – Via: Amazing Girls Science

Source: Learn With Play

After trying the last 7 experiments, you might be thirsty! So, here’s an experiment you can drink when you’re finished!

In this tasty science experiment, you’ll be combining an acid with a base (just like in our awesome volcanoes)… but this will probably be a lot more refreshing than if you drank the vinegar eruption!

• Fresh Ripe Lemons!
• Drinking Water.
• Baking Soda.
• Sugar / Honey / other Sweetener.
• Squeeze as much of the juice from the lemon as you can into the glass.
• Pour in an equal amount of water as lemon juice.
• Stir in 1 teaspoon of baking soda.
• Observe and note effects.
• Give the mixture a taste and add in some sugar if you think it needs to be sweeter.
• What happened when you added the baking soda?
• What happens if you use less water in the mix?
• What ratio of the ingredients gave you the greatest reaction?
• Did the shape of the cup change anything?
• How did it taste?? Did you need any sweetener?

The mixture you created should go bubbly and taste like a lemonade, soda, fizzy or soft drink, if you added some sugar it might even taste like a lemon flavored soft drink you’ve bought at a store. The bubbles that form when you add the baking soda to the lemon mixture are carbon dioxide (CO2), these are the same bubbles you’ll find in proper fizzy drinks. Of course they add a few other flavored sweeteners but it’s not much different to what you made. If you are wondering how the carbon dioxide bubbles formed, it was because you created a chemical reaction when you added the lemon (an acid) to the baking soda (a base). via: Science Kids !

See this experiment in action, courtesy of HM 4U

9. Making Putty, Flubber, or Slime Experiment – Via: Science Kids at Home

Source: Our Best Bites

This experiment is another timeless classic! It’s gone by MANY names over the years, but our favorite is… FLUBBER!

If you’re reading this and have not seen Robin Williams in Flubber … you might not be ready for this experiment! P.S. That movie features a ton of funny science experiments!

In this gooey kids science experiment, we’ll be combing a few more household items to create something totally strange and amazing! Please note, this experiment has a few more steps and parental / teacher supervision is recommended.

Subjects: Chemistry / Polymers

• Borax (can be found with laundry detergents in most grocery stores).
• White glue.
• 2 glass jars with lids.
• Food coloring or liquid paint (optional, but totally worth it!)
• Pour 4 cups of water into a large glass jar.
• Add 1/4 cup Borax and stir until it is dissolved.
• In the 2nd jar, mix 1 cup water and 1 cup white craft glue.
• Tighten the lid and shake well until mixed.
• Add food coloring or paint to the water and glue mixture.
• Pour 1 cup of the Borax solution in a cup.
• Add 1/4 of the glue solution to this mixture.
• Use your finger or a device to give the mixture a stir.
• Observe Results.
• Remove the putty from the solution and knead it to get the finished texture.

• What happened when you combined the two solutions?
• How long did it take for the reaction to happen?
• Was your flubber sticky or smooth?
• Does it bounce like in the movie?
• Did you choose to give your flubber a color? If so, which one?

In the flubber experiment, borax starts out as a solid but creates a mixture with the glue and water. The glue is also a liquid. When they are combined, they create a colloid polymer. A colloid is a mixture where the particles are too large to dissolve but small enough to remain suspended in the liquid. A polymer is a long chain of molecules that look something like strands of cooked spaghetti. With a polymer colloid, the suspended particles are long polymer strands. If the polymer chains slide past each other easily, then the substance acts like a liquid, because the molecules flow. If the molecules hook together at a few places along the strand, then the substance behaves like a rubbery solid. Borax is responsible for hooking the glue’s polymer molecules together to form the putty-like material. When you stretch the putty, it stretches without breaking, but can be “snapped off” cleanly. It bounces higher than a rubber ball, with a rebound of 80%. If you hit it with a hammer, it keeps its shape, but pushing it with light pressure flattens it easily. If you just let the putty sit or squish it with your fingers, the molecules slide over each other and the material flows. When you drop it like a rubber ball, the impact tries to make the molecules move past each other very fast. It doesn’t work. They’re too tangled. via: Science Kids at Home !

See this experiment in action, courtesy of Whiz Kid Science

10. Light Color Heat Absorption Experiment – Via: Discovery Express Kids

Source: Raising Life-Long Learners

If you’ve ever burned your toes on blacktop/asphalt paving in the summer, but questioned why dirt or the concrete around the pool isn’t so bad… then you’re going to love science experiments like this one!

Today, we’re going to test whether or not the color of a surface ACTUALLY makes a difference in how hot things can get! This final kids science experiment is going to test the difference between the extremes of black and white; however, we recommend you repeat the process with all of your favorite colors! Pro Tip: Get a pad of various colored construction papers, all of the same thickness. You can also try a variation of this experiment using food coloring in water (as shown in the picture).

• 2 or more identical glasses or mason jars.
• Black construction paper.
• White construction paper.
• Other construction paper (optional).
• Food coloring (optional).
• Tape or rubber bands.
• Thermometer(s).
• A sunny day
• Cut black construction paper to the same height as one of the glasses.
• Wrap the black construction paper around the glass so it covers the entire outside surface.
• Tape the paper in place or put a rubber band around the glass to hold the paper in place (see image below).
• Repeat steps 2-4 with the other containers using white paper, other colored paper, or add food coloring (if desired).
• Fill all of the glasses with water. Make sure they have the same amount of water in them, and make sure you use the same temperature of water in both glasses.
• Use the thermometer to take the temperature of the water in each glass, then record this as your starting temperature.
• Use the thermometer to take each glass’s temperature every 15 minutes for two or more hours. Record the temperatures and the times for each entry.
• Take note of your observations as you go.
• When the two hours are up, you can use this data in combination with an excel spreadsheet or google doc to create a line graph that represents th temperature change in each glass. Temperature should be your Y-axis and time should be your X-axis.
• Optional bonus: Remove the glasses from sunlight and bring them inside. Record their temperature for another hour or two and observe which one COOLS the fastest!

Source: Inspiration Laboratories

• Did one color heat up more rapidly than the others?
• Did they all reach the same temperature at the end?
• Did one color release the heat / cool faster?
• How do you see this information being applied in real life? Think construction materials!

We know that sunlight includes IR and UV as well as visible light. Certain types of paint may reflect more or less IR and UV light than others. You may have heard of Light Reflectance Value (LRV), which is used to measure how much visible light a certain color reflects, but there’s also a Solar Reflectance Index (SRI) which measures how much solar heat (i.e., infrared light) a given material reflects If we look up the LRVs for the colors white and black, we find that white reflects 80% of visible sunlight, and black reflects only 5%. So we can conclude that, regardless of the color of the interior, the car with the darker paint job will have the higher temperature. via: MadSci Network: Physics !

See this experiment in action, courtesy of Curiosity Catalase

11. Floating paperclip – Via: Science Bob

Image source: Science Bob

This experiment is very simple, and yet very enjoyable to do. This will help you understand why some insects are able to walk in the water.

• Dry paper clips
• Water in a bowl
• Tissue paper
• Any pencil with an eraser
• Make sure that the bowl is filled with water.
• Tear a piece of tissue paper.
• Drop the piece of tissue on the water surface.
• Place the paper clip on the top of the tissue. Make sure that you won’t touch the water in doing so.
• Using the eraser end of the pencil, poke the tissue to make it sink. If you did it correctly, the paperclip will float.

• What did you notice when you gently put the paperclip on top of the tissue?
• Did the paperclip remained floating or did it sink along with the tissue?

The paperclip was able to float because of SURFACE TENSION. In other words, the water surface develops a skin where the water molecules hold close together. If you did it right and you followed all the steps, the water molecules can support your paperclip. This is how water striders appear like they are walking on water when in fact, they are held up by surface tension.

12. Plastic milk – Via: Science Bob

Milk isn’t just for drinking. They can also teach you about chemical reactions through some science experiments. We have included one fun project here for you to accomplish. Just make sure that you are accompanied by an adult as you do this.

• One cup of milk (any brand)
• 4 teaspoons of white vinegar
• A medium-sized bowl
• Ask an adult to heat up the milk but not up to the boiling point.
• Pour the milk into the bowl through the assistance of your adult companion.
• Mix the vinegar to the milk and stir it for one minute.
• Strain the milk so you are left with lumpy blobs.
• Collect the blobs and press them together when they already cooled down. You’ll finally have the plastic milk that you can mold.
• Were you able to get milk blobs from your experiment?
• What is the texture of the blobs?

Through combining milk and vinegar, you were able to produce a substance called CASEIN. This is plastic-like so you can mold it into any shape you want. How is this possible, you ask. The milk protein and the acid in the vinegar produce this substance when you started mixing them. It is important to note, however, that this is different from true plastics or polymers.

13. Make a snow globe – Via: Science Fun

In this experiment, we will teach you how to make a snow globe that you can add as a little accent for your home. Ask the help of an adult friend if you are having difficulties so you can add this to the list of science experiments you successfully made.

• A jar with a lid
• White glitter for the snow effect
• Small toys (animals, trees, etc)
• Glue or tape
• Glue all the little toys you found on the lid of the Jar. If you want to make a mini Christmas village, then you may do so.
• Fill half of the jar with glycerin and the other half with water. Stir afterward.
• Add some glitter to make it look like it’s snowing inside your jar. You can also add more if you want to achieve the blizzard effect.
• Put the lid on which contains the toys.
• Put some tape of glue around the lid so the glycerin and water combination won’t spill accidentally.
• Did you notice that as you shake your globe, the fluid inside does not flow like normal water?
• Did the fluid cause the snow effect?

Because you combine the water with glycerin, you were able to create your own snow globe. Glycerin has a high viscosity so it looks like the snow is slowly falling down inside the jar. Viscosity dictates how a fluid easily pours so you when you shake or turn your snow globe, the liquid slows down the glitters as gravity pulls them down. This is one of the science experiments that are fun to create and the output is also something you can use and display afterwards.

14. Expanding soap – Via: Science Fun

Some science experiments seem weird. Just like this one. We do not recommend doing this alone so you better ask the help of an adult friend. In this experiment, we will look at the possibility of expanding a little ivory soap. Read on to learn more.

• Large microwave
• Place the ivory soap inside the bowl.
• Put it inside the microwave for two minutes.
• Notice how it grows! Take a video if you like.
• Wait several minutes before taking it out from the microwave so it can cool down.
• How big did the soap grow in the span of two minutes?
• What is the texture of the soap after getting it out from the microwave?

Because the ivory soap has a lot of air bubbles in it, there is a high possibility that it will grow once it is heated for several minutes. The air bubbles expanded when it was put inside a microwave, resulting in a massive soap. Since soaps are solids, it will remain expanded even when it cooled down. You can still use the soap you experimented it by cutting it into smaller pieces.

15. Dancing raisins – Via: Coffe Cups and Crayons

This is probably considered one of the top easy science experiments out there. You will be able to do this in three simple steps without needing the supervision of an adult. If you would love to see how air bubbles work in lifting objects in the water, then you will enjoy this.

• Clear sodas
• Fill the three glasses with different kinds of sodas and the other one with water. Make sure to use sodas that weren’t refrigerated.
• Put the raisins into the soda and watch them dance!
• Put raisins on the water and compare its movement to the raisins you put into the soda.
• Did the raisins sink when you put them in the soda?
• Did they float after some time?
• What was the movement of the raisins you put in the soda as compared to the ones that you dropped in the glass with water?

Since the raisins are denser than the soda, it initially sunk to the bottom. However, because air bubbles formed outside the raisins, they started to float all the way to the top. They fall back down once all the bubbles already popped. This makes them appear as if they were dancing. There are a lot of science experiments similar to this one that will show you how objects dance when put in soda.

As you can see, there is a TON of safe, fun, and easy science experiments you can do at home or in the classroom! There are also some educational apps for kids that will teach you these. Which ones of these top 15 did you try yourself? Are there any others you’d recommend to the Student-Tutor community? Post them below!

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10 Science Experiments Every Child Should Try At Least Once

March 14, 2020 By Emma Vanstone 2 Comments

Do you remember summer holidays spent making baking soda volcanoes, flower petal perfume and homemade ice cream? If not, do you wish you did? This collection of 10 science experiments every child should try at least once would be great fun to work through over a school holiday or when you’re stuck inside on a rainy day. It’s not the most original of lists, most of the experiments are pretty obvious and standard, but they are the ones that stand the test of time. I did most of them with my brother in our garden when we were kids and then with my own children many years later too!

First download the Top 10 Science Experiments for Kids Checklist and tick off each experiment as you complete it!

If you’ve already tried all these, why not work your way around our Periodic Table of Experiments , that will definitely keep you busy for weeks!

Top 10 Science Experiments for Kids

Baking soda volcano.

A baking soda volcano has to be the most popular science experiment out there and definitely a must do experiment for every child. My favourite way to do this one is to wait for a snowy day and make a snow volcano. All the mess is outside and the red lava looks great against white snow.

If you’re looking for something to keep the kids busy for a few days a papier mache volcano is a great science project for do over a period of time.

The volcano in the image below is made from sand. We split the jar inside in half with a sheet of cardboard, before adding red food colouring to one side and yellow to the other for a multicoloured volcanic explosion .

Coke and Mento Eruption

Drop mentos into a bottle of coke and watch as a coke and mento geyser shoots into the air! Children can design and build a device to drop the mentos into the coke as fast as possible or experiment with different types of fizzy drinks to extend the activity.

In at number 3 of our top 10 science experiments for kids is another science staple, lava lamps are brilliant fun with the added advantage that they can be used over and over again!

Giant Sweets

So far I haven’t met a child who hasn’t enjoyed watching a small sweet triple in size almost as they watch!

All you need to do is place a small gummy sweet ( Haribo are perfect ) in water and leave it for a couple of hours.

Bottle Rockets shoot up into the air and fly a long way but need a bit of prep. Film canister rockets are quick and easy, or if you fancy something almost mess free straw rockets are great fun too.

Watching colours shoot over the surface of milk is always great fun. The Magic Milk experiment is over quite quickly, but totally worth the effort for the wow factor.

Skittles Experiment

If you haven’t tried this one you’re really missing out! Simply put skittles on a white plate and pour water over the top. The water can be hot, warm or cold ( some ideas for how to make it an investigation there ). The end result is always impressive no matter how many times you try it.

Rainbow Bubbles

Bubbles are great fun for kids of all ages and spotting a rainbow in a bubble is super exciting for little ones. Older kids can experiment with creating their own bubble solution and making giant bubbles !

Ice Cream in a Bag

This is another very traditional science experiment. Use the cooling power of ice and salt to make homemade ice cream.

Finally last but definitely not least in our list of science experiments every child should try at least once are these very cool catapults made with lolly sticks or craft sticks, elastic bands and a milk jug lid. They are great fun, easy enough for little children to use and older children can tweak or improve the design.

How many have you tried? Will you attempt all our top 10 Science Experiments ?

Click on the image to download our Top 10 Science Experiments for Kids Checklist.

More Must Try Science Experiments

We haven’t tried Elephants Toothpaste , but it’s another famous science experiment and pretty explosive.

I’m also a big fan of the candy house which always keeps my kids happy and busy for hours.

What would be on your top 10 list of science experiments for kids ?

Last Updated on March 30, 2022 by Emma Vanstone

Safety Notice

Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

Reader Interactions

April 27, 2020 at 9:42 pm

My kids and I did the skittles experiment, and my five-year-old wanted to tell you how much she likes the way the colors spread out. We had a lot of fun. Thank you for suggesting these 10 experiments!

May 12, 2021 at 11:53 am

Science experiments like these are perfect for enhancing a child’s curiosity level. It will spark their enthusiasm towards learning more!

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fun & meaningful learning every day

You Need to Try These Top 10 Summer Science Experiments

Shared by Mary Catherine 6 Comments

I have a secret to share with you. We love science. Okay, so that’s not really a big secret given how many hands-on science activities we’ve jumped into over the years. If you’re science lovers like we are, you’ve got to check out these awesome summer science experiments . More than 50 to choose from, so picking which one to start with may prove difficult.

Related: Camping Science Activities for Preschoolers

Table of Contents

Summer Science Experiments to Try With the Kids

Let me begin by saying it was TOUGH to narrow this list down to 10!  What I share on Fun-A-Day is about a tenth of the science fun we actually try out, too!  With that being said, here are our top 10 science experiments for kids to try out this summer.  My son helped me decide on the list, so it’s officially “kid-approved”!

Related: Summer Crafts for Preschoolers

COLD CHEMICAL REACTIONS

Let the kids explore chilly science experiments on a warm summer day. A fun way to cool down and learn about science while playing!  Here are a few ideas to get you started:

• Icy, Fizzing Letters from Fun-A-Day!
• Save Han Solo from Frozen Carbonite from Fun-A-Day!
• Frozen Fairy Tale Science from Fun-A-Day!
• Frozen Fizzing Stars   from Little Bins for Little Hands
• Ice Volcanoes from Reading Confetti
• Exploding Treasure Chests from Fun-A-Day!

SANDY SUMMER SCIENCE EXPERIMENTS

The beach is synonymous with summer for me, so let the kiddos add some sand to their science (or some science to their sand)!  Some suggestions:

• At-Home Sand Volcanoes from Fun-A-Day!
• Sand Volcanoes from One Perfect Day
• Homemade Quicksand from Growing a Jeweled Rose
• Sand Tracks: Learning with Trains at the Beach from Play Trains!
• How to Make a Rock from Fantastic Fun and Learning

WEATHER EXPERIMENTS

Learning about the seasons is an important lesson for young children.  Introduce a few summer weather experiments to the kids in playful ways.  Here are some we are going to try this summer:

• Cloud Jars  from Learn with Play at Home
• How to Make Lightening from Learn. Play. Imagine.
• How to Make Fog in a Bottle from What Do We Do All Day
• Rain Experiments for Kids: Floating Object s from A Mom with a Lesson Plan
• Make a Hurricane from Inspiration Laboratories

BUBBLE CONCOCTIONS

What would summer be without bubbles?!?!  Not nearly as fun, that’s what.  Encourage the kids to test out different bubble solutions and bubble wands.  Keep track of their findings in a summer science journal, then compare!  What did the children observe, and what bubble solutions were their favorites?  A few bubble ideas for you:

• Dry Ice Bubbles from Not Just Cute
• Homemade Tear-Free Bubble Recipe from Craftulate
• Making Colored Bubbles from Learn.Play.Imagine
• How to Make Your Own Giant Bubbles from Happy Hooligans
• Easy Homemade Bubbles  from Coffee Cups and Crayons

WATER PLAY SCIENCE

Let the little scientists explore water’s properties in various ways this summer.  Here are some of our favorites:

• Create a Portable Kids’ Water Wall from Fun-A-Day!
• Musical Science Pool from And Next Comes L
• PVC Pipe Physics in the Water Table from Fun-A-Day!
• Kid Experiment: How Much Water Does it Hold from Hands-On: As We Grow
• Water Pump Sprinkler from Teach Beside Me

NATURAL SCIENCE

Science is about observing, questioning, and investigating the world around us.  What better way to do that than outside in nature?  Which of these will you try first?

• Coloring Wild Carrot from Fireflies and Mud Pies
• DIY Giant Worm Observation Tower from Twodaloo
• Beach in a Bottle from House of Burke
• Tadpole and Frog Investigation Area from The Imagination Tree
• Ocean Nature Table from Natural Beach Living

HOMEMADE CHALK TESTS

Kiddos love getting outside and creating with chalk.  Why not lead them through a science-based exploration of which chalk recipes they like the best?  They can write or draw their observations in a summer science journal, then compare and contrast their findings.  Which recipes were their favorites?

• Ice Chalk from Reading Confetti
• 3 Ingredient Sidewalk Chalk Paint from Simple Play Ideas
• Homemade Glitter Chalk Paint from Still Playing School
• Frozen Scented Sidewalk Chalk from Mama.Papa.Bubba
• How to Make Glow in the Dark Sidewalk Chalk from Coffee Cups and Crayons

MELTING ICE SCIENCE

Set up science experiments for kids to explore melting ice.  It will cool them down on hot summer days, as well as teach them how ice turns back into water.  Here you go:

• Make and Melt Ice Castles from Fun-A-Day!
• Glowing Ice Excavation from Fun at Home with Kids
• Colored Ice Play from Fun-A-Day!
• Name Ice Melting from Fun-A-Day!
• Lego Excavation Experiment from Lemon Lime Adventures
• Simple and Playful Ice Experiments from Nothing if Not Intentional

FLOAT AND SINK SUMMER SCIENCE EXPERIMENTS

This oldie-but-a-goodie science experiment allows children to explore how objects interact with water.  It’s fun, but it also touches on the concept of density.  Some variations on that theme:

• The Floating Stone Experimen t from Blog Me Mom
• The Floating Egg   from Tinkerlab
• An Exploration with Nature from Teach Preschool
• Sink or Float: An Experiment with Seltzer Water from Kids Activities Blog
• Sink or Float (with free printable)   from Buggy and Buddy

MESSY SCIENCE

Get messy outside in the name of science!  Why not let the kiddos bring out their inner mad scientists in the summer weather?  It’s a lot easier to clean up the mess outdoors!  See how their favorite play recipes’ ingredients work together to make new substances.  A few ideas for messy science:

• Taste-Safe Coconut Cloud Dough  from Fun-A-Day!
• Messy Play with Shaving Cream, Cornstarch, and Water from Fun-A-Day!
• Watermelon Volcano  from Twodaloo
• Frozen Summer Fun with Lemon Oobleck from Learn.Play.Imagine
• Exploding Milk Experiment from Mess for Less

What summer science experiments for kids would you add to the list?

Be sure to check out all of the other awesome summer learning ideas !

Summer Science Materials

I often find that science is one of the students’ favorite subjects to study in preschool. And I think it’s really important to foster that interest by giving the students plenty of opportunities to study and explore science concepts.

And as such, it will be helpful to keep some science-related product on-hand in your classroom this summer. Check out this list for some science product suggestions (I may get commissions for purchases made through links in this post):

• Kinetic sand
• Ice cube trays
• Popsicle molds
• Measuring cups
• Plastic bottles (purchased or recycled)
• Plastic bins
• Liquid watercolors
• Food coloring

This list is, in no way, all-inclusive. There are a ton of every day items that can be used for preschool science. Look around your classroom or home to get some ideas. Regardless of which materials you choose, I know your students will have a blast getting to experience the hands-on fun that comes with science!

Done-for-You Preschool Resources

Planning meaningful lessons for students week after week, all while balancing other teaching responsibilities and a personal life, can be a daunting task. That’s where  Preschool Teacher 101  comes in to save you time!

Preschool Teacher 101 is excited to share with you some amazing lesson plans, activity packs, and much more! We offer a wide variety of themes that are frequently used in preschool classrooms, as well as some less common (but super interesting) themes. Click on the images below to learn more about some of our favorite product offerings!

Join  The Pack from Preschool Teacher 101  today for exclusive access to our amazing products. And we even have three different membership options to suit your needs!

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June 19, 2014 at 4:38 am

Wow, what an amazing list! This will be so helpful for keeping my kiddo busy this summer. Thanks for featuring our Sand Tracks…those were so fun!

June 22, 2014 at 1:12 pm

What an amazing round-up of summer science ideas! Summer seems to offer so many opportunities to explore with science!

September 8, 2014 at 8:30 am

I would love to have your Block Structure Book. I just signed up, but I don’t know how to get it. Could you please help me if you are sharing your wonderful piece of work. 🙂

June 19, 2015 at 10:35 pm

Wow! This is a great list and covers so many content areas! When science is fun learning happens.

November 16, 2015 at 1:46 am

I am definitely gonna try these activity with my kids this summer. These activities at home helps kids to perform better in their school activity projects. Thanks for the post.

June 26, 2017 at 6:02 pm

This is a FABULOUS post! 🙂 Thanks so much for including my post!

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Fun by categories.

Summer holiday science: turn your home into a lab with these three easy experiments

Associate Professor in Biology, University of Limerick

Disclosure statement

Audrey O'Grady receives funding from Science Foundation Ireland. She is affiliated with Department of Biological Sciences, University of Limerick.

University of Limerick provides funding as a member of The Conversation UK.

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Many people think science is difficult and needs special equipment, but that’s not true.

Science can be explored at home using everyday materials. Everyone, especially children, naturally ask questions about the world around them, and science offers a structured way to find answers.

Misconceptions about the difficulty of science often stem from a lack of exposure to its fun and engaging side. Science can be as simple as observing nature, mixing ingredients or exploring the properties of objects. It’s not just for experts in white coats, but for everyone.

Don’t take my word for it. Below are three experiments that can be done at home with children who are primary school age and older.

Extract DNA from bananas

DNA is all the genetic information inside cells. Every living thing has DNA, including bananas.

Did you know you can extract DNA from banana cells?

What you need: ¼ ripe banana, Ziploc bag, salt, water, washing-up liquid, rubbing alcohol (from a pharmacy), coffee filter paper, stirrer.

What you do:

Place a pinch of salt into about 20ml of water in a cup.

Add the salty water to the Ziploc bag with a quarter of a banana and mash the banana up with the salty water inside the bag, using your hands. Mashing the banana separates out the banana cells. The salty water helps clump the DNA together.

Once the banana is mashed up well, pour the banana and salty water into a coffee filter (you can lay the filter in the cup you used to make the salty water). Filtering removes the big clumps of banana cells.

Once a few ml have filtered out, add a drop of washing-up liquid and swirl gently. Washing-up liquid breaks down the fats in the cell membranes which makes the DNA separate from the other parts of the cell.

Slowly add some rubbing alcohol (about 10ml) to the filtered solution. DNA is insoluble in alcohol, therefore the DNA will clump together away from the alcohol and float, making it easy to see.

DNA will start to precipitate out looking slightly cloudy and stringy. What you’re seeing is thousands of DNA strands – the strands are too small to be seen even with a normal microscope. Scientists use powerful equipment to see individual strands.

Learn how plants ‘drink’ water

What you need: celery stalks (with their leaves), glass or clear cup, water, food dye, camera.

• Fill the glass ¾ full with water and add 10 drops of food dye.
• Place a celery stalk into the glass of coloured water. Take a photograph of the celery.
• For two to three days, photograph the celery at the same time every day. Make sure you take a photograph at the very start of the experiment.

What happens and why?

All plants, such as celery, have vertical tubes that act like a transport system. These narrow tubes draw up water using a phenomenon known as capillarity.

Imagine you have a thin straw and you dip it into a glass of water. Have you ever noticed how the water climbs up the straw a little bit, even though you didn’t suck on it? This is because of capillarity.

In plants, capillarity helps move water from the roots to the leaves. Plants have tiny tubes inside them, like thin straws, called capillaries. The water sticks to the sides of these tubes and climbs up. In your experiment, you will see the food dye in the water make its way to the leaves.

Build a balloon-powered racecar

What you need: tape, scissors, two skewers, cardboard, four bottle caps, one straw, one balloon.

• Cut the cardboard to about 10cm long and 5cm wide. This will form the base of your car.
• Make holes in the centre of four bottle caps. These are your wheels.
• To make the axles insert the wooden skewers through the holes in the cap. You will need to cut the skewers to fit the width of the cardboard base, but leave room for the wheels.
• Secure the wheels to the skewers with tape.
• Attach the axles to the underside of the car base with tape, ensuring the wheels can spin freely.
• Insert a straw into the opening of a balloon and secure it with tape, ensuring there are no air leaks.
• Attach the other end of the straw to the top of the car base, positioning it so the balloon can inflate and deflate towards the back of the car. Secure the straw with tape.
• Inflate the balloon through the straw, pinch the straw to hold the air, place the car on a flat surface, then release the straw.

The inflated balloon stores potential energy when blown up. When the air is released, Newton’s third law of motion kicks into gear: for every action, there is an equal and opposite reaction.

As the air rushes out of the balloon (action), it pushes the car in the opposite direction (reaction). The escaping air propels the car forward, making it move across the surface.

• Science experiments

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Five of the most important International Space Station experiments

From artificial retinas to ageing mice, here are five of the most promising results from research performed on the ISS – and what they might mean for humans on Earth and in space

By Jon Cartwright

6 August 2024

It’s not all eating bits of food floating in mid-air and introducing suction toilets to fascinated Earthlings – crews on the International Space Station (ISS), which will be coming to an end soon , have serious work to do.

Since the station’s inception, astronauts and cosmonauts have performed more than 3000 experiments in the microgravity and heightened radiation of low-Earth orbit. These have ranged from confirming that fertility levels remain unaltered (in mice, not crew members) to testing the prospects of using lunar soil to make concrete to help build future moon bases. Here are four more of the most impressive bits of ISS research.

Artificial retinas

For millions of people with degenerative conditions affecting the retina – the layer of light-sensitive cells at the back of the eye – there is no cure, only treatments that slow progression. However, an implant that mimics the function of the retina might be the solution, and US-based company LambdaVision has had some success making one by depositing layer upon layer of a light-activated protein known as bacteriorhodopsin. On Earth, solutions of it tended to clump together, leading to poor deposition, but much better results came early this decade in the microgravity aboard the ISS . LambdaVision is now trying to scale up space manufacturing of the artificial retinas and claims these are among the first technologies evaluated on the ISS that have the potential for clinical use.

Astronauts could drink their own urine with water-recycling spacesuit

Invisible flames

When you light a match, the wood burns, reacting with oxygen to produce heat and light, as well as some other products such as carbon…

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Bizarre theory emerges about why Raygun scored a zero at the Olympic Games

Raygun's viral olympics performance received a score of zero from the judges.

Raygun's zero-point performance at the Paris Olympics was without a doubt the highlight of the Games for many - and it's spawned a baffling fan theory.

Australian breakdancer Rachael Gunn, 36, who is a university lecturer by day, broke the internet after she scored zero in all three rounds of heats on Friday (9 August).

Her unique routine consisted of mimicking a kangaroo, writhing on the floor like a snake, and, well, some unexplainable moments.

Despite scoring no points at the Paris Olympics , the dancer remained upbeat after the competition, saying: "All my moves are original. Creativity is really important to me. I go out there and I show my artistry.

"Sometimes it speaks to the judges and sometimes it doesn’t.

"I do my thing, and it represents art. That is what it is about."

As expected, Raygun's performance has sparked a lot of reaction on social media, including a bizarre fan-theory.

Taking to X , one person thought: "Did we pay for Raygun to go to Paris and perform some odd social experiment?"

Another added: "Was Raygun a joke of some sort? Like was this a social experiment for her PhD? Is her name even Raygun???"

"Raygun has got to be a social experiment," a third person agreed.

"I will literally die if Raygun says this was a social experiment," someone else said.

Meanwhile, one of the judges who gave Gunn a zero, said he was a fan of her 'originality'.

Martin Gilian, who goes by 'MGbility', said in a press conference: "Breaking is all about originality and bringing something new to the table and representing your country or region.

"This is exactly what Raygun was doing. She got inspired by her surroundings, which in this case, for example, was a kangaroo.

"We have five criteria in the competitive judging system and just her level was maybe not as high as the other competitors.

"But again, that doesn't mean that she did really bad. She did her best. She won the Oceania qualifier. Unfortunately for her, the other B-girls were better."

Although we won't be getting breakdancing at the 2028 Games in LA, there are hopes that the category will be included in 2032.

"Our campaign to be added to Brisbane 2032 has already begun and is being ably led by our first vice-president and resident Australian Tony Tilenni," WDSF President Shawn Tay said in a statement.

"Initial reactions from all participants to the breaking presentations, including Brisbane officials at the Australian Olympic Committee’s one year to go to Paris 2024 celebrations, have been highly optimistic about our chances of being added to these Games."

In response, Rachael Gunn's representatives told LADbible: "The taxpayer does not fund the Australian Olympic Team’s campaign – costs are met entirely by the Australian Olympic Committee – which itself receives no Federal funding.

"Rachael Gunn qualified for the Olympic Games by winning the Oceania Qualifying event held in Sydney last year. She receives no Federal funding for her sporting career."

Top 10 performing Olympic nations

• USA - 126 medals (40 gold)
• China - 91 medals (40 gold)
• Japan - 45 medals (20 gold)
• Australia - 53 medals (18 gold)
• France - 64 medals (16 gold)
• Netherlands - 34 medals (15 gold)
• Great Britain - 65 medals (14 gold)
• South Korea - 32 medals (13 gold)
• Italy - 40 medals (12 gold)
• Germany - 33 medals (12 gold)

Topics:  Sport , Olympics

Anish is a GG2 Young Journalist of the Year 2024 finalist. He has a Master's degree in Multimedia Journalism and a Bachelor's degree in International Business Management. Apart from that, his life revolves around the ‘Four F’s’ - family, friends, football and food. Email: [email protected]

@ Anish_Vij

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• Cash bonuses and bizarre rewards Olympic athletes receive for winning medals at the Games
• Injury update on Olympic diver who scored zero after colliding with board on way down

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NIRF Ranking 2024: IIT Madras tops for the sixth time. Check category-wise list

The nirf rankings 2024 was released on monday and iit madras became the top institute this year overall once again. check out the top 10 institutes in india overall as well as the top five from every category..

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• NIRF 2024 rankings releases, 10,885 institutes participate
• IIT Madras retains top spot, IISc Bangalore leads universities
• NIRF 2024 adds three new categories, sustainability ranking set for next year

The National Institutional Ranking Framework (NIRF) Rankings 2024 were released today and can be accessed on the official website of NIRF at nirfindia.org.

A total of 10,885 institutes participated in the ninth edition of the NIRF Ranking Framework, a 200% increase since the first edition in 2016.

This is the sixth year that IIT Madras has maintained its top position in both the 'Overall' and 'Engineering' categories in the NIRF Rankings. It has been ranked first in the engineering category every year since the inception of the rankings in 2016, i.e. for nine years.

Similarly, AIIMS Delhi has clinched the top position in the Medical category for seven years straight and IIM Ahmedabad has consistently held the top rank in the Management category for five years consecutively.

Also, maintaining the order of the previous year, the Indian Institute of Science (IISc) in Bengaluru has once again secured the top position among universities in the NIRF rankings 2024, while JNU and Jamia Millia Islamia follow in the second and third spots.

NIRF RANKING CATEGORIES AND CHANGES

The latest NIRF rankings include three new categories: Open Univeristies, Skill Universities, State Public Universities (state-funded government universities). Last year, the categories only comprised: Overall, Colleges, Universities, and Research Institutions.

The subject domains now consist of Engineering, Management, Pharmacy, Law, Medical, Architecture and Planning, Dental, and Agriculture and Allied Sectors.

Two criteria changes were also implemented this year – for medical colleges, the faculty vs student ratio was changed from 1:15 to 1:10, and for state-funded government institutes, it was changed from 1:20 to 1:15.

"Considering the rising importance of carbon neutrality and sustainability, a Sustainability Ranking will also be launched next year," said Anil Sahasrabuddhe, Chairman of NBA (National Board of Accreditation) which prepares the NIRF.

NIRF RANKING 2024: TOP 10 INSTITUTES IN ‘OVERALL’ CATEGORY

Rank 1: Indian Institute of Technology (IIT) Madras Location: Chennai, Tamil Nadu

Rank 2: Indian Institute of Science (IISc) Bengaluru Location: Bengaluru, Karnataka

Rank 3: Indian Institute of Technology (IIT) Bombay Location: Mumbai, Maharashtra

Rank 4: Indian Institute of Technology (IIT) Delhi Location: New Delhi, Delhi

Rank 5: Indian Institute of Technology (IIT) Kanpur Location: Kanpur, Uttar Pradesh

Rank 6: Indian Institute of Technology (IIT) Kharagpur Location: Kharagpur, West Bengal

Rank 7: All India Institute of Medical Sciences (AIIMS) Location: New Delhi, Delhi

Rank 8: Indian Institute of Technology (IIT) Roorkee Location: Roorkee, Uttarakhand

Rank 8: Indian Institute of Technology (IIT) Guwahati Location: Guwahati, Assam

NIRF RANKINGS: TOP 5 ‘UNIVERSITIES’ IN INDIA

Rank 1: Indian Institute of Science (IISc) Bengaluru Location: Bengaluru, Karnataka

Rank 2: Jawaharlal Nehru University (JNU) Location: New Delhi, Delhi

Rank 3: Jamia Millia Islamia (JMI) Location: New Delhi, Delhi

Rank 4: Manipal Academy of Higher Education (MAHE) Location: Manipal, Karnataka

NIRF RANKING 2024: TOP 10 ‘ENGINEERING’ INSTITUTES IN INDIA

Rank 2: Indian Institute of Technology (IIT) Delhi Location: New Delhi, Delhi

Rank 4: Indian Institute of Technology (IIT) Kanpur Location: Kanpur, Uttar Pradesh

Rank 5: Indian Institute of Technology (IIT) Kharagpur Location: Kharagpur, West Bengal

Rank 6: Indian Institute of Technology (IIT) Roorkee Location: Roorkee, Uttarakhand

Rank 7: Indian Institute of Technology (IIT) Guwahati Location: Guwahati, Assam

Rank 8: Indian Institute of Technology (IIT) Hyderabad Location: Hyderabad, Telangana

Rank 9: National Institute of Technology (NIT) Tiruchirappalli Location: Tiruchirappalli, Tamil Nadu

NIRF RANKINGS: TOP 10 ‘MANAGEMENT’ INSTITUTES IN INDIA

Rank 1: Indian Institute of Management Ahmedabad Location: Ahmedabad, Gujarat

Rank 2: Indian Institute of Management Bangalore Location: Bangalore, Karnataka

Rank 3: Indian Institute of Management Kozhikode Location: Kozhikode, Kerala

Rank 4: Indian Institute of Technology Delhi Location: New Delhi, Delhi

Rank 5: Indian Institute of Management Calcutta Location: Kolkata, West Bengal

Rank 6: Indian Institute of Management Mumbai Location: Mumbai, Maharashtra

Rank 7: Indian Institute of Management Lucknow Location: Lucknow, Uttar Pradesh

Rank 8: Indian Institute of Management Indore Location: Indore, Madhya Pradesh

Rank 9: XLRI - Xavier School of Management Location: Jamshedpur, Jharkhand

NIRF RANKING 2024 TOP 10 ‘PHARMACY’ INSTITUTES IN INDIA

Rank 1: Jamia Hamdard Location: New Delhi, Delhi

Rank 2: National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad Location: Hyderabad, Telangana

Rank 3: Birla Institute of Technology and Science (BITS) Pilani Location: Pilani, Rajasthan

Rank 4: JSS College of Pharmacy - Ooty Location: Ooty, Tamil Nadu

Rank 5: Institute of Chemical Technology Location: Mumbai, Maharashtra

Rank 6: JSS College of Pharmacy - Mysuru Location: Mysuru, Karnataka

Rank 7: National Institute of Pharmaceutical Education and Research (NIPER) Mohali Location: Mohali, Punjab

Rank 8: Panjab University Location: Chandigarh, Punjab

Rank 9: Manipal College of Pharmaceutical Sciences Location: Manipal, Karnataka

NIRF RANKINGS: TOP 10 ‘COLLEGES’ IN INDIA

Rank 1: Hindu College Location: New Delhi, Delhi

Rank 2: Miranda House Location: New Delhi, Delhi

Rank 3: St. Stephen's College Location: New Delhi, Delhi

Rank 3 (Joint): Rama Krishna Mission Vivekananda Centenary College Location: Kolkata, West Bengal

Rank 5: Atma Ram Sanatan Dharma College Location: New Delhi, Delhi

Rank 6: St. Xavier’s College Location: Kolkata, West Bengal

Rank 7: PSGR Krishnammal College for Women Location: Coimbatore, Tamil Nadu

Rank 8: Loyola College Location: Chennai, Tamil Nadu

Rank 9: Kirori Mal College Location: New Delhi, Delhi

NIRF RANKING 2024: TOP 5 ‘MEDICAL’ COLLEGES IN INDIA

Rank 1: All India Institute of Medical Sciences (AIIMS) Location: New Delhi, Delhi

Rank 2: Post Graduate Institute of Medical Education and Research (PGIMER) Location: Chandigarh, Chandigarh

Rank 3: Christian Medical College (CMC) Location: Vellore, Tamil Nadu

Rank 4: National Institute of Mental Health and Neuro Sciences (NIMHANS) Location: Bengaluru, Karnataka

NIRF RANKING 2024: TOP 5 ‘RESEARCH INSTITUTIONS' IN INDIA

Rank 2: Indian Institute of Technology (IIT) Madras Location: Chennai, Tamil Nadu

Rank 3: Indian Institute of Technology (IIT) Delhi Location: New Delhi, Delhi

Rank 4: Indian Institute of Technology (IIT) Bombay Location: Mumbai, Maharashtra

NIRF RANKING 2024: TOP 10 ‘INNOVATION’ INSTITUTES IN INDIA

Rank 1: Indian Institute of Technology (IIT) Bombay Location: Mumbai, Maharashtra

Rank 3: Indian Institute of Technology (IIT) Hyderabad Location: Hyderabad, Telangana

Rank 4: Indian Institute of Science (IISc) Bengaluru Location: Bengaluru, Karnataka

Rank 7: Indian Institute of Technology (IIT) Delhi Location: New Delhi, Delhi

Rank 8: Indian Institute of Technology (IIT) Mandi Location: Mandi, Himachal Pradesh

Rank 9: Indian Institute of Technology (IIT) Kharagpur Location: Kharagpur, West Bengal

NIRF RANKING: TOP 5 ‘LAW’ COLLEGES IN INDIA

Rank 1: National Law School of India University Location: Bengaluru, Karnataka

Rank 2: National Law University (NLU) Location: New Delhi, Delhi

Rank 3: Nalsar University of Law Location: Hyderabad, Telangana

Rank 4: The West Bengal National University of Juridical Sciences Location: Kolkata, West Bengal

NIRF RANKING 2024: TOP 5 ‘ARCHITECTURE’ INSTITUTES IN INDIA

Rank 1: Indian Institute of Technology (IIT) Roorkee Location: Roorkee, Uttarakhand

Rank 2: Indian Institute of Technology (IIT) Kharagpur Location: Kharagpur, West Bengal

Rank 3: National Institute of Technology (NIT) Calicut Location: Kozhikode, Kerala

Rank 4: Indian Institute of Engineering Science and Technology Location: Shibpur, West Bengal

NIRF RANKINGS: TOP 5 ‘DENTAL’ INSTITUTES IN INDIA

Rank 1: Saveetha Institute of Medical and Technical Sciences Location: Chennai, Tamil Nadu

Rank 2: Manipal College of Dental Sciences Location: Udupi, Karnataka

Rank 3: Maulana Azad Institute of Dental Sciences Location: New Delhi, Delhi

Rank 4: King George's Medical University Location: Lucknow, Uttar Pradesh

NIRF RANKING 2024: TOP 5 ‘AGRICULTURE AND ALLIED’ INSTITUTES IN INDIA

Rank 1: Indian Agricultural Research Institute Location: New Delhi, Delhi

Rank 2: ICAR - National Dairy Research Institute Location: Karnal, Haryana

Rank 3: Punjab Agricultural University Location: Ludhiana, Punjab

Rank 4: Banaras Hindu University Location: Varanasi, Uttar Pradesh

NIRF RANKING 2024: TOP 3 'OPEN UNIVERSITIES' IN INDIA

Rank 1: Indira Gandhi National Open University (IGNOU) Location: New Delhi, Delhi

Rank 2: Netaji Subhas Open University Location: Kolkata, West Bengal

NIRF RANKINGS: TOP 3 'SKILL UNIVERSITIES' IN INDIA

Rank 1: Symbiosis Skills and Professional University Location: Pune, Maharashtra

Rank 2: Shri Vishwakarma Skill University Location: Palwal, Haryana