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40 Simple Water Science Experiments for Kids

April 16, 2018 by Selena Robinson Leave a Comment

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Add some easy science fun to your learning day with these simple water science experiments for kids!

Warmer weather means lots of water play and, for us, that means plenty of  simple water science experiments to try with the kids!

Since we’ve been homeschooling, I’ve learned that science doesn’t have to be a complicated subject to teach.

Many scientific concepts sound complicated (and really are amazingly intricate), but showing kids how they work doesn’t have to be complex.

Fun and Simple Water Science Experiments for Kids to Try

Turns out that you can use a few household supplies and demonstrate how scientific principles work in a kid-friendly way!

And that’s why I’ve rounded up 40 easy water science experiments that would be great to share with kids – either indoors or outdoors!

Don’t miss our list of science experiments that you can do in just 15 minutes too!

These simple water science experiments for kids are easy to set up and fun for learning about science!

1. Simple Light In Water Refraction Experiment – Look! We’re Learning!

2. Milk Jug Water Wheel Experiment – J Daniel 4’s Mom

3. Float Vs Sink Experiment – Teach Me Mommy

4. Leak-Proof Bag Science Experiment – Fun Learning for Kids

5. How to Make a Lava Lamp – Coffee Cups and Crayons

6. Measuring Water Beads – Blue Bear Wood

7. Water Balloon Parachute – Fantastic Fun and Learning

8. Food Coloring Fluid Mechanics Experiment – Mama Smiles

9. Measuring Buoyancy Experiment – KC Edventures

10. Color Mixing Experiment – Science Sparks

11. Tide Pool Science Experiment – Buggy and Buddy

12. Floating Peep Boats – Sixth Bloom

13. Traveling Water Experiment – The Wise Owl Factory

14. Simple Water Displacement Experiment – Life with Moore Babies

15. Ripple Water Experiment – J Daniel 4’s Mom

16. Why Does Water Rise STEM Experiment – STEAM Powered Family

17. Make a Rain Cloud In a Jar – Coffee Cups and Crayons

18. Water Xylophone Sound Experiment – Little Bins for Little Hands

19. Growing Mint in Water – Sloely

20. Sticky Ice Experiment – Capri Plus 3

simple science experiments with water

See more of these awesome simple water science experiments on page 2!

simple science experiments with water

21 Easy Preschool Water Experiments

I can’t get my preschooler out of the water so this is a great age to introduce a few quick water activities into our play. Kids can learn and play at the same time when you know how to choose the right preschool science activities ! Water is the key ingredient in all of these awesome water experiments below. Easy preschool water activities you will love that include a bit of science!

Quick water science experiments and activities kids will love. Preschool science, kindergarten science, and early elementary ages science activities using water and other common supplies. Free or nearly free science for kids is a budget friendly way to try science at home or in the classroom. We love simple science experiments and STEM activities and using water makes science extra fun and playful for kids

Enjoy Water Science With Preschoolers

Preschoolers are curious creatures and science experiments, even very simple experiments can fuel their curiosity. Learning how to observe, predict what might happen, and discuss what is happening are amazing tools for the future!

Science surrounds us, inside and out. Kids love checking things out with magnifying glasses, creating chemical reactions with kitchen ingredients, and of course exploring stored energy! Check out these 35 awesome preschool science experiments to get started.

There lots of easy science concepts that you can introduce kids to very early on, including water play!

You might not even think about science when your toddler pushes a card down a ramp, plays in front of the mirror, laughs at your shadow puppets, or bounces balls over and over again. See where I am going with this list? What else can you add if you stop to think about it?

Science starts early, and you can be a part of that with setting up science at home with everyday materials. Or you can bring easy science to a group of kids! We find a ton of value in cheap science activities and experiments.

Helpful Science Resources To Get You Started

Here are a few resources that will help you introduce science more effectively to your kiddos or students and feel confident yourself when presenting materials. You’ll find helpful free printables throughout.

  • Best Science Practices (as it relates to the scientific method)
  • Science Vocabulary
  • 8 Science Books for Kids
  • All About Scientists
  • Science Supplies List
  • Science Tools for Kids

These preschool water activities below are perfect for science at home as well as in the classroom! I love to find experiments that I can set up using simple and easy resources from around the house.

These simple preschool water activities do not have to be perfect, but they need to be fun! Young kids should have time and space to explore all the available materials and experiment in ways they choose.

Click here to get your FREE Printable Science Process Pack

simple science experiments with water

Water Science Experiments For Kids

Alka seltzer experiment.

A simple water activity that involves adding alka seltzer tablets to water and oil. Sure to impress!

Cornstarch and Water

An amazing sensory play and science activity is just minutes away and all you need is two simple ingredients, cornstarch and water. Also known as oobleck. One of our favorites!

simple science experiments with water

Dissolving Candy Fish

Using candy fish is the perfect way to explore science and enjoy a classic Dr. Seuss book,  One fish two fish red fish blue fish , all in one! Get ready to set up this incredibly simple and fun water activity for your kiddos!

Drops Of Water On A Penny

How many drops of water fit on a penny? Explore surface tension of water when you try this fun penny lab with the kids.

Lava Lamp Experiment

Have you ever made a homemade lava lamp? We love to explore science with common items found around the house. A homemade lava lamp  is one of our favorite preschool water experiments!

Leak Proof Bag Experiment

Sometimes science can appear a bit magical don’t you think! Can you poke a bunch of pencils into a bag of water and have nothing leak out?

simple science experiments with water

Oil and Water Experiment

Simple science experiments at home or in the classroom are so easy to set up and perfect for young kids to play and learn with science. Learn about what happens when you mix oil and water together. 

simple science experiments with water

Penny Boat Challenge

Water, water everywhere! Design a simple tin foil boat, and see how many pennies it can hold before it sinks. 

simple science experiments with water

Salt Water Density Experiment

Can you make a fresh egg float in water? Try this easy salt water experiment, and learn about density with just water, salt, and eggs!

Sink or Float Experiment

Easy and fun kitchen science with a sink float water activity. Kids will have a blast checking out the different ways they can test sink or float with easy items.

Skittles in Water

All you need are a packet of skittles and some water for this classic experiment.

simple science experiments with water

Solid Liquid Gas Experiment

Can you believe this is a very simple water experiment you can do in little time if necessary! I set this solid, liquid, gas experiment up for us at home while I was making breakfast. It is a great way for young kids to explore states of matter.

Volume Experiments

Grab some different size bowls, water, rice and something to measure with and get started with this simple water activity.

Walking Water Experiment

A walking water science experiment is incredibly easy and fun to set up with the kids! 

Water Density Experiment

Enjoy finding out about the basics of color mixing all the way up to the density of liquids with this one simple water density experiment.

Water Xylophone

Set up this fun water experiment with water and jars.

simple science experiments with water

Water Absorption Experiment

Grab various materials from around the house or classroom and investigate what materials absorb water and what don’t.

What Dissolves In Water?

Explore solubility with this easy water science experiment. What will dissolve in water and what won’t?

Water Displacement Experiment

This water experiment is the perfect example of how just a few simple supplies provide a cool learning experience for young kids.

Water Refraction Experiment

Why do objects look different in water? A simple water experiment that shows how light bends or refracts as it moves through water.

simple science experiments with water

More Fun Water Play Ideas

There is nothing like a sensory bin with water for hours of play and learning!

Check our list of ice play activities!

The simple act of melting ice is a great science experiment for preschoolers. This type of play opens many avenues for exploring, discovering, and learning about the world.

Provide your child with squirt bottles, eye droppers, scoops, and basters, and you will also work strengthening those little hands for handwriting down the road!

simple science experiments with water

More Preschool Topics To Explore

  • Dinosaur Activities
  • Space Theme
  • Geology Activities
  • Plant Activities
  • Weather Theme
  • Art Projects
  • Ocean Theme
  • 5 Senses Activities

Printable Preschool Pack

Get ready to explore this year with our growing Preschool STEM Bundle !

What’s Included:

There are 10+ preschool themes to get you started. This is an ” I can explore” series! NOTE: This is a growing bundle; when new themes are added, they will be sent to you!

Each unit contains approximately 15 activities, with instructions and templates  as needed. Hands-on activities are provided to keep it fun and exciting. This includes sensory bins, experiments, games, and more! Easy supplies keep it low cost and book suggestions add to the learning time.

simple science experiments with water

What a wonderful collection of activities! I love the water displacement mind tornado in a bottle activities!

I want to share a freebie with you as a thank you as well! http://www.teacherspayteachers.com/Product/Fine-Motor-Skills-FREEBIE-Circle-Time-Activities-1441256

Nice ideas. In summer hot weather it will great fun for kids. Really great fun ideas for toddlers. Kids generally love to play with water. So This water activities for toddlers must be great fun.

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Hands On As We Grow®

Hands on kids activities for hands on moms. Focusing on kids activities perfect for toddlers and preschoolers.

12 Water Experiments for Kids to do This Year that are Easy Peasy & Fun!

Science Preschoolers Experiment Resources Water Activities 15 Comments

Get ready, get set, and get wet with easy water experiments for kids to do this year!

I’m always looking for fun ways to add science experiments to our hands-on learning fun . When we have summer days heating up, my boys are just begging to go outside and get wet.

Cool off this summer with our top 12 favorite water activities for kids!

Get a FREE week of Science Experiments to Download

Easy Peasy & Fun Water Experiments for Kids to do This Summer!

Water experiments are a favorite of my boys. Really, it’s just water generally that they love. But they love most science activities as well, so these two combined are magical in our house.

But learning with water is even better, right? And it’s always fun to experiment with things!

Kids don’t really even know they’re learning anything because it’s just all fun!

Learning with water science experiments!

In the summer, we’re all about water experiments. Cooling off plus learning? Perfect!

But it can also be so challenging to keep coming up with ideas all on your own day after day.

How can you learn the most with simple science experiment for young kids?

Put the scientific method to use.

Give your child a pencil to jot down information, or have them record their voice.

Record their predictions prior to starting the water experiments.

Form a hypothesis.

What do you think you will happen?

During the experiment, you are gathering data about what is happening.

Do more questions arise?

What would happen if we tried ____?

Test our your questions that are coming up.

This is a very simplified way to apply the scientific method when doing science experiments with toddlers and preschoolers.

They may not be able to identify what it is exactly that they’re thinking might happen, so use this as a simple way to explore.

Cool off this summer with our top 12 favorite water activities for kids!

What are things you do with water to experiment & learn?

  • What Absorbs Water? A stem activity to see what items from nature will absorb the water into them rather than displacing.
  • Sink or Float Water Experiment ! This is a fun science lesson about density to see what items from around the house, their favorite toys, will sink to the bottom of a tub versus stay on top.
  • What Dissolves in Water? We did this water experiment with glasses of water or plastic cups, we’ve also done it in mason jars in the past. Gather some pantry items and put a spoonful in the water and give it a stir! What happens?
  • Water Cycle Experiment . Have your preschooler give you predictions! What will happen to an ice cube as it gets heated? Explore the full water cycle in this simple stem activity.
  • Colorful Water Play. Mixing up different colors to see what color you can make. Check out this variation as well. Water Displacement with Pennies . Kids Activities Blog has explored what coins do with a cup of water!
  • Liquid Layering Tutorial . Check out Whiz Kid Science for a full tutorial on how to layer different colors of liquids based on their densities.
  • Egg Float Experiment . Nerdy Science has how to make an egg float.
  • Reverse Water Pollution . Head over to Along the Way to check out this experiment on reversing water pollution.
  • Magic Pepper Water Experiment. All you need for this simple experiment is some water, pepper and a drop of dish soap! It so much fun to watch as the dish soap breaks the surface tension.
  • Water Xylophone! Ever wanted to make music with cups of water? It’s not as hard as you think! Check out the tutorial.
  • What Holds More? Grab some of your child’s favorite toys that can double as containers (we used wagons) and predict and test what holds more water!
  • Walking Water Experiment. Pour water into a couple mason jars and add food coloring to each. Connect the two with a paper towel and see what happens. Get all the details here.

Cool off this summer with our top 12 favorite water activities for kids!

What are your favorite ways to learn with your kids with water? Share your ideas with us!

About jamie reimer.

Jamie learned to be a hands on mom by creating activities, crafts and art projects for her three boys to do. Jamie needed the creative outlet that activities provided to get through the early years of parenting with a smile! Follow Jamie on Pinterest and Instagram !

More Hands on Kids Activities to Try

Try these 30 super cool science experiments for preschoolers!

Reader Interactions

15 comments.

April Joy Bernas says

September 15, 2016 at 1:58 am

I will try these activities, although I don’t have children yet. I will make sure my nieces and nephews will enjoy these things, especially now that they just gonna look at their phones and gadgets all day…lol :-) Wish me luck…and thank you.

Gameiva says

May 27, 2015 at 7:24 am

amazing experiment with water..thanks for sharing ..you can even perform this experiment from an amazing science game ..this is totally amazing

November 9, 2014 at 10:47 am

Found this page really interesting.

George says

October 17, 2014 at 12:10 am

Great list Jamie, thanks! Our kids enjoy experiments like these. We generally pick one from here http://www.schoolofdragons.com/how-to-train-your-dragon/science-experiments

jagadeesh says

August 26, 2014 at 9:18 am

Thankyou.. ….

Jessica says

June 13, 2013 at 7:35 pm

Very fun ideas! I’m pinning the page. Thanks for linking to the Nerdy Science experiment.

Jamie Reimer says

June 16, 2013 at 5:00 pm

Thanks Jessica! :)

Amanda @ notjustcute says

June 5, 2013 at 10:51 am

Thanks for including my post, Jamie! I also love the changing states of water experiment. I did it once in my first grade classroom (with the addition of some salt during the ice stage) because a child had asked why cars had all that white stuff on them in the winter time. (We use salt on the snowy roads here.) Nothing teaches like hands-on doing!

June 5, 2013 at 10:53 am

Our water cycle experiment also included salt for the same reason. I have an inquisitive child as well. Love your absorbing experiment – we did it the other day outside. I’ll be sharing that soon.

Erin- The Usual Mayhem says

June 5, 2013 at 7:13 am

Great collection of ideas, Jamie! Pinned and shared.

June 5, 2013 at 7:38 am

Thank you Erin!

Ann @ My Nearest and Dearest says

June 5, 2013 at 6:27 am

Thanks for including our reflections investigation, Jamie!

You’re welcome :) Thanks for submitting it here!

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STEM Water Projects and Science Experiments For Kids

50+ STEM Water Science Experiments and STEM Projects for Kids in Elementary – play, educate and grow with nature’s favourite drink

Water is one of the greatest mediums for exploring science. It’s easy to work with, it’s readily available, it’s safe and kids love playing with it. It is impossible not to have fun while learning with water. Are you looking for some great ideas for water projects in your class, homeschool or home? Find inspiration on this list of over 50 fun science experiments and water projects for kids!

The Best Water Science Experiments for Kids

What you will discover in this article!

Water projects and Science Experiments

Disclaimer: This article may contain commission or affiliate links. As an Amazon Influencer I earn from qualifying purchases. Not seeing our videos? Turn off any adblockers to ensure our video feed can be seen. Or visit our YouTube channel to see if the video has been uploaded there. We are slowly uploading our archives. Thanks!

To make navigating this resource easier, I have divided all of our water projects and STEM activities into some general categories.

CHEMISTRY WATER EXPERIMENTS

Bath Bombs or Bath Fizzies are the ultimate in bath time fun! They are also an exceptional chemistry experiment. You can simply make a bath bomb and see how water is the magic ingredient to trigger the reaction, or do a science experiment exploring the effect of water temperature on bath bomb reactions .

Bath Bomb Science Fair Project

Water Lab Exploring Safe Drinking Water is a science experiment that turns students into water testers with an eye for safety. Using water sources around your home or school you can easily set up this activity and in the process learn a valuable lesson about how precious safe water is for families everywhere. For more testing ideas you can check out this article .

Water STEM Lab - An activity for kids exploring what makes water safe with hands on exploration and discovery. A great STEM and safe drinking water lesson.

What’s the difference between baking soda and baking powder? Learn the answer in this experiment. Take water and add sodium bicarbonate or baking powder. Watch the results to see something spectacular!

What's the difference between baking powder and baking soda? Find out in this epic science experiment of eruptions!

Super Simple Chemistry is a kid favourite activity that explores how different substances mix with water. Not everything dissolves, start exploring these ideas with this simple activity.

Super Simple Chemistry Kids Love - For the home, classroom, camp or troop, this fun chemistry kids activity is educational, messy, fun!

Learn about pH (acidic and basic) properties with this fun fluids experiment that uses items from your kitchen to create a fascinating lab study.

Using items from the kitchen this fascinating experiment explores Acids and Bases and pH Levels. Kids will love digging through the pantry to test out whether items are an acid or a base, and explore pH levels of every day items. An excellent elementary experiment for hands on with science with lots of further studies.

Elephant Toothpaste might not seem like a water science experiment at first, but this activity is actually really cool because one of the by products of the chemical reaction is water!

Elephant Toothpaste

WATER PROJECTS EXPLORING DENSITY

Skittles Experiments require only two things – Skittles and Water. It may be simple, but this is one water experiment that is stunningly gorgeous and will have kids begging for more science time! With our study we brought in Vincent van Gogh’s Starry Night as a way to see fluid dynamics in action.

Skittles Experiment for the Science Fair inspired by Starry Night

The classic oil and water experiment is a fascinating way to introduce students the density, and in this experiment the results are beautiful!

oil and water experiment

Marble Run Density Project is a simple activity that explores the density of different liquids using marbles. It’s fun and accessible for all ages. Everyone loves a good race!

Simple Science: Exploring Denisty with Marble Races. A great way to see the effect of liquid density with stuff you have in your house right now.

Does It Float – Pop Can edition is a fascinating activity that demonstrates how the density of different canned drinks affects whether they float or not. The results are fun and this makes for a great activity during camp outs.

Do soda pop cans float or sink? The answer is a fun outdoor, camping STEM activity that is sure to wow!

Teaching The Scientific Process With Water Balloons – This is a fantastic idea for learning how to create scientific proof by exploring the science behind the “does it float pop can edition” experiment.

With this activity we are teaching the scientific process and encouraging kids to use inquiry based activities to prove theories.

COLOURFUL WATER PROJECTS

Chromatography Flowers is a super easy activity that even little kids will be able to do with minimal adult help. Watch how water helps colours travel through the coffee filter making pretty designs. For older kids, take the challenge up a level and light up your flowers with a simple circuit building activity.

With the popularity of our Circuit Bugs STEM Activity it was time to come up with something new, something with a little extra art. Introducing Circuit Flowers! Explore chromatography, diffusion, engineering and circuit building with this hands on STEAM activity. Great for mothers' day, spring, girls in STEM, and more!

Walking Rainbow – This was our attempt at the walking rainbow experiment but when things went wrong it became a whole new and exciting water science lesson.

The Walking Rainbow science experiment should have been easy, but due to a mistake we discovered a fascinating capillary action and natural balance project.

WINTER THEMED WATER PROJECTS FOR KIDS

It’s time to get chilly with this mind bending experiment. In Snow and Ice Simple Science – Melting Magic we ask kids to predict the outcome of a test that will have them saying WOW! when they see the outcome.

Snow Ice Simple Science is an experiment all ages can do and teaches valuable lessons about the molecular structure of water in ice form versus snowflake.

Why does salt melt ice? This STEM activity dives into some great winter science as it explores how salt affects ice.

A fascinating Winter STEM Activity for elementary kids exploring the effect of salt on ice. Significant results provide rewarding STEM hands-on learning.

Live somewhere cold? Explore the Mpemba Effect in a spectacular way as you create snow.

How to Make Snow and explore a cool property of water called the Mpemba Effect. It uses a little bit of science, a little bit of hot water, and a whole lot of cold to make this spectacular snow storm happen like magic.

Bottle Crush is a project that will have kids asking to go outside on a cold winter day over and over again. Like magic, kids will learn how to crush a plastic bottle without touching it, astounding their friends and family.

Bottle Crush - Crush a bottle with your mind, and a little science. Inspired by Mythbusters, a science experiment that seems like magic!

Ice Fishing Science Experiment – What is more winter than Ice Fishing? In this fun, hands on science, kids learn how salt and water interact as they go fishing for the big catch! A great challenge for a classroom or summer camp.

Ice fishing science experiment

SWEET WATER SCIENCE

Slurpee Science Continue exploring the power of salt and water with states of matter changes with this experiment that ends with a tasty treat.

Sweet slurpee science is a fantastic activity for kids, with a tasty result they will love. This simple heat transfer experiment is perfect for all ages.

Layered Lollipops is a fascinating study into density. Makes a beautiful experiment that smells amazing!

Layered Lollipops uses candy in a beautiful candy stem challenge

Lego Gummy Mummies is a project that explores what happens when water is removed, also known as desiccation which is part of the mummification process. It’s also an experiment using candy minifigs, so kids love it!

Lego Gummy Mummies are a unique experiment exploring desiccation. An excellent activity linking science and ancient historical cultures like the Egyptians.

ENGINEERING WITH WATER PROJECTS

Build A Water Clock and learn a bit about history with this easy STEM project. This project can be scaled for use by kids of all ages.

Water Clock STEM Activity

Ice STEM Projects explore all the amazing things you can do when water enters a solid state, better known as ice! The dinosaur ice sculpture is just too cute and kids will love engineering their own ice creations.

An Ice STEM Engineering Challenge that is fascinating and an inspiring learning opportunity. Perfect for homeschoolers and young scientists, with everything you need in one box.

Build a Compass and embrace your inner Einstein! Witness the invisible forces that captured a young Einstein’s imagination and led to a lifetime of incredible discoveries.

DIY compass

Build a Heart Model filled with water (aka blood) and explore how the blood moves around the heart.

This Heart STEM activity to build a functioning heart model uses all 4 STEM pillars - Science, Technology, Engineering and Math. Kids will spend some time learning about their own heart rates, then how blood flows through the body. For the exciting conclusion engineer and build a functioning model of a beating heart.

Engineer An Ice Lantern , perfect for the holidays.

Engineering A Christmas Ice Lantern - Holiday STEM activity

WATER PROJECTS THAT ARE LIKE MAGIC

Chasing Hearts – This science experiment is like magic as you explore science and physics principles, all while playing a fun game!

Chasing Hearts Valentine's Game is a fun challenge that has a science twist. Students will love watching the "magic" as their hearts lift and start to drift away. But using a little physics you can capture your hearts.

Keep it Dry – A slight of hand activity that kids of all ages love to take a turn at. Become a magical scientist!

Can you keep paper dry in water, even when it's completely submerged? You can if you understand the science in this magic meets science water project.

Why Does Water Rise? is an activity that is like magic! Kids love this STEM Activity that involves a little tech in the investigative process.

Why Does Water Rise? Best Science Experiments for Kids!

Build a Leak Proof Bag that is filled with water and pierced through with tons of pencils? Sounds impossible, but it’s not if you know the science!

ENVIRONMENTAL WATER PROJECTS FOR KIDS

Students get hands on with a major threat to our marine environments in this Oil Spill Cleanup Experiment .

Oil spill cleanup experiment for home or classroom

Learn about the Water Cycle in this simple science experiment in a jar. Perfect for students or as a classroom demonstration.

Water Cycle for Kids

In this experiment, explore how acid rain affects plant life . It is a simple experiment with powerful results.

Acid Rain Science Experiment

Next, we explore how water pollution affects plants . This is a simple experiment exploring the effects of water pollution in two different ways. Students learn about osmosis, pH and the scientific method.

A simple science experiment exploring the effects and damage caused by water pollution on flowers

The Water Desalinization Project is a interesting activity that explores how to remove the salt from salt water making it safe to drink.

A series of experiments exploring the properties of saltwater including a desalination science experiment (the removal of salt from saltwater).

This Fish Diving Activity is a neat way to explore how fish use air to help them move around underwater. A similar activity involves creating a Cartesian Diver .

SENSORY WATER PROJECTS

DIY Play Dough Bubble Bath is not a water project exactly, but it’s an inexpensive way to create some bubble bath play dough. Perfect for doing water projects with kids in the bath tub or at a water table.

DIY Play Dough Bubble Bath - Easy clean fun!

Oobleck is a captivating activity to explore the difference in liquids. With the addition of one ingredient to water you create the most bizarre substance. Oobleck projects are an excellent addition to the study of states of matter and the senses. We LOVE playing with Oobleck and have created dozens of fun ways to explore this non-Newtonian Fluid.

Oobleck Sensory Science

DIY Soap Projects , especially Soap Jellies are a fantastic sensory experience that will encourage kids to get clean! They are so much fun, and super easy to make. For an incredible cross study, make our DIY Layers of the Ocean soap and learn about the ocean with this gorgeous and easy soap making project.

Jelly Soap Making - Sparkly, Jiggly, Soapy Fun Jellies!

More Water Science Experiments

Explore why the Sky Changes Colour in this fascinating and simple science project demonstrating how the skies change colour during sunrise and sunset.

Sky Science is a simple experiment that answers one of childhoods biggest questions - Why is the sky blue and why does the sky change colors at sunset?

Another great project is the Rainbow Rain Project . Students will create a stunning display of colour in a jar to explore how clouds (made with shaving cream), hold and release moisture, creating rain! This project is GORGEOUS and so simple.

Rainbow Rain Shaving Cream Cloud in a Jar Experiment

Magic Glitter is a cool experiment that is also a powerful demonstration on how soap works and why it is so important to wash your hands with soap.

Magic Glitter Handwashing Demonstration

Have fun learning with nature’s most valuable liquid – water!

Cool Science Experiments for Kids

5 Days of Smart STEM Ideas for Kids

Get started in STEM with easy, engaging activities.

Lil Tigers

Easy Water Science Experiments for Kids

By: Author Susanne Williams

Posted on Published: May 3, 2022  - Last updated: December 30, 2023

Here is a full list of our 25 Best Science Experiments With Water .

From growing a rainbow through to sink and float experiments, or a water cycle activity. There is a lot to explore and learn at home and in the classroom.

Let’s dive right in and get inspired!

15 Easy Water Science Experiments for Kids

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Table of Contents

Simple water science experiments for kids, best science kits for kids, pin these science projects with water.

Play, explore, and learn. This is the slogan of our list of fun science projects with water. Here you will find simple experiments with water to do at home or in a school setting.

They are all easy to manage and do not need a lot of preparation. Most of these water science experiments are suitable for preschoolers and older children.

Go check out our fun list of the 25 Best Water Science Experiments for kids now:

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Best Water Science Experiments for Kids

Go check out our full list of fun STEM water projects for preschoolers and older kids.

The link below brings you directly to the instructions and will explain everything you need to know about the science behind these fun experiments with water.

Let's get started:

simple science experiments with water

Fizzy Ice Cubes Water Experiment for Kids

Playing with water is so much fun. To make it more interesting, make some fizzy ice cubes for your kids.

It will help them stay cool during the hot summer. It is such a fun experiment with water!

simple science experiments with water

Sherbert Water Science Experiment

For this cool water science project, you will need Sherbert.

The article will show you how much oxygen Sherbert can produce and explain the science behind it for you!

simple science experiments with water

DIY Rainbow Cloud

Our rainbow cloud is such a cool science experiment about water. It helps you to learn and understand our water cycle on Earth.

simple science experiments with water

Cool Water Experiment for Kids: Grow a Rainbow

Let's stay at our weather activities and learn how to make grow your own rainbow. I tell you it is super simple but so much fun.

Give it a try!

simple science experiments with water

Water Experiment with Explanation: Dancing Grapes

Dancing Grapes is on the other hand a totally different STEM water project. By letting grapes dance it explains to you how air can move objects.

It is set up in 5 minutes and needs only 2 ingredients. Super simple right?

simple science experiments with water

Skittles Experiment

This skittle STEM water acitivity is a classic! All you need is skittles and water and you are good to go.

You can make different patterns or even just use red and blue once for American holiday activities such as 4th of July or Memorial Day.

simple science experiments with water

Surprise Egg Project

Have fun with the classic sink or float experiment, with a twist. Use surprise eggs to add an extra element of excitement to this activity

simple science experiments with water

Water Cycle Bag Activity

See how water transforms through the water cycle with this simple water cycle bag experiment.

You have everything in your kitchen right now to get started

simple science experiments with water

Simple Water Experiment: Snowstorm in a Jar

Did you know you can make a miniature blizzard right in your own kitchen?

Check out this cool science experiment that lets kids create a snowstorm in a jar!

simple science experiments with water

Sink or Float Science Experiment with Water

This water experiment for preschoolers is so much fun. They can experiment with different toys or materials if they sink and float.

It is super easy but so much fun, you will see.

simple science experiments with water

Magic Water Crystals

Experiment with water and salt by making beautiful crystals! Only three ingredients are needed!

simple science experiments with water

Rainbow Walking Water Science Experiment for Kids

Walking water is such a fun STEM water project. It gives your children the chance to learn about colors and how they are mixed. They will see with their own eyes and remember better.

simple science experiments with water

Bottle Crush

This is such a cool magic trick, isn't it? Learn how to crush a bottle with your own mind and science. Go find out how it works here.

simple science experiments with water

Lava Lamp Water Science Experiment

This is a very simple water science experiment for kids.

Within 5 minutes, they can make their own lava lamp and calm down while watching the oil flow in the water.

simple science experiments with water

Pepper and Soap STEM Project

This pepper and soap STEM activity is a great water science fair project.

You can show your classmates and family members fast how soap reacts with pepper and water and explain the science about it.

simple science experiments with water

Glowing Water Science Experiment

Let's make some glowing water. This fun water STEM activity is especially popular during Halloween but can be used all year round.

simple science experiments with water

Fireworks in a Glass

Did you make your own Firework in a jar yet? It is so much fun and if you use blue and red it makes such a great 4th of July STEM activity for preschoolers or at home. Give it a try!

More Science Experiments with Water

If these water experiments for kids weren't enough go check out the following experiments with water:

  • Floating Eggs Water Experiment
  • Rippel Effekt Experiment
  • Water Experiment with Milk Jug
  • DIY Lava Lamp
  • Sand Filter Experiment with Water
  • Water Pollution Experiment for Kids
  • Oil and Water Science Experiment
  • Water Balloon STEM Activity
  • Traveling Water Experiment for Kids
  • Under Water Sound STEM Experiment

You might also enjoy these Edible Glass Science Project , Crystal Snowflake Ornaments – DIY Borax Science Experiment , or check out these cool Water Toys instead.

Are you a visual learner? Then check out this great video with these 25 easy science water experiments for your home:

You do not have all the ingredients at home for our fun science projects with water? Or do you simply like the convenience of a science kit where you have everything in one place?

No problem here is a list of the Best Science Kits for Kids for you:

  • National Geographic Sensory Experiment Set
  • Primary Science Lab Set Deluxe
  • Science Kit for Kids
  • Doctor Jupiter My First Science Kit for Kids 4-6-8 Years Old

Why bother with science experiments? Here you can find 8 Benefits of STEM Education and why it is so important for kids.

Now I would like to hear from you! Did you try any of those simple science experiments with water? Which one is your favorite? Either way, let me know by leaving a comment below right now. I would love to hear from you!

Don’t forget to save these 25 Easy Science Projects with Water on Pinterest for later! Be sure you are following along with Lil Tigers.

IMAGES

  1. Easy Rainbow Walking Water Experiment For Kids

    simple science experiments with water

  2. 10 amazing water experiments, including, make a mini water cycle

    simple science experiments with water

  3. Simple Science: How Clouds Make Rain

    simple science experiments with water

  4. Oil and Water Science Experiment for Kids: Simple Science Experiment

    simple science experiments with water

  5. Water Suspension Science Experiment for Kids

    simple science experiments with water

  6. 3 Easy Water Experiments for Kids

    simple science experiments with water