simple water science experiments

37 Water Science Experiments: Fun & Easy

We’ve curated a diverse selection of water related science experiments suitable for all ages, covering topics such as density, surface tension, water purification, and much more.

These hands-on, educational activities will not only deepen your understanding of water’s remarkable properties but also ignite a passion for scientific inquiry.

So, grab your lab coat and let’s dive into the fascinating world of water-based science experiments!

Water Science Experiments

1. walking water science experiment.

This experiment is a simple yet fascinating science experiment that involves observing the capillary action of water. Children can learn a lot from this experiment about the characteristics of water and the capillary action phenomenon. It is also a great approach to promote scientific curiosity and enthusiasm.

Learn more: Walking Water Science Experiment

2. Water Filtration Experiment

A water filtering experiment explains how to purify contaminated water using economical supplies. The experiment’s goal is to educate people about the procedure of water filtration, which is crucial in clearing water of impurities and contaminants so that it is safe to drink.

Learn more: Water Filtration Experiment

3. Water Cycle in a Bag

The water cycle in a bag experiment became to be an enjoyable and useful instructional exercise that helps students understand this idea. Participants in the experiment can observe the many water cycle processes by building a model of the water cycle within a Ziplock bag.

4. Cloud in a Jar

The rain cloud in a jar experiment is a popular instructional project that explains the water cycle and precipitation creation. This experiment is best done as a water experiment since it includes monitoring and understanding how water changes state from a gas (water vapor) to a liquid (rain) and back to a gas.

Learn more: Cloud in a Jar

5. The Rising Water

The rising water using a candle experiment is a wonderful way to teach both adults and children the fundamentals of physics while also giving them an exciting look at the properties of gases and how they interact with liquids.

6. Leak Proof Bag Science Experiment

In the experiment, a plastic bag will be filled with water, and after that, pencils will be inserted through the bag without causing it to leak.

The experiments explain how the plastic bag’s polymer chains stretch and form a barrier that keeps water from dripping through the holes the pencils have produced.

Learn more: Leak Proof Bag Science Experiment

7. Keep Paper Dry Under Water Science Experiment

The experiment is an enjoyable way for demonstrating air pressure and surface tension for both adults and children. It’s an entertaining and engaging technique to increase scientific curiosity and learn about scientific fundamentals.

Learn more: Keep Paper Dry Under Water Science Experiment

8. Frozen Water Science Experiment

The Frozen Water Science Experiment is a fun and engaging project that teaches about the qualities of water and how it behaves when frozen.

You can gain a better knowledge of the science behind the freezing process and investigate how different variables can affect the outcome by carrying out this experiment.

9. Make Ice Stalagmites

10. Bending of Light

A fascinating scientific activity that explores visual principles and how light behaves in different surfaces is the “bending of light” water experiment. This experiment has applications in physics, engineering, and technology in addition to being a fun and interesting method to learn about the characteristics of light.

11. Salt on a Stick

This experiment is an excellent way to catch interest, engage in practical learning, and gain a deeper understanding of the characteristics of water and how they relate to other substances. So the “Salt on Stick” water experiment is definitely worth trying if you’re looking for a fun and educational activity to try!

Learn More: Water Cycle Experiment Salt and Stick

12. Separating Mixture by Evaporation

This method has practical applications in fields like water processing and is employed in a wide range of scientific disciplines, from chemistry to environmental science.

You will better understand the principles determining the behavior of mixtures and the scientific procedures used to separate them by performing this experiment at home.

13. Dancing Spaghetti

Have you ever heard of the dancing spaghetti experiment? It’s a fascinating science experiment that combines simple materials to create a mesmerizing visual display.

The dancing spaghetti experiment is not only entertaining, but it also helps you understand the scientific concepts of chemical reactions, gas production, and acidity levels.

14. Magic Color Changing Potion

The magic color-changing potion experiment with water, vinegar, and baking soda must be tried since it’s an easy home-based scientific experiment that’s entertaining and educational.

This experiment is an excellent way to teach kids about chemical reactions and the characteristics of acids and bases while providing them an interesting and satisfying activity.

15. Traveling Water Experiment

In this experiment, you will use simple objects like straws or strings to make a path for water to pass between two or more containers.

Learn more: Rookie Parenting

16. Dry Erase and Water “Floating Ink” Experiment

The dry-erase and water “floating ink” experiment offers an interesting look at the characteristics of liquids and the laws of buoyancy while also being a great method to educate kids and adults to the fundamentals of science.

Learn more: Dry Erase and Water Floating Ink Experiment

17. Underwater Candle

In this experiment, we will investigate a connection between fire and water and learn about the remarkable factors of an underwater candle.

18. Static Electricity and Water

19. Tornado in a Glass

This captivating experiment will demonstrate how the forces of air and water can combine to create a miniature vortex, resembling a tornado.

Learn more: Tornado in a Glass

20. Make Underwater Magic Sand

Be ready to build a captivating underwater world with the magic sand experiment. This experiment will examine the fascinating characteristics of hydrophobic sand, sometimes referred to as magic sand.

21. Candy Science Experiment

Get ready to taste the rainbow and learn about the science behind it with the Skittles and water experiment! In this fun and colorful experiment, we will explore the concept of solubility and observe how it affects the diffusion of color.

Density Experiments

Density experiments are a useful and instructive approach to learn about the characteristics of matter and the fundamentals of science, and they can serve as a starting point for further exploration into the fascinating world of science.

Density experiments may be carried out with simple materials that can be found in most homes.

This experiment can be a great hands-on learning experience for kids and science lovers of all ages.

22. Super Cool Lava Lamp Experiment

The awesome lava lamp experiment is an entertaining and educational activity that illustrates the concepts of density and chemical reactions. With the help of common household items, this experiment involves making a handmade lava lamp.

Learn more: Lava Lamp Science Experiment

23. Denser Than you Think

Welcome to the fascinating world of density science! The amount of matter in a particular space or volume is known as density, and it is a fundamental concept in science that can be seen everywhere around us.

Understanding density can help us figure out why some objects float while others sink in water, or why certain compounds do not mix.

24. Egg Salt and Water

Learn about the characteristics of water, including its density and buoyancy, and how the addition of salt affects these characteristics through performing this experiment.

25. Hot Water and Cold-Water Density

In this experiment, hot and cold water are put into a container to see how they react to one other’s temperatures and how they interact.

Sound and Water Experiments

Have you ever wondered how sound travels through different mediums? Take a look at these interesting sound and water experiments and learn how sounds and water can affect each other.

26. Home Made Water Xylophone

You can do this simple scientific experiment at home using a few inexpensive ingredients to create a handmade water xylophone.

The experiment demonstrates the science of sound and vibration and demonstrates how changing water concentrations can result in a range of tones and pitches.

Learn more: Home Made Water Xylophone

27. Create Water Forms Using Sound!

A remarkable experiment that exhibits the ability of sound waves to influence and impact the physical world around us is the creation of water formations using sound.

In this experiment, sound waves are used to generate patterns and shapes, resulting in amazing, intricate designs that are fascinating to observe.

28. Sound Makes Water Come Alive 

These experiments consist of using sound waves to create water vibrations, which can result in a variety of dynamic and captivating phenomena.

29. Water Whistle

The water whistle experiment includes blowing air through a straw that is submerged in water to produce a whistle.

This experiment is an excellent way to learn about the characteristics of sound waves and how water can affect them.

Water Surface Tension Experiments

You can observe the effects of surface tension on the behavior of liquids by conducting a surface tension experiment.

By trying these experiments, you can gain a better understanding of the properties of liquids and their behavior and how surface tension affects their behavior.

30. Floating Paperclip

In this experiment, you will put a paper clip on the top of the water and observe it float because of the water’s surface tension.

31. Water Glass Surface Tension

Have you ever noticed how, on some surfaces, water drops may form perfect spheres? The surface tension, which is a characteristic of water and the cohesive force that holds a liquid’s molecules together at its surface, is to blame for this.

32. Camphor Powered Boat

The camphor-powered boat experiment is a fun and fascinating way to explore the principles of chemistry, physics, and fluid mechanics. In this experiment, a miniature boat is used to travel across the water’s surface using camphor tablets.

33. Pepper and Soap Experiment

The pepper in a cloud experiment is a simple and interesting activity that explains the concept of surface tension. This experiment includes adding pepper to a bowl of water and then pouring soap to the mixture, causing the pepper to move away from the soap.

Learn more: Pepper and Soap Experiment

Boiling Water Experiments

Experiments with boiling water are an engaging and informative way to learn about physics, chemistry, and water’s characteristics.

These investigations, which include examining how water behaves when it changes temperature and pressure, can shed light on a variety of scientific phenomena.

It’s important to take the proper safety measures when performing experiments with hot water. Boiling water can produce steam and hot particles that are dangerous to inhale in and can result in severe burns if it comes into contact with skin.

34. Make It Rain

This experiment can be accomplished using basic supplies that can be found in most homes, make it an excellent opportunity for hands-on learning for both kids and science lovers.

Learn more: Make it Rain

35. Fire Water Balloons

Learning about the fundamentals of thermodynamics, the behavior of gases, and the effects of heat on objects are all made possible by this experiment.

36. Boil Water with Ice

The Boiling Water with Ice experiment is an engaging and beneficial approach to learn about temperature and the behavior of water. It can also serve as an introduction for further discovery into the wonderful world of science.

37. Boil Water in a Paper Cup

The “boil water in a cup” experiment is an easier but powerful approach to illustrate the idea of heat transmission by conduction. This experiment is often used in science classes to teach students about thermal conductivity and the physics of heat transfer.

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• Top 50 Fun Food Science Experiments

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40 Simple Water Science Experiments for Kids

April 16, 2018 by Selena Robinson Leave a Comment

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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.

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!

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

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

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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!

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

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!

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.

Grow A Rainbow

A fun and colorful experiment that uses a paper towel, markers and water to demonstrate the process of capillary action.

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?

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. 

Penny Boat Challenge

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

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.

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.

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.

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!

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.

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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