experiments with water for class 6

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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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!

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 .

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 .

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!

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.

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

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!

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.

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

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!

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.

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.

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.

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.

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.

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

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

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.

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.

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.

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

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!

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.

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.

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.

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

Engineer An Ice Lantern , perfect for the holidays.

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!

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

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.

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 .

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

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

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.

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

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.

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.

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.

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.

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.

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.

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

5 Days of Smart STEM Ideas for Kids

Get started in STEM with easy, engaging activities.

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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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Water Experiments for Kids That Are a Big Hit in the Classroom

Written by Cassie (Teach Starter)

Are you teaching your students about water in your science classes? It’s time to pull out the water activities for kids that will wow them … while also helping your students learn about density, salinity, mass, and a whole lot more.

The teachers on the Teach Starter team have put together some water experiments for kids that can easily be done in a classroom with little prep — and without a ton of expensive items to buy. These water science activities are also easy for kids to recreate at home if they want to show off their newfound knowledge.

Water Experiments for Kids

Let me add, it’s always a great idea to try these experiments at home before you do them with your class for the first time. Just to make sure you know any little tweaks that are needed to illustrate the concepts you are exploring!

Understanding the Effects of Water Temperature

Use this water experiment for kids to explore the concept of temperature and its effect on the speed that molecules move. This science experiment for kids will quickly illustrate how molecules move faster in hot temperatures and slower in cold temperatures.

You will need:

• Room temperature water
• 3 stopwatches (or phones)

How to do this water science activity:

• Fill one glass with cold water, one with room temperature water, and one with hot water. (It is best to prepare the cold water and room temperature water earlier. Leave one glass in the refrigerator for at least an hour prior to the experiment. Leave another glass sitting out for at least an hour too, as if the water in your pipes is a bit cold this will reduce the efficacy of the experiment.)
• Place a stopwatch in front of each glass.
• Fill the dropper with food dye.
• Drop 2-3 drops of food dye in each of the glasses and observe how the food dye behaves in each different water temperature.
• Start the stopwatches when the food dye is dropped.
• Stop each watch as the food dye has mixed completely with the water.

Your students will be able to see how the food dye mixes quickly with the hot water because the molecules are moving quickly. It takes longer to mix in the room temperature water as the molecules move slower, and in the cold water, the food dye will take the longest to mix as the molecules move at the slowest speed of all three samples.

Eventually, the food dye will mix through the water in all three glasses. Students can predict how long each will take and then record the final times on each of the stopwatches.

Salt Water Density Experiments

Use this experiment to introduce the concepts of density, mass, salinity, and buoyancy.

In this experiment, you and your students will use one bowl of fresh water and one bowl of salt water to explore how salinity affects the buoyancy of different foods. For example, what happens when you put eggs in a bowl of fresh water and a bowl of salt water?

To get started, download and print the Salt Water Density Experiment resource , and prepare the materials described.

Challenge your students to guess whether they will have the same or different results if they try this same experiment using potatoes in place of the eggs.

This experiment also uses food dye to explore how liquid molecules behave differently in fresh water and saltwater.

When your students understand how water behaves differently depending on its density, they can begin to understand more about topics such as:

• the effects of freshwater runoff from melted sea ice in the Antarctic
• how different parts of the ocean have different levels of salinity
• why objects that would normally sink (like people) can float in bodies of water with high salinity like the Dead Sea in the Middle East and the Great Salt Lake in the United States
• how salinity affects the different layers of the ocean and the types of marine life that can live in each layer.

Refraction of Light Science Activity

This water experiment for kids is incredibly simple to set up, and it will help your students better understand refraction, the change of direction of light waves, when they hit water.

All you need is:

• A Glass of water

Draw something on a piece of paper. An arrow is a great visual to start this science activity as it is obvious what happens when you put the glass of water in front of the drawn arrow. But you don’t have to limit it to arrows. Get creative and draw anything you would like to see through the glass.

When the light is passing through the glass of water, it refracts or bends. The glass of water acts as a cylindrical convex lens and produces an inverted image.

Create a fair test by changing one variable. What happens if you change the size of the glass? Or what if you change the liquid variable? Does it change the result?

Teach your students more about reflection and refraction with these resources:

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Create a Lava Lamp Science Activity

No need to head out to buy a lava lamp. You can make your own “lamp” with this fun water activity for kids that teaches about the changes of density as gas is added to or taken away from the water.

• Two glasses
• Vegetable oil
• Food coloring
• Alka-Seltzer tablets

Firstly, mix half a cup of water with some drops of food coloring. You can make two different batches with different colors if you wish to make more than one lava lamp.

Then, fill a glass with vegetable oil (3/4 full). Pour some of the colored mixture into the oil, being careful not to fill the glass too much.

Add one Alka-Seltzer tablet, and watch the chemical reaction…

The Alka-seltzer tablets react with the water to produce carbon dioxide gas bubbles in this fun water activity! These stick to the water droplets. The water/gas combo is less dense than the oil, so they rise to the top of the glass!

Make this a fair test by changing the amount of Alka-seltzer added. In one glass you can add one tablet, another can have two tablets, and another can have three. What happens when you change up the water experiment?

For more water density fun, try these resources:

[resource:1872818][resource:640196][resource:4680428]

Moving Water Experiment

This water activity for kids explores water movement and helps kids understand capillary action. It does take a couple of hours for the results to finalize, so it’s best an experiment that you set and forget, checking back in throughout the day with your class. Perhaps take a picture every half hour to monitor your progress!

Aim: To investigate the movement of water when it has paper towel placed in it.

• A measuring cup
• 4 pieces of paper towel
• Red, blue and yellow food dye
• 5  clear drinking cups/glasses (jars work well too!)
• water – enough to pour equal amounts into 3 of the cups
• 3  mixing spoons
• Line up 5 cups. Fill cups number 1, 3, and 5 with equal amounts of water.
• Place equal drops of food dye into each cup of water – place blue into one cup, red into another, and yellow into the final cup. Mix each cup thoroughly with a new spoon to prevent cross-contamination.
• Place a scrunched piece of paper towel so that it creates a bridge between each cup in the line. The paper towel must be quite deep in the water in each cup.
• Watch what happens over the next few hours and record your results!

This is similar to the way that the roots of a tree pull water up and out of the ground. You can observe the movement and direction of the water by watching the water move up the paper towel, and observing the empty cups filling with a ‘new’ colored water as the two primary colors on either side mix together.

Possible questions to ask:

• What will the food dye from one cup do when it mixes with the dye from another cup?
• Why do you think the water didn’t move backward once the empty cups started to fill up?
• Why do you think the water stopped moving once the cups leveled out?

Check out this fun capillary action water activity for kids using flowers or this one using paper towels and capillary action to make roses that the kids can bring home to gift to someone they love.

For more science experiments for kids and more ways to teach science to elementary schoolers, check out our full array of science teaching resources !

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30 Easy Water Experiments For Kids

Water experiments aren’t just for summer! Water is easy and budget-friendly for science learning with preschoolers, elementary-age kids, and even middle school science. Check out our list of our favorite science experiments with water and look for the free printable water themed science camp week guide!

SCIENCE EXPERIMENTS WITH WATER

What do all these science experiments and STEM projects below have in common? They all use water!

These water experiments are perfect for at home and in the classroom with simple household items like salt. Also, check out our science experiments with baking soda.

Let’s dig in if you want to explore science with water as the main ingredient! While you’re at it, make sure to check out more kid-friendly science experiments.

Our science activities and experiments are designed with you, the parent or teacher, in mind! Easy to set up, and quick to do, most activities will take only 15 to 30 minutes to complete and are heaps of fun!

USING THE SCIENTIFIC METHOD

The scientific method is a process or method of research. A problem is identified, information about the problem is gathered, a hypothesis or question is formulated from the information, and the hypothesis is put to the test with an experiment to prove or disprove its validity. Sounds heavy…

What in the world does that mean?!? The scientific method should be used as a guide to help lead the process.

You don’t need to try and solve the world’s biggest science questions! The scientific method is all about studying and learning things right around you.

As kids develop practices that involve creating, gathering data evaluating, analyzing, and communicating, they can apply these critical thinking skills to any situation. To learn more about the scientific method and how to use it, click here.

Even though the scientific method feels like it is just for big kids…

This method can be used with kids of all ages! Have a casual conversation with younger kiddos or do a more formal notebook entry with older kiddos!

Click here to get your 12 days of science challenge calendar!

WATER EXPERIMENTS FOR KIDS

Click on each link below to explore cool experiments with water! Here you will find easy water experiments for preschoolers through middleschoolers, including the water cycle.

This age group is beginning to learn about core concepts in chemistry , including states of matter, how different substances mix or interact, and the properties of different materials.

ICE IS NICE SCIENCE

Explore the solid form of water and ice. Look at three great ice experiments that highlight the scientific method perfectly!

BENDING WATER

Can you bend water? Yes, you can with static electricity. Grab a balloon and some water to set up this easy experiment.

CANDLE IN WATER EXPERIMENT

Can you make the water rise by burning a candle under a jar? Grab a few simple supplies and find out.

CELERY EXPERIMENT

Here’s a simple explanation of how osmosis works with celery and water and a fun science demonstration!

COFFEE FILTER FLOWERS

Water is the main ingredient in this gorgeous but super easy combined science and art activity. Make a bouquet of colorful, coffee-filter flowers and explore solubility too!

COLOR CHANGING FLOWERS

This engaging color-changing flower experiment explores the concept of capillary action as your flowers magically turn from white to green. Easy to set up and perfect for a group of kiddos to do at the same time or as an interesting water science fair project.

CRUSHED SODA CAN EXPERIMENT

What happens when you heat and cool water inside a soda can?

DISSOLVING CANDY

There are all kinds of fun things you can dissolve in water!

DRY-ERASE MARKER EXPERIMENT

Is it magic or is it science? Create a dry-erase drawing and watch it float in water.

FREEZING WATER EXPERIMENT

Will it freeze? What happens to the freezing point of water when you add salt? Check out this easy water experiment to find out.

GROW A RAINBOW

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

GUMMY BEAR OSMOSIS LAB

Learn about the process of osmosis when you try this easy gummy bear osmosis experiment. Watch your gummy bears grow as you investigate what liquid makes them grow the biggest.

HOW DO SHARKS FLOAT?

Explore buoyancy with this simple oil and water experiment.

HOW MANY DROPS OF WATER ON A PENNY?

All you need for this experiment are a few coins, an eyedropper or pipette, and water! How many drops fit on the surface of a penny? What else could you use? A bottle cap turned over, a flat LEGO piece, or another small, smooth surface! Take a guess at how many drops it will take and then test it out.

ICE FISHING

Did you know you can go fishing indoors with salt, string, and ice! Kids will have a blast!

ICE MELT ACTIVITIES

Playful hands on science and learning which is perfect for our preschoolers. Explore water science with one of these fun theme ice melt activities.

LEGO WATER EXPERIMENT

Build a dam from Lego bricks and explore the flow of water.

OCEAN CURRENTS

Build a simple model of the ocean currents with ice and water.

OCEAN LAYERS

Just like layers of the earth, the ocean has layers too! Have you ever wondered how you could see them without going scuba diving in the ocean? Explore the layers of the ocean with a liquid density tower experiment for kids. 

OIL AND WATER EXPERIMENT

Do the oil and water mix? Explore the densities of liquids with this simple oil and water experiment.

POTATO OSMOSIS LAB

Explore what happens to potato when you put them in concentration salt water and then pure water. Learn about osmosis when you try this fun potato osmosis experiment with the kids.

RAINBOW IN A JAR

Can you make a rainbow in a jar? This neat rainbow water experiment explores water density with just a few materials. Instead of salt we use sugar and food coloring to stack the colors of the rainbow.

PENNY BOAT CHALLENGE

Design a simple tin foil boat, and see how many pennies it can hold before it sinks in the water. How many pennies will it take to make your boat sink?

MAKE A PADDLE BOAT

Fill the kiddie pool or tun with water and make this DIY paddle boat for fun physics!

SALT LAVA LAMP EXPERIMENT

Explore what happens when you add salt to oil and water.

SALTWATER DENSITY EXPERIMENT

Can you make an egg float? Will different items sink in freshwater but float in saltwater? Compare saltwater to freshwater with a fun experiment with salt and water. Make your predictions and test your results.

SINK OR FLOAT EXPERIMENT

Check out what you have in the kitchen for an easy science experiment with water   with some very interesting results!

SKITTLES EXPERIMENT

A super simple water science experiment with everyone’s favorite candy! Did you know you can try it with M&Ms too? You can also you those red and white mints, old candy canes, and even jelly beans!

SOAP POWERED BOAT EXPERIMENT

Explore surface tension as kids observe firsthand how soap influences the movement of a small boat on the water’s surface.

SOLID LIQUID GAS EXPERIMENT

Learn about the properties of solids, liquids and gases with this simple water experiment. Have fun observing how water changes from a solid to a liquid to a gas.

STRAW BOATS

Design a boat made from nothing but straws and tape, and see how many items it can hold before it sinks in the water. Explore buoyancy while you test out your engineering skills.

TOOTHPICK STARS

Make a star out of broken toothpicks by only adding water. Learn about capillary action with a totally do-able water experiment.

WALKING WATER EXPERIMENT

Can water walk? Make a colorful rainbow with a little color theory mixed in too! This walking water experiment is super easy and fun to set up! Mason jars, plastic cups, or bowls will also work just fine for this experiment.

WATER CYCLE IN A BOTTLE

Make a discovery bottle all about the water cycle. One of the best water science activities is one where we can learn more about one of the most important and necessary cycles on Earth, the water cycle!

WATER CYCLE IN A BAG

The water cycle is important because it’s how water gets to all the plants, animals and even us!! Learn about the water cycle with this easy water cycle in a bag experiment.

WATER DISPLACEMENT EXPERIMENT

Add this simple water displacement experiment to your science lesson plans this season. Learn about water displacement and what it measures.

WATER EVAPORATION EXPERIMENT

Dive into the process of evaporation (a liquid changes to a gas) with this simple water evaporation experiment. Investigate how different factors like temperature, airflow, and surface area affect the evaporation rate.

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.

WATER XYLOPHONE

A homemade water xylophone is perfect for exploring physics and sound science!

WATER ABSORBTION EXPERIMENT

This is a very simple and fun water experiment which is great for preschoolers. My son had a blast exploring what materials absorb water and what don’t.

WHAT DISSOLVES IN WATER

This is super simple chemistry using common items around the house to explore mixtures and discover which items dissolve in water !

Compare how fast different everyday items melt in the sun, including ice cubes. A fun experiment to do in the summer!

WATER WHEEL

Hop on this engineering project and design a water wheel that moves! Use our idea as a springboard to create your own or follow the step-by-step directions.

WATER CLOCK

Find out how to use water to tell the time with this water clock project .

Plan a Water Summer Science Camp

Grab this free guide and plan a day or two of water theme science camp activities . We have 12 free guides, each with a different theme! Use them all year long.

ALSO TRY THESE EASY SCIENCE EXPERIMENTS

• States of Matter Experiments
• Surface Tension of Water Experiments
• Chemistry Experiments
• Physics Experiments
• Fizzing Experiments
• Physical Changes
• All About Atoms

MORE HELPFUL SCIENCE RESOURCES

Science vocabulary.

It is never too early to introduce some fantastic science words to kids. Get them started with a printable science vocabulary word list . You will want to incorporate these simple science terms into your next science lesson!

WHAT IS A SCIENTIST

Think like a scientist! Act like a scientist! Scientists like you and me are also curious about the world around them. Learn about the different types of scientists and what they do to increase their understanding of their specific areas of interest. Read What Is A Scientist

SCIENCE BOOKS FOR KIDS

Sometimes the best way to introduce science concepts is through a colorfully illustrated book with characters your kids can relate to! Check out this fantastic list of science books that are teacher approved and get ready to spark curiosity and exploration!

SCIENCE PRACTICES

A new approach to teaching science is called the Best Science Practices. These eight science and engineering practices are less structured and allow for a more free**-**flowing approach to problem-solving and finding answers to questions. These skills are critical to developing future engineers, inventors, and scientists!

Printable Science Projects Pack

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
• Science Fair Project Pack with experiments to try!

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~ projects to try now ~.

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!

There are affiliate links in this post, meaning, at no additional cost to you, I will be compensated if you click through and take action. As an Amazon Associate, I earn from qualifying purchases.

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:

Are you interested in more kid’s activities, arts & crafts, and science experiments? I have made it easy for you! Simply join our newsletter now and I will send you new fun for kids. Subscribe for free

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:

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!

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!

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.

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!

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?

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.

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

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 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!

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.

Magic Water Crystals

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

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.

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.

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.

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.

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.

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.

Sinking or floating in water in Materials and Things – Class 6 Science Experiment

Chapter name:  materials and things, activity name: sinking or floating in water in  materials and things, activity description:.

This experiment aims to determine whether various objects sink or float in water. The objects to be tested include a tomato, brinjal (eggplant), potato, iron nail, sponge, wood, stone, leaf, piece of chalk, and paper.

Required Items:

• Beaker of water
• Brinjal (eggplant)
• Piece of chalk

Step by Step Procedure:

• Set up a beaker filled with water on a stable surface.
• Take the objects one by one and predict whether they will sink or float in water.
• Record your predictions in a table.

Experiment Observations:

After conducting the experiment and dropping each object into the beaker of water, the following observations were made:

Prediction:

Based on the experiment, the observations indicate:

• Objects that sank in water: Stone, Iron nail, Piece of chalk
• Objects that floated in water: Tomato, Brinjal, Potato, Sponge, Wood, Leaf, Paper

These observations confirm or refute the initial predictions made for each object’s behavior in water.

Precautions:

• Handle sharp objects (such as the iron nail) with care to avoid injury.
• Make sure the beaker is stable to prevent accidental spills.
• Clean and dry the objects after testing to avoid contamination.

Lesson Learnt from Experiment:

Science Experiment Kits for Kids

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