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1000 Science Fair Projects with Complete Instructions

34 Water Experiments

34 Water Experiments

Get ready to dive into some exciting water projects that will help you understand how incredible water is! Explore how water plays a vital role in plants, discover the special properties that make water unique and do fun chemical reactions with water! Dive in and discover the fascinating world of water!

Browse Water Experiments

Check out all the different water projects with complete instructions and videos. They're great for students' science fair projects and a fun way for kids to learn about the science of water!

Freezing Rocks: Mechanical Weathering with Water
1. Freezing Rocks: Mechanical Weathering with Water
Ever wondered how water can break rocks? Discover the power of ice in this exciting experiment on weathering!
Medium
Frozen Lava Lamp Fun
2. Frozen Lava Lamp Fun
Create your own frozen lava lamp with colorful ice cubes and watch as mesmerizing colored water globules dance in clear oil.
Easy
Investigating Water Surface Tension
3. Investigating Water Surface Tension
Let's explore how salt and temperature affect the surface tension of water!
Medium
Temperature and Water Movement
4. Temperature and Water Movement
Let's explore how hot and cold water affects the movement of water!
Easy
The Effects of Salt and Sugar on Water
5. The Effects of Salt and Sugar on Water
Have you ever wondered what happens when you add salt or sugar to water? Find out in this science project!
Hard
Investigating Water Loss in Plants
6. Investigating Water Loss in Plants
Let's explore how much water plants lose through transpiration and see if bigger leaves mean more water loss!
Medium
One Minute Spaghetti
7. One Minute Spaghetti
Science makes it possible to cook spaghetti in just a minute! Soak it first, then cook in a flash. Save the planet while enjoying your favorite dish!
Easy
Dissolving Tablets Quickly
8. Dissolving Tablets Quickly
Do you want to find out how to make Alka-Seltzer tablets dissolve faster? Join us in this science project to find out!
Medium
Gatorade vs. Water: Pulse Rates
9. Gatorade vs. Water: Pulse Rates
Does Gatorade give kids more energy? Find out by testing the pulse rates of seventh graders while exercising after drinking Gatorade or water!
Medium
Pollution and Water Depth
10. Pollution and Water Depth
Dive deep to discover how water pollution changes with depth!
Hard
Does Water Temperature Affect Tornado Size?
11. Does Water Temperature Affect Tornado Size?
Can you figure out how water temperature affects the size of a tornado? Join us in this experiment to find out!
Hard
Splitting Water with Electricity
12. Splitting Water with Electricity
Learn how to use electricity to split water into hydrogen and chlorine gas!
Hard
Singers and Cold Water
13. Singers and Cold Water
Do singers sound better after drinking cold water? Find out in this fun science project!
Easy
Can Peanuts Heat Water?
14. Can Peanuts Heat Water?
Have you ever wondered if peanuts can be used to heat water? Find out in this fun science project!
Hard
Crushing the Can
15. Crushing the Can
Have you ever wondered what would happen if you put a boiling hot can in cold water? Find out in this science project!
Medium
Slowing Ice Melting with Reflective Containers
16. Slowing Ice Melting with Reflective Containers
Can you keep ice from melting without a cooler box? Find out how reflective containers can help!
Medium
Bacteria in Water Coolers
17. Bacteria in Water Coolers
Is the water from a water cooler really more bacteria-filled than tap water? Find out in this science project!
Hard
Boiling Point of Water
18. Boiling Point of Water
Let's explore how the boiling point of water changes in different conditions!
Medium
Plant Growth and Water
19. Plant Growth and Water
Let's find out how much water plants need to grow healthy and strong!
Easy
Exploring Life in Water
20. Exploring Life in Water
Take a closer look at the amazing creatures living in a drop of water from a lake or pond!
Medium
Water Strider Challenge: Make a Bug Walk on Water!
21. Water Strider Challenge: Make a Bug Walk on Water!
Can you make a pipe cleaner foil bug walk on water? Find out with this engineering challenge by building your own water strider and exploring the science of surface tension.
Medium
Keeping Water Warm
22. Keeping Water Warm
In this science project, you will compare the thermal insulation of air, sand, and Styrofoam to see which one can keep water warm the longest.
Hard
Testing Water Contamination
23. Testing Water Contamination
Let's find out if the water near animal pens is contaminated!
Medium
Insulating Boiling Water
24. Insulating Boiling Water
Find out which materials are the best insulators and how they affect the temperature of boiling water!
Medium
Comparing Water Repellents
25. Comparing Water Repellents
Do you want to know which water repellent works best? Find out by comparing Rain-X and Aquapel in this science project!
Medium
Sweetened Water Viscosity
26. Sweetened Water Viscosity
Let's explore how adding sugar to water affects its viscosity!
Hard
Solar Water Disinfection
27. Solar Water Disinfection
Learn how to make water safe to drink using sunlight and plastic bottles!
Hard
Testing Water Pollution
28. Testing Water Pollution
Let's find out how much pollution our local bodies of water can take before it becomes unsafe!
Hard
Investigating Water Pollution
29. Investigating Water Pollution
Are urban areas more polluted than rural areas? Join us as we compare two creeks flowing from the same snowpack to find out!
Hard
Investigating Acid Rain
30. Investigating Acid Rain
Let's explore how acid rain affects our environment in a fun and creative way!
Easy
Investigating Water Pollution
31. Investigating Water Pollution
Come explore the wetland and discover the different types of pollution that can affect the water and the plants and animals that live in it!
Easy
Testing Lead Content in Drinking Water
32. Testing Lead Content in Drinking Water
Let's find out if older houses have more lead in their drinking water than newer houses!
Medium
Clean Water Filtration
33. Clean Water Filtration
Learn how to keep our water clean and safe with this fun science project!
Medium
Purifying Water: Which Method is Best?
34. Purifying Water: Which Method is Best?
Are you curious about which method of water purification is the most efficient? Join us as we explore the differences between filtration, distillation, and solar pasteurization!
Medium

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