This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this activity, learners will discover how to make a basic water filtration system using common materials found around the house or outside.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

What do a pool, a raft and a golf club have in common? They are all integral ingredients in the fun game of Aqua Golf, a great activity for kids of all ages.

This science fair project will help students learn about non-vascular plants, such as mosses.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Bring the fun carnival game of ring toss to your home pool with this watery twist on the classic game.

This twist on the classic game of freeze tag spells fun for your fourth grader--and the whole family!

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

This science fair project idea explores how length affects the weight a bridge can hold.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

In this project students experiment with making music using only glasses of water.

Use pepper and soap to discover some fun facts about the properties of water.

Help your kindergarten science maven explore the water cycle without getting everything wet.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

A simple science experiment exploring the physics of water pressure that's been amazing people since Medieval times.