Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Test whether plants can grow without sunlight and water.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Have your child kick off their summer vacation by making a miniature water slide!

Find out which type of sponge holds the most water.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Discover whether a metal will expand under hot water.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

Discover whether cold or hot water from the faucet will boil faster on the stove.

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.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

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?

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

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.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

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