Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?

Check out this fun science fair project idea to explore how building on different types of soil affects the relative stability of buildings in an earthquake.

Kids learn about Brownian motion, diffusion, and how temperature is a key factor affecting the rate of diffusion in this cool science project.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

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.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

This science fair project idea compares biodiversity between drops of water.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

Here's a simple science activity that will help your child better understand how wells bring us water.

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

This science fair project idea determines what household items are good conductors of electricity.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Learn about the beautiful Indian art of Madhubani painting with this fun and creative project.

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.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Engage your children with this fun fall activity that integrates math and science. First, your child will excavate to find leaves. Next, they'll examine them to determine the colors. Then, your child will graph their findings.

Invite your second grader to help you measure and mix these fresh, cool concoctions!

In this science fair project caffeine will be extracted from Gunpowder Green Tea, illustrating the isolation of a naturally occurring product from a plant.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.