This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This science fair project idea produces sounds by creating vibrations using different objects.

This science experiment has students test whether a snail moves faster on concrete or dirt.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This project determines what category of person is most likely to be ticklish.

Examine the effect of pressure on carbonation in soda.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Make a backbone model to explore human anatomy and life science.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea explores the different properties of matter.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project idea explores whether talking to a plant will help it grow.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

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

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

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.