Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

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

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

This science fair project idea explores substances that cause a bubble to last longer.

This science fair project idea investigates if fats add to the flavor of food.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This science fair project idea investigates the hardness property of minerals.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

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

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

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

In this science fair project, students create their own miniature salt flats at home.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.