This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

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

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

This science fair project examines how seeds hitchhike on animals and clothing.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

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

In this investigation, an oil spill is simulated in a jar to observe the damage that oil spills have on the ocean and ocean life.

In this science fair project, students use the streak test to tell minerals apart from each other.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

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

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

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

Start your toy engines -- this is going to be a fast and friction-filled race!

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

In this project children practice the scientific method while playing with puffy paint.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!