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Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

This science fair project idea explores whether white light can be separated into different colors.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This science project allows students to study the psychology of happiness.

This science research project challenges students to think of more effective lobster farming methods.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This science fair project idea explores which fruit molds the fastest.

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

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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

Demonstrate how to tell the age of an egg without having to crack it open.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

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

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

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.