What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Discover whether a metal will expand under hot water.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

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

Learn whether writing things down really makes things easier to remember.

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

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Find out which kind of bubble wrap fares best when put in impact.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

In this science fair project you will make a model of a cell membrane using very simple material.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

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

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.