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This science fair project idea compares biodiversity between drops of water.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

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.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science fair project idea investigates how the shape of an object affects drag.

Find out which type of sponge holds the most water.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Find out whether packaged seeds actually do expire in this new science fair project idea.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

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

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

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

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

The objective of this science project is to determine the length of time for different seeds to germinate.