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

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

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

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.

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.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

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.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

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

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

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

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

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Test your friends to find out if you can replicate the placebo effect's incredible results.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

In this project, vinegar and salt act as preservatives keeping bacteria from growing in the bouillon mixtures.

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's objective is to understand the concept of air pollution and examine the quality of air in our environments.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.