Play with balance and simple engineering as you hurry to create a sturdy rock tower.

This science fair project idea provides evidence that air is everywhere and takes up space.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

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

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

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

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

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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

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

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

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

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.