The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

The goal of this science fair project is to demonstrate the effects of oxidation by writing a message in invisible ink made from lemon juice.

Can cells be frozen? This science fair project provides information to answer this question.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

What happens when "coffee-addicts" miss coffee for 1 day? Find out in this science fair project idea!

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

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

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

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.

This science fair project examines discover whether different formations of deodorant works better for certain skin types.

This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

This science fair project explores discover whether the acidity of sour candy is comparable to that of battery acid.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

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

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

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Will people perceive your intelligence differently depending on your hair color? Find out in this science fair project idea!

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

This high school science fair project investigates if small changes in your diet alter the pH of your saliva.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.