Free science fair project idea examining how different types of water affect plant germination and growth.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

This science fair project investigates why the number of visible stars changes from place to place.

Research fruits and their ripening stages, follow and document the different stages. Analyze what causes fruit to continue ripening after being picked.

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

This science fair project ideaexplores whether cooking food destroys potential vitamin levels.

Find out whether matte or shiny nail polish lasts longer.

Science fair project which uses a camera to observe the surface of a balloon in the moment of its explosion.

This experiment will explore whether adding different substances to a gel affects its strength.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

This science fair project idea investigates if fats add to the flavor of food.

Determine how wind speed affects the stability of a kite and the ease of getting it into the air.

Are red apples really sweeter than green apples? The objective of this science fair project is to test the theory with quantitative evidence.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

The goal of this science fair project is to demonstrate current methods of detecting counterfeit money, in particular counterfeit detection pens.

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.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea explores whether the types and brands of faucet filters are relevant to their performance.

This science fair project idea will be examining oxidation and acid rain

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

This science fair project idea explores the different properties of matter.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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.

Examine how the tire treads of a bicycle affect its rolling frictional force. Change tires, test speed performance on different terrains.