In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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

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

This science fair project examines how carnivorous plants digest insects, and whether the plant can use nitrogen in the soil to compensate for lack of insects.

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science fair project idea determines which flower lasts the longest.

Find out whether putting something on top of a plant will inhibit its growth.

In this experiment, you will evaluate whether or not a diet that is supplemented with "brain-enhancing" foods can help improve memory.

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

This science fair project idea investigates food preference of birds.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

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.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.