This fun science fair project for 8th grade demonstrates what Kepler's 3rd law predicts about a planet's orbital period and its distance from the sun.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

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

This project determines whether hands-on practice, mental practice, or no practice leads to better shooting of free-throws.

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

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

This science fair project idea investigates whether plants can survive being frozen.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

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

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 discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

This science fair project idea determines if the color of light affects the growth of plants.

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

Science fair project that studies how the brain transforms man-made symbols into meaningful concepts.

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

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

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

This science fair project idea determines the most effective method of preserving food.

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

This science project challenges high school students to study the linguistic evolution of text messaging.

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

Examine the impact of insecticides on plant growth.

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

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

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

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

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