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How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

Science fair project which determines whether your current calorie intake will cause you to lose or gain weight over time.

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.

Determine which video game elevates the heart rate best and burns the most calories.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Monitor the impact learning how to play chess has an academic performance. Divide subjects into two groups compare GPA

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This project concerns activity happening millions of miles away, on the sun.

This science fair project idea determines exactly how much of an effect road grade has upon a cyclistâs speed.

Word color association is just a fancy way to talk about the way we connect colors with words.

Determine how good we are at direct and indirect observation.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Science fair project that examines the biodiversity of ant populations in various locations.

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

Test your friends to find out if you can replicate the placebo effect's incredible results.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

Science fair project that demonstrates how stalagmites and stalactites are formed.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

This science fair project idea explores how water and ice can change the form of rocks.

This project investigates whether chewing gum can help a majority of people with focus and concentration.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.