This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Explore the relationship between personality traits and birth order effects.

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

This science fair project idea demonstrates that plants give off water.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Discover the interactions of synthetic dyes and natural dyes on natural and artificially-made fabrics.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

This experiment investigates whether the Ranschburg Effect is observed more frequently in older or younger adults.

In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

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.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Science fair project that determines what percentage of air is made up of oxygen by examining the chemical reaction between oxygen and rust.

What kind of fabric holds dye best? How can you improve a dyed fabric's colorfastness? In this colorful project, test colorfastness using mordants and bleach.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This study observes plants, insects and an animal living in proximity to a known source of EMF.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

This science project allows students to study the psychology of happiness.

Science fair project that determines the correlation between wind direction and subsequent weather patterns.

This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.