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This science fair project idea investigates the relationship between memory and age.

Measure the porosity of rocks by submerging them in water. Measure how much water each rock "drank," by measuring the difference in water volume.

This experiment examines if space objects become round after reaching a certain mass.

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

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

This science fair project examines whether ocean water can be made safe to drink.

This science fair project idea tests the efficiency of short term memory.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

The objective of this sociologically-inclined experiment is to evaluate whether kids' toy preferences are hardwired or develop as they grow.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

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

Explore scientific concepts with this experiment that introduces kids to the scientific method!

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

This experiment evaluates whether a personâs dominant hand is more sensitive than their non-dominant hand.

This experiment will evaluate if chewing gum affects students' test performance.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.