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This science fair project idea examines if there is a reason that musical notes are at the pitches they are.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

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

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

The goal of this science fair project is to attempt to build a perpetual motion machine and analyze the Laws of Thermodynamics.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

The objective of this science project is to investigate patterns in fingerprints among family members.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science fair project idea provides evidence that air is everywhere and takes up space.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This cool middle school science fair project idea helps students explore the role phototropism plays in the growth of green plants.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Plants and light seem to be good buddies, but how far does the friendship really go?

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.