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.

This science fair project idea examines the reason boats are shaped and engineered.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Find out whether a longer airplane will fly farther or a wider paper airplane.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

This science experiment tests if dog saliva can really help heal wounds.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

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

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

This science fair project idea determines if the temperature of rubber effects how high it bounces.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.