Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

Examine whether males or females are more likely to have a higher center of gravity.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

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.

Do you think heat can affect a plant's growth rate?

Determine which material produces the strongest static charge.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

Check out this fun science fair project idea to explore how building on different types of soil affects the relative stability of buildings in an earthquake.

Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

Study structure of the lens found in the human eye and determine whether it is concave or convex. Prepare a ray diagram, formulate hypothesis.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

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

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.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

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

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.