This science fair project idea explores how length affects the weight a bridge can hold.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

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

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

This experiment tests which gender is better at catching how a magician performs his tricks.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Construct batteries that make electricity from fruits with this fun science fair project.

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 has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

This science fair project investigates why the number of visible stars changes from place to place.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

Find out whether matte or shiny nail polish lasts longer.

This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.

The project investigates how friction affects motion by using different surface textures.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

This science fair project idea determines the most effective method of preserving food.