In this experiment we will be determining whether birds prefer certain colors of seed.

This science fair project idea identifies and understands adaptations in birds.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This science fair project idea explores edible things you didn't know you could eat.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

This science fair project idea designs safe bicycle routes using GPS.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

This biodiversity project examines the biodiversity in your own backyard.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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

This science fair project idea determines how your body responds to allergies.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.