In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Determine if gender affects the ability to identify different smells.

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

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

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

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

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

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

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

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

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

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

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 fair project teaches students the differences between fruits and vegetables.