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

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

With a clear bottle and a few plastic straws, you can easily make a hummingbird feeder and demonstrate the effects of atmospheric pressure at the same time!

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

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.

What happens when colored beams of light mix? You might be surprised.

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

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

In this science fair project, students create their own miniature salt flats at home.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

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

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

Have your child kick off their summer vacation by making a miniature water slide!