Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Science fair project that examines the effects of soap on the surface tension of water. How does soap affect the surface tension of water?

This experiment examines if space objects become round after reaching a certain mass.

Science fair project that demonstrates how a rainbow forms, by using water to split white light into its many colors.

Science fair project that explore how compound motion works by examining how gravity is affected by horizontal force.

Science fair project which identifies the most effective insulator that you could use to make a winter coat by comparing how well cloth and cotton trap heat.

In this science fair project, students test how objects float and sink in liquids of different densities.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Science fair project that demonstrates the process known as refraction, which allows glasses and contact lenses to help people with poor vision.

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

This experiment will examine and precisely measure the amount of sugar in various sodas.

This project tests the hypothesis that dark colors absorb more heat than light colors.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This classic children's game demonstrates how sound travels through air vs. through a solid.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

This science fair project idea lets you can create your own Faraday Cage!

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

Science fair project that examines the relationship between the size of a bubble and how quickly it falls. What is the correlation?

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

This conservation of energy demonstration shows why the first hill is the highest on a roller coaster. Learn more about potential and kinetic energy!

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.