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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 models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Explore the neural and mental mechanisms at play in mental imagery.

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

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Get a cool science project idea on a photovoltaic cell and explore the various factors that affect the energy output of the photovoltaic cell.

The project researches how lubricants affect the mechanical advantage of a pulley.