How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Students will investigate the illumination durations and intensities of different luminous substances of different colors of the spectrum.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

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.

Construct batteries that make electricity from fruits with this fun science fair project.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Science fair project that determines how we can change potential energy into kinetic energy.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

The goal of this science fair project is to identify the galactic center of the milky way using globular clusters, as found through Google Earth.

This middle school project examines the strength of horizontal versus vertical pointing eggshells.

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 goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.