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

Find out whether a longer airplane will fly farther or a wider paper airplane.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

The purpose of this science fair project is to build a basic radio.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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

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 how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

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

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

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.

Find out which type of sponge holds the most water.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Discover how and which salt melts ice the quickest.

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

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

In this fun experiment, we'll find out how color affects heat absorption!