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

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

In this project, different brands of microwave popcorn are tested and compared.

This science fair project idea produces sounds by creating vibrations using different objects.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

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

This science fair project idea's objective is to understand the concept of air pollution and examine the quality of air in our environments.

In this experiment, the weight of aluminum cans will be compared.

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.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

In this science project, the center of gravity is explored.

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

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.