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The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

Learn the anatomical and physiological differences between central and peripheral visual systems.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Test whether spot magnets can help improve the symptoms of an injury.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

Science far project which determines whether the material of a baseball bat affects the distance that the baseball will travel.

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.

This science fair project examines the vein structure (venation) of leaves in order to determine the class of the plant sample.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

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!

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Check out this fun science fair project idea to determine if the size of a particle affect the rate or speed of a chemical reaction.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Check out this fun high school science fair project idea to investigate how the cell membrane regulates what moves into and out of cells.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Create groups of volunteers based on frequency of playing video games. Compare driving records. Analyze data, interpret findings.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

This experiment investigates whether smell can be used to enhance test subjects' memories.