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Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

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 which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

This science fair project idea examines the reason boats are shaped and engineered.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

In this science fair project, we will test how different kinds and shades of hair respond to bleach.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science fair project introduces children to static electricity and the idea that electricity is more than lights and plugs.

This science fair project idea uses the process of chemical weathering to change a mineral.

Research different measurement systems, design your own new or improved system that can measure something difficult to measure with traditional systems.

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.

Experiment with fermenting various fruits, grains or syrups. Describe and illustrate the fermentation process in a detailed report.

The goal of this project is to create an exciting topographical map out of dough.

Discover the interactions of synthetic dyes and natural dyes on natural and artificially-made fabrics.

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

Find out whether matte or shiny nail polish lasts longer.

This science fair project investigates why the number of visible stars changes from place to place.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Research fruits and their ripening stages, follow and document the different stages. Analyze what causes fruit to continue ripening after being picked.

Consult astronomers for opinions and advice. Devise a mathematical argument regarding the probability of other planets supporting extra-terrestrial life.

In this experiment you will use plastic and magnets to test your local soil composition.

Check out this cool and free middle school science fair project idea on how to make a solar oven.