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This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This cool middle school science fair project idea helps students explore the role phototropism plays in the growth of green plants.

Research basic components of vacuum cleaners, consult vacuum cleaner manufacturers for advice. Design vacuum with attachments that change automatically.

Get this cool middle school science fair project idea on how to conduct a flame test to detect the presence of certain metals in chemical compounds.

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

This science fair project examines the different composition of fungi and plants.

This science fair project idea investigates food preference of birds.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Compare the amount of ozone in various locations with this science fair project that will have your kid create her own ozone strips!

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

Take a dive into the candy jar with this yummy science experiment.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

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

Study emulsifiers and learn how they are used in food science, medicine, soaps and cosmetics. Identify which materials are created using an emulsifier.

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

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

This science fair project idea explores which fruit molds the fastest.

Research currently available fuel sources, and fuel manufacturing and processing techniques. Propose an alternative fuel source.

This science fair experiment organizes made-up elements to simulate Mendeleev when he made the periodic table of elements.

Check out this fun leaf chromatography science fair project idea for middle school students and discover the hidden pigments in leaves.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.