The objective of this experiment is to evaluate which types of people are most impacted by the McCollough effect.

This science fair project idea explores if people with cool skin tones prefer cool colors and people with warm skin tones prefer warm colors.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

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

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

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.

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.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

This science fair project idea investigates whether rocks containing geodes can be determined from the outside.

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

Check out this cool science fair project idea to explore short and long term memory and whether there is gender differences in memory.

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

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

Science fair project that models the subterranean movement of water, using Darcy's Law. How can this information be used in hazardous material spills?

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.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

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

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

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

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

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

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

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.

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