This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

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 that tests the effects of temperature change on the reactivity of the catalase enzyme.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Learn about emulsification and bile's roles in digestion, and investigate how the digestive enzyme lipase breaks down lipids.

This science fair project idea tests the effect of heat- at varying temperatures- on the viability of biological enzymes.

This science fair project determines which type of physical activity most improves memory.

This project concerns activity happening millions of miles away, on the sun.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

In this project, you will observe and record changes in sunspots over two weeks.

Science fair project which determines whether your current calorie intake will cause you to lose or gain weight over time.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

Test of the effect of exercise on rote memory. Prepare a single list of 40 randomly chosen words. Have volunteers recall as many words as possible.

Science fair project that examines the biodiversity of ant populations in various locations.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

This project will explore whether music influences physical endurance.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

This social science experiment endeavors to determine whether certain types of animals provide greater physical and mental health benefits to their owners.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

This science fair project idea demonstrates the process of land erosion.

Science fair project that determines whether moths are attracted to one color of light more than others.

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

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

This science fair project idea identifies trees using a dichotomous key.