Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

This project compares the strength of one, two, and three-ply toilet paper.

This science fair project idea compares biodiversity between drops of water.

This science fair project idea investigates the difference in reaction times between boys and girls.

How powerful is the reaction between baking soda and vinegar? Find out here!

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This science fair project teaches students the differences between fruits and vegetables.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

The science project fair idea explores the interaction between your nose, mouth, and brain when tasting a new food or drink.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.