This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

In this project children practice the scientific method while playing with puffy paint.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Find out whether a longer airplane will fly farther or a wider paper airplane.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Learn whether writing things down really makes things easier to remember.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

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

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This science fair project idea investigates if fats add to the flavor of food.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This science fair project idea examines whether boys and girls differ in reflexes.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.