Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Check out this cool science fair project idea on spectrum spinners and investigate how certain color combination can produce other colors.

Study history of aerodynamics of arrow design to create a perfect arrow. Test arrows by shooting at an archery target.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

Consult astronomers for opinions and advice. Devise a mathematical argument regarding the probability of other planets supporting extra-terrestrial life.

Find out whether matching resonant frequencies can cause objects to shatter.

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

This science fair project idea investigates whether air has mass and weight.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

This science fair project investigates why the number of visible stars changes from place to place.

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

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

This science fair project ideaexplores whether cooking food destroys potential vitamin levels.

Science fair project which uses a camera to observe the surface of a balloon in the moment of its explosion.

This science fair project idea determines which colors are more difficult to read at a distance.

This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This science fair project discovers the properties and uses of sand and develops new or improved methods, techniques, or products involving sand.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Free science fair project idea examining how different types of water affect plant germination and growth.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

Find out whether matte or shiny nail polish lasts longer.

This experiment will explore whether adding different substances to a gel affects its strength.

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

Determine how wind speed affects the stability of a kite and the ease of getting it into the air.