Study how liquids separate into layers by creating a liquid gradient, different density liquids separate into layers in a graduated cylinder.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

This science fair project idea explores whether the color of surroundings affects human mood.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

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

This project explores what happens to a rubber band when it is heated and cooled.

This science fair project idea explores if objects dropped from a high distance will equal a greater impact force than the object dropped from a low distance.

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

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

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.

Use pepper and soap to discover some fun facts about the properties of water.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

This experiment will examine and precisely measure the amount of sugar in various sodas.

This experiment explores the trend of reactivity in the alkaline earth metals as you go down the second column of the periodic table of elements.

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

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Time to look at our faces! Are they symmetrical or asymmetrical? Find out in this science fair project idea.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

Science fair project that determines what neurons are, what they do and compiles this vital information in an illustrated book.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Research what is known about Alzheimer's disease and its treatment, and then prepare a script for television to educate the public.