Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

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 idea examines liquids of different densities.

This science project allows students to study the psychology of happiness.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

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

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

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.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Plants and light seem to be good buddies, but how far does the friendship really go?

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

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

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.