What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

This science project examines the thermal properties of several major greenhouse gases.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

This experiment evaluates if people have an accurate perception of how much personal time they spend interacting with technology.

The goal of this science fair project is to identify the galactic center of the milky way using globular clusters, as found through Google Earth.

Science fair project that explains and demonstrates the parallax principle.

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

This science fair experiment examines the relationship between gender, age, and smiling.

Learn the anatomical and physiological differences between central and peripheral visual systems.

This project concerns activity happening millions of miles away, on the sun.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

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

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

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

This experiment will explore whether fractals really repeat themselves infinitely.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

This science fair project collects information on the Internet about yourself and others.

This science fair project idea examines whether music has an effect on a person's ability to complete a simple task that requires concentration.

Science fair project which helps you determine your latitude by using an astrolabe, which measures the angle between the North Star and the horizon.

Create groups of volunteers based on frequency of playing video games. Compare driving records. Analyze data, interpret findings.

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

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Science fair project which determines whether your current calorie intake will cause you to lose or gain weight over time.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

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!