This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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.

Cleaning can be a chore, but not with this sudsy experiment!

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This project explores ways to prevent static electrical shocks.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Will the shape of an ice cube impact how fast the ice melts?

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

This science fair project idea determines the probability of a coin landing heads or tails.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

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

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

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

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

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.