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

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.

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

Science fair project which examines how stopping a tomato's ripening process using the enzyme ethylene effects the tomato plant and its reproduction cycle.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

This experiment will use computers to examine how the famous Mandelbrot set can be manipulated in fractals.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

This science fair project idea demonstrates how our fingers prune when in water.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Devise list of randomly chosen words, test how many words volunteers can remember. Compare results of adults and children. Which have better memories?

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

High school kids learn about fruit fly ethology in this cool lab that determines fruit fly movement and behavior under different conditions. Check it out.

The apparent movement of the sun has been used to keep time since the bronze age. In this science fair project, kids plot solar time against mean solar time.

In this science fair project, students examine how temperature affects sugar transport within a plant.

Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

A fun, life science sxperiment idea idea involving strategies for keeping birds away from crops using a distress call. What kind of distress call works best?

In this project, you will observe and record changes in sunspots over two weeks.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project teaches students to classify different shapes of leaves.

This project compares the national anthems of several different countries to determine if there is a correlation between tempo and a country's latitude.

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.