The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Science fair project that models the subterranean movement of water, using Darcy's Law. How can this information be used in hazardous material spills?

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This project examines the concentration of dissolved oxygen in water, with and without oil.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

introduction to organic chemistry. study what happens when polymer molecules are mixed with borax solution.

This science fair project idea measures physical dexterity as a function of temperature.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

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

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

This science fair project idea investigates whether plants can survive being frozen.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

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.

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.