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.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

Have your child kick off their summer vacation by making a miniature water slide!

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

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

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

In this science fair project, students use the streak test to tell minerals apart from each other.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Start your toy engines -- this is going to be a fast and friction-filled race!

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

Find out which type of sponge holds the most water.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

How powerful is the reaction between baking soda and vinegar? Find out here!

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

The goal of this project is to create an exciting topographical map out of dough.

This science fair project idea examines which type of insulation holds in the most heat.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This experiment investigates the relationship between the temperature of a candle and its burn rate.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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