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

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

This science experiment tests if dog saliva can really help heal wounds.

Check out this dice game perfect for teaching your savvy kid the fundamentals of probability.

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

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

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.

Science fair project that determines whether mass and weight are the same or different.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

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

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

This science fair project teaches students about wilting and browning of salad greens.

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

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