In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project explores discover whether the acidity of sour candy is comparable to that of battery acid.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

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

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Will people perceive your intelligence differently depending on your hair color? Find out in this science fair project idea!

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

This high school science fair project investigates if small changes in your diet alter the pH of your saliva.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

Science fair project that determines whether moths are attracted to one color of light more than others.

This science fair project compares the abilities of men and women to understand subtle communication through body language.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

This science fair project idea explores whether the types and brands of faucet filters are relevant to their performance.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

In this science fair project, students will learn how to calculate the formula for the thermal decomposition of potassium chlorate.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Science fair project that demonstrates the process known as refraction, which allows glasses and contact lenses to help people with poor vision.

Science fair project that determines whether wireless networks damage living plants. Are WiFi radiation hazardous to your health?