In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

This science fair project idea studies whether a religious sleeping schedule relates to a higher IQ.

Does "short circuit" mean that electricity takes a short course? This science experiment provides steps to help you get to the bottom of this science mystery.

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

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.

This science fair project idea examines whether music has an effect on a person's ability to complete a simple task that requires concentration.

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

This experiment evaluates whether frequent texters have better finger dexterity compared to people that rarely use text messaging.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Evaluate if people are more influenced by video or audio advertising.

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.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

Science fair project that tests how well various sunscreens protect skin from the sunâs ultraviolet radiation by measuring their effect on sun-sensitive paper.

Explore the properties of light and color using photographic filters. Take pictures of color spectrum, compare results of different filters.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

The objective of this experiment is to find out if cooked beans grow faster, if at all, than uncooked beans.

Find out whether packaged seeds actually do expire in this new science fair project idea.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

Science fair project that tests whether cats have a preference for organic food.

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

This science fair project idea tests the efficacy of both synthetic and natural antibiotics.