Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This science fair project idea's objective is to understand the concept of air pollution and examine the quality of air in our environments.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

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

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

This experiment investigates whether the primacy effect is observed more frequently in specific populations of people.

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

Science fair project that explains and demonstrates the parallax principle.

This science fair project examines how seeds hitchhike on animals and clothing.

Describe the lives of commercially raised chickens. Contact local chicken farmers for information and advice. Write a detailed report about farming techniques.

This middle school project examines the strength of horizontal versus vertical pointing eggshells.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

Learn about the anatomy of the autonomic nervous system and its relationship to the rest of the body.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This science fair project idea determines exactly how much of an effect road grade has upon a cyclistâs speed.

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

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

This science fair project idea discovers the effect of (high) heat on animal cells.

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

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

Find out whether putting something on top of a plant will inhibit its growth.

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

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Science fair project that explores the variety of webs that spiders weave and collect specimens for identification.

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

This science fair project idea produces consumable fresh water from salt water through desalination.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.