Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

In this science fair project caffeine will be extracted from Gunpowder Green Tea, illustrating the isolation of a naturally occurring product from a plant.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This science fair project idea explores if objects dropped from a high distance will equal a greater impact force than the object dropped from a low distance.

Test whether cutting up meats will make it cook faster than just cooking it whole.

Evaluate gender differences in processing visual information.

This project will explore whether people are emotionally susceptible to suggestions of both humor and sorrow.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

This science fair project idea determines if a particular chemical has an effect (increase or decrease) on the heart rate of Daphnia.

Science fair project that explores the natural process of limestone formation.

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

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

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

Design a livable building that functions without electricity. Consider necessities, comforts and entertainment. Build a scale model of your design.

Research historic methods of food preservation. Analyze alternative recipes and techniques of food preservation. Document success with photographs.

The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.

The purpose of this science fair experiment is to investigate whether the color of your hair affects how much static electricity is carried.

The project determines which laundry detergent is best for cleaning clothes.

This science fair project idea investigates whether air has mass and weight.

The project determines which type of birds prefer which type of birdseed.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

Science fair project that explains and demonstrates the parallax principle.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

This project examines whether corked bats truly make a ball travel farther than wooden bats that haven't been altered.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

It's the day before the test, and you still have a ton to memorize! Sound familiar? Test memorizing techniques to help yourself out next time.