Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Check out this cool science fair project idea on spectrum spinners and investigate how certain color combination can produce other colors.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

This science fair project investigates why the number of visible stars changes from place to place.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

This science fair project idea determines effective strategies to help students stay awake and attentive.

This science fair project idea studies the differences in gender perception between people.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

The goal of this science fair project is to demonstrate current methods of detecting counterfeit money, in particular counterfeit detection pens.

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 science fair project idea examines which type of insulation holds in the most heat.

Discover which absorbent material is the best; the Shamwow, paper towels, or cotton towels.

Science fair project that examines oxidation, reduction and chemical indicators by testing for the presence of the iodide in salt.

This experiment evaluates if the lighting in a room affects the speed at which test subjects perform mental tasks.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

This research project teaches students about synesthesia, a neurological condition that causes sensory overlap.

Science fair project that measures the relative times it takes a plastic bag and a biodegradable plastic bag to decompose.

The goal of this fun science experiment is to explore the limitations of sight and learn working of the human eyes.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

This project explores whether similar type movie scenes are accompanied by music with similar characteristics.

This project explores ways to prevent static electrical shocks.

Demonstrate the principle of jet propulsion in this science fair project by building a rocket from household materials.