Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Determine whether people can actually taste the difference between âhealthyâ cookies and the traditional version.

This experiment will explore the possibility of a connection between lunar cycles and how humans are affected.

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This science fair project teaches students the differences between fruits and vegetables.

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

This experiment uses Rosenberg's Self Esteem Scale to evaluate if there is a correlation between family size and self esteem.

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

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

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

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

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

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

Check out this cool science fair project idea to explore the relationship between pulse rate and blood pressure in healthy people.

This project compares the national anthems of several different countries to determine if there is a correlation between tempo and a country's latitude.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

This science fair project idea explores discover whether there are any patterns or trends in the memories between different genders.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

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

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Science fair project that examines the relationship between the size of a bubble and how quickly it falls. What is the correlation?

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.