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Science Fair Project Ideas

Find the physical science and psychology and sociology science fair project ideas you're looking for. Many different science fair projects are available for you to browse through and get ideas for your own science fair project.

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What affects the phases of the moon? In this free science fair project, experiment with how the position of the sun, moon, and earth affects the moon phase.
Determine How the Positions of the Sun, the Moon, and Earth Affect Moon Phases
Physical Science
Middle School
Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?
Sizing Up Marshmallows
Physical Science
Elementary School
This experiment will investigate whether reward or punishment is more apt to motivate people.
Reward or Punishment: Which is the Better Motivator?
Psychology and Sociology
High School
Check out this fun science fair project idea that recreates one of the most significant experiments in which Thomas Young demonstrated that light is a wave.
Explore if Light Behaves as a Wave or a Particle
Physics
Middle School
This project explores whether people's choice of a 'random' number is not as random as it seems.
17: The Most Popular Random Number
Psychology and Sociology
Elementary School
Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.
Rainbow in a Jar
Physics
Second Grade
Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.
Why Doesn't the Ocean Freeze?
Chemistry
Second Grade
Here is a fun science fair project idea for elementary school that explores and demonstrate a total and partial solar eclipse when the Moon covers the Sun.
Shadows: How Can the Moon Cover the Sun?
Physical Science
Elementary School
This simple, free and fun science fair project idea for middle school students helps study the motion of toys and explains how toys store and transfer energy.
How a Toy Stores and Transfers Mechanical Energy?
Physical Science
Physics
This science fair project idea explores the different parts of the human ear and models how the human ear reacts to sound waves.
How Do We Hear?
Physical Science
Elementary School
Attraction? Detraction? The goal of this science fair project is to explore how magnetic fields differ.
How Do Magnetic Fields Differ?
Physics
Elementary School
Check out this fun science fair project idea to determine if the size of a particle affect the rate or speed of a chemical reaction.
Can you Change the Speed of a Reaction by Changing the Particle Size of the Reactants?
Chemistry
Middle School
The objective of this experiment is to test the quality of soil surrounding a gas station to determine if gas stations have a negative effect on the surrounding landscape.
Do Gas Stations Affect the Soil Around Them?
Chemistry
Middle School
Have you ever wondered if the heat from the sun is strong enough to cook food? This science experiment provides step-by-step instructions to help you answer this question.
Solar Hot Dog Cooker
Electricity and Magnetism
Elementary School
This science fair project idea discovers the average time it takes for a person to remember something completely.
How Long Does It Take To Remember Something?
Psychology and Sociology
Middle School

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