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Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

Is It Safe To Eat Something Dropped On The Floor As Long As You Pick It Up Within 5-Seconds? 

This project examines whether people's taste perception is influenced by what they see.

Taste Perception

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Principles of Air Pressure

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

How do Plants Absorb Water?

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

How Does Sound Travel?

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Passive Solar Heating

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

What Animals are Most Popular? A Data Analysis Project

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

The Psychology of Feeling Watched

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Albedo

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

How to Demagnetize a Magnet

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

Exploring Erosion, Sediments and Jetties

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Fastest Way to Cool a Soda

This science project teaches students to classify different shapes of leaves.

Shapes of Leaves

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

The Wonderful World of Weeds

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

A Thunderous Sound

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Do Screen and Text Color Affect Retention?

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

Dig This: Biodegradation

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Growing Bacteria

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

What Lives in the Air Conditioner?

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Text on Screen vs. Type on Paper: Which is Easier to Remember?

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Most Popular Soda

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Cats & Dogs

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

Fresh Food vs. Frozen Food

Windmills have been around for generations to grind food and create energy. During this challenge, students will use various materials and put their engineering skills to work by creating their own windmills.

Wacky Windmill Challenge

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Eye Witness, You Witness

This science fair project teaches students about wilting and browning of salad greens.

Why Do Greens Turn Brown?

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Ping Pong Ball Anemometer

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Don't Rock the Boat

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Whatever Floats Your Boat

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Homemade Butter

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