Determine if gender affects the ability to identify different smells.

Research currently available fuel sources, and fuel manufacturing and processing techniques. Propose an alternative fuel source.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Get a better understanding of water content by dehydrating carrots.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Make a list of items that need repurposing such as e-waste, batteries and mattresses. Invent your own original repurposed design.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

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

In this science fair project, students use the streak test to tell minerals apart from each other.

Find out whether people within a family tend to have matching fingerprints.

This science fair project idea investigates the hardness property of minerals.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Is there really such a thing as healthy gum? Students will learn what factors in chewing gum contribute to healthy teeth in this exciting science fair project.

Polymers remove oil from contaminated waters. The purpose of this science project is to test the effectiveness of a polymer in cleaning up an oil spill.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This fun science project explores the climate change over the course of the history of Earth and helps construct a diorama representing a geologic time period.

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

Test of the effect of exercise on rote memory. Prepare a single list of 40 randomly chosen words. Have volunteers recall as many words as possible.

Science fair project that explains and demonstrates the parallax principle.

Thoroughly research image search engines. Consider possible improvements for visual search engines. Help design better image-matching engines.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This science fair project idea studies past and current fads and trends.

Learn about the growing app design field by designing a new or improved app for smartphones.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

A fun, life science sxperiment idea idea involving strategies for keeping birds away from crops using a distress call. What kind of distress call works best?

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

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