The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Examine the effect of pressure on carbonation in soda.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

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

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

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

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

In this science project, the center of gravity is explored.

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

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Find out whether packaged seeds actually do expire in this new science fair project idea.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

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

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

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

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

This science project idea examines the effect of microwaving on various objects.

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