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.

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.

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

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This science fair project idea investigates whether plants can survive being frozen.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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

This science fair project idea determines if the color of light affects the growth of plants.

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

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

Demonstrate how to tell the age of an egg without having to crack it open.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This science fair project idea determines the most effective method of preserving food.

This science research project challenges students to think of more effective lobster farming methods.

This science project allows students to study the psychology of happiness.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

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

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.