This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

In this experiment we will be determining whether birds prefer certain colors of seed.

Find out whether matte or shiny nail polish lasts longer.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

This science fair project idea compares biodiversity between drops of water.

The purpose of this science fair project is to build a basic radio.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

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

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 teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

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.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Science fair project that examines condensation and the conditions needed in order for dew to form.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

This science fair project idea examines the reason boats are shaped and engineered.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

In this project students experiment with making music using only glasses of water.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.