This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

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.

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

This project explores ways to prevent static electrical shocks.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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

Find out whether putting something on top of a plant will inhibit its growth.

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

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Examine the effect of pressure on carbonation in soda.

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

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Challenge your learner to design and build a city of their own in this creative engineering activity.

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

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

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

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.