This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

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 is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Will the shape of an ice cube impact how fast the ice melts?

This science fair project idea deals with the qualities of shade on a sunny day.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

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

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

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

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

This science fair project investigates why the number of visible stars changes from place to place.

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

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science experiment tests if dog saliva can really help heal wounds.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

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

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.