Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Science fair project that demonstrate how abrasions are formed on rocks in nature and the variations between types of rocks.

This social science experiment endeavors to determine whether certain types of animals provide greater physical and mental health benefits to their owners.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

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

Study and categorize the functions and types of genes. Run gene experiments chosen from links. Analyze data, explain ideas in a detailed report.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

The objective of this experiment is to evaluate which types of people are most impacted by the McCollough effect.

This project investigates several commercially decaffeinated tea types (black, green, oolong, white) for the presence of detectable traces of caffeine.

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

Check out this fun science fair project idea to explore how building on different types of soil affects the relative stability of buildings in an earthquake.

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

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

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This experiment will test whether people are better auditory or visual learners and if there is a link between gender and either of these learning types.

This science fair project determines whether the types of plants growing in a Pacific Northwest rain forest environment are influenced by the soil acidity.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

This science fair project will go beyond the simple definition of conservation to explore the different facets of what conservation means.

Science fair project that examines the biodiversity of ant populations in various locations.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.