The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

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

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This science fair project idea explores substances that cause a bubble to last longer.

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

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

In this design challenge, your child will create a parachute for a small toy using typical household items.

This science fair project teaches students about wilting and browning of salad greens.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

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.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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.

In this experiment you will replicate the mummification process by making a hot dog mummy.

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

This science fair project idea demonstrates that plants give off water.

In this design challenge, your child will make a bottle rocket using typical household items.