Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Store bowls of fresh fruit in differently lighted environments. Contrast freshness based on appearance.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Design and build a balloon rocket from an existing design. Think of the ways in which existing designs can be improved, new practical applications

Measure the porosity of rocks by submerging them in water. Measure how much water each rock "drank," by measuring the difference in water volume.

2011 VIRTUAL SCIENCE FAIR ENTRY: The objective of this science fair project is to develop a microcontroller and circuit that can conduct electricity.

Do you think heat can affect a plant's growth rate?

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

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

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

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

Science fair project that demonstrates how stalagmites and stalactites are formed.

Determine whether the relationship between a personâs armspan and height are genetic.

Determine which material produces the strongest static charge.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

Science fair project that determines which types of clouds are best at blocking harmful UV radiation.

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

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

The objective of this science project is to investigate patterns in fingerprints among family members.