This project examines how temperature affects the volume of gas in balloons.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

Test whether cutting up meats will make it cook faster than just cooking it whole.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

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 for middle school students to learn about the effects of temperature on the density of a gas such as air.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

In this experiment you will become familiar with the properties of dry ice while creating interesting effects like ice bubbles!

Explore the wattage of microwaves in relevance to cooking time.

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

This project explores whether music affects the growth and health of plants.

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

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

The objective of this experiment is to evaluate the effects of acid rain on plants.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

This study observes plants, insects and an animal living in proximity to a known source of EMF.

Analyze competed scientific studies to determine the effectiveness of ancient remedies. Create a chart that illustrates the effectiveness of these treatments.

Science fair project that cultivates slime mold and monitors the stages of its development.

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

This science fair project idea explores whether dry ice will cool a beverage faster than wet ice.