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Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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

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

This experiment investigates if small changes in your diet can alter your basal body temperature.

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.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

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.

Explore the wattage of microwaves in relevance to cooking time.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

Observe if dissolved aspirin will help plants grow healthier and faster in this science fair project idea.

This experiment investigates if stress alters body temperature.

Cookie catastrophe! In this project you will determine if different types of cookie sheets can cause cookies to bake differently.

This project compares different liquids and the freezing, melting and boiling points of liquids.

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

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

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

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

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

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

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