This experiment examines whether storing your orange juice at different temperatures affects its acidity.

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

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

This experiment investigates if stress alters body temperature.

This science fair project idea discovers the effect of (high) heat on animal cells.

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

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

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

This science fair project investigates how temperature of a room affects the burn rate of a candle.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

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

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

Evaluate whether people can raise the temperature of their finger using the power of their thoughts.

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

This project explores what happens to a rubber band when it is heated and cooled.

Solve the mystery of the unpoppable balloon in this 7th grade science experiment that demonstrates the process of heat transfer.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Measure temperature change over time using a variety of insulation materials. Be creative with insulation materials: scarves, yarn, socks, feathers, oil, etc

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

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

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

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

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.