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

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

Encourage your child to compare and contrast a wide variety of autumn-themed items by weighing various objects and recording their findings.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

This measurement activity uses feet to compare objects, but not the ones found on rulers and measuring sticks...the feet on your child's own body!

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

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

Help your preschooler grasp the concept of ordering and sequence while teaching him valuable vocabulary with simple activities around the house.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

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 science fair project idea determines which flower lasts the longest.

Introduce the idea of measuring weight to your preschooler or kindergartener by making a fun and easy-to-use bungee scale to weigh household objects.

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

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

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

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

Check out this fun science project to explore the relationship between solubility, drug absorption, and time required for a drug effect to become apparent.

Learn about emulsification and bile's roles in digestion, and investigate how the digestive enzyme lipase breaks down lipids.

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

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.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This project concerns activity happening millions of miles away, on the sun.

This project examines the affect of temperature on viscosity and surface tension of different liquids.