Measuring Heat Transfer

The transfer of heat energy can be observed and measured using a thermometer to record the temperature as it changes. On most common thermometers, the red liquid inside of a glass tube will rise as the temperature increases.

Fahrenheit Scale

In the United States, the Fahrenheit scale is commonly used to measure temperature. On the Fahrenheit scale, water’s freezing point is 32℉ and its boiling point is 212℉.

Celcius Scale

Scientists, including those in the United States, use the Celsius scale to measure temperature. On the Celsius scale, water’s freezing point is 0℃ and boiling point is 100℃ .

During investigations using thermometers, keep in mind the following tips:

1. Most thermometers are made of glass and should be handled with care. If a thermometer breaks, an adult should dispose of the broken glass immediately in the proper container.

2. Holding the bulb end of the thermometer will add heat from your hands and could result in an inaccurate temperature reading.

3. When measuring the temperature of an object, the bulb end of the thermometer should touch the object.