Heat Transfer Methods

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

Front

What are the three methods of heat transfer?

Back

Conduction, convection, and radiation.

Front

How does conduction occur?

Back

Conduction occurs through stationary matter by physical contact, transferring heat from a hotter object to a cooler one.

Front

Give an example of conduction.

Back

Heat transferred from the burner of a stove through the bottom of a pan to food in the pan.

Front

How does convection occur?

Back

Convection occurs through the macroscopic movement of a fluid, such as air or water.

Front

Give an example of convection.

Back

Heat transfer in a forced-air furnace or in weather systems.

Front

How does radiation occur?

Back

Radiation occurs when electromagnetic radiation, such as microwaves or infrared radiation, is emitted or absorbed.

Front

Give an example of radiation.

Back

The warming of Earth by the Sun or thermal radiation from the human body.

Front

What is the role of temperature difference in heat transfer?

Back

Heat transfer occurs solely because of a temperature difference, and the greater the temperature difference, the faster the heat transfer.

Front

What is the significance of Figure 1.7.1 in the text?

Back

It illustrates how heat transfer occurs by conduction, convection, and radiation in a fireplace scenario.