Heat Transfer

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 main methods of heat transfer?

Back

Conduction, convection, and radiation.

Front

Define conduction.

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat by the movement of fluids (liquids or gases) due to differences in temperature and density.

Front

Explain radiation in the context of heat transfer.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, and does not require a medium.

Front

How does energy flow between objects of differing temperatures?

Back

Energy flows from the object with a higher temperature to the object with a lower temperature.

Front

What happens to the temperature of a warm object when it is in contact with a cooler object?

Back

The temperature of the warm object decreases as it loses heat to the cooler object.

Front

Can conduction occur in empty space?

Back

No, conduction requires direct contact between materials.

Front

What is an example of convection in everyday life?

Back

An example of convection is the warm air rising and cooler air moving in to replace it, such as in a room heated by a radiator.

Front

What is the role of the sun in heat transfer on Earth?

Back

The sun transfers energy to the Earth through radiation, warming the air and land.