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 types of heat transfer?

Back

The three main types of heat transfer are conduction, convection, and radiation.

Front

Define conduction.

Back

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

Front

Give an example of conduction.

Back

An example of conduction is a metal spoon getting hot when placed in a bowl of hot soup.

Front

Define convection.

Back

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

Front

Give an example of convection.

Back

An example of convection is warm air rising and cool air sinking in the atmosphere.

Front

Define radiation.

Back

Radiation is the transfer of heat energy through electromagnetic waves without the need for a medium.

Front

Give an example of radiation.

Back

An example of radiation is the heat from the sun warming the Earth.

Front

What causes air circulation in the atmosphere?

Back

Air circulation is caused by the ground being heated by the sun, which then heats the air, causing it to rise.

Front

What is the role of the sun in heat transfer?

Back

The sun provides energy that heats the Earth's surface, leading to conduction, convection, and radiation.