Heat Transfer: Conduction, Convection, & Radiation

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 a material (usually solids) without the movement of the material itself.

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

Define radiation.

Back

Radiation is the transfer of energy in the form of waves or particles through space, without the need for a medium.

Front

What is an example of conduction?

Back

An example of conduction is touching a hot stove and feeling the heat transfer to your hand.

Front

What is an example of convection?

Back

An example of convection is warm air rising and cool air sinking in a room, creating a circulation of air.

Front

What is an example of radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin.

Front

How does thermal energy transfer between two objects at different temperatures?

Back

Thermal energy always transfers from the hotter object to the cooler object until they reach thermal equilibrium.

Front

What happens to the thermal energy of ice when held in a warm hand?

Back

Thermal energy is transferred from the hand to the ice, causing the ice to melt.