Heat transfer & energy

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

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

Front

Define conduction.

Back

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

Front

Give an example of conduction.

Back

An example of conduction is a metal spoon getting hot when placed in a pot of boiling water.

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 a room.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation.

Front

Give an example of radiation.

Back

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

Front

What happens to heat during conduction?

Back

During conduction, heat moves from an area of higher temperature to an area of lower temperature.

Front

What is the direction of heat transfer?

Back

Heat transfers from an area of high temperature to an area of low temperature.