Conduction, Convection and Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through a material without the movement of the material itself, typically occurring in solids.

Front

What is convection?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum, such as heat from the sun.

Front

In which direction does heat flow?

Back

Heat always flows from a hotter substance to a colder substance.

Front

What is an example of conduction?

Back

An example of conduction is when a metal spoon gets hot after being stirred in hot coffee.

Front

What is an example of convection?

Back

An example of convection is the circulation of warm air in a room heated by a radiator.

Front

What is an example of radiation?

Back

An example of radiation is feeling warmth from a campfire or the sun without direct contact.

Front

How does heat transfer in solids?

Back

In solids, heat transfer occurs mainly through conduction.

Front

How does heat transfer in fluids?

Back

In fluids, heat transfer occurs mainly through convection.

Front

What is the role of temperature in heat transfer?

Back

Temperature differences drive heat transfer; heat moves from areas of higher temperature to areas of lower temperature.