Conduction, Convection, & 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, such as light or infrared radiation, and does not require a medium.

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 a metal spoon getting hot when placed in a hot soup.

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 warmth from the sun on your skin.

Front

How does heat transfer in a vacuum?

Back

In a vacuum, heat transfer occurs only through radiation, as there are no particles to conduct or convect heat.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, leading to convection currents.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.