Heat Transfer

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) where warmer areas of a liquid or gas rise and cooler areas sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, and does not require a medium to travel.

Front

What happens to the temperature when two substances at different temperatures come into contact?

Back

Heat flows from the hotter substance to the colder substance until thermal equilibrium is reached.

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.

Front

How does a metal spoon get warm in hot soup?

Back

The handle of the metal spoon warms up due to conduction, as heat is transferred from the hot soup to the cooler spoon.

Front

What is an example of convection in everyday life?

Back

An example of convection is when hot air rises and cold air sinks, such as in a room heated by a radiator.

Front

What is the role of insulation in heat transfer?

Back

Insulation reduces the rate of heat transfer between objects, helping to keep heat in or out.

Front

What is the relationship between temperature and heat flow?

Back

Heat always flows from a hotter object to a colder object until both reach the same temperature.

Front

What is an example of radiation?

Back

An example of radiation is feeling warmth from the sun on your skin, even though the air around you may be cool.