2024 Heat Tranfer~~Convection, Conduction, Radiation Flashcard

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when two objects at different temperatures touch each other.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). Warmer parts of the fluid rise while cooler parts sink, creating a circulation pattern.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through empty space.

Front

True or False: All objects, regardless of temperature, contain heat energy.

Back

True. Even cold objects have heat energy, although it may be less than that of warmer objects.

Front

Give an example of conduction.

Back

An example of conduction is touching a hot metal spoon that has been in a pot of boiling water.

Front

Give 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

Give an example of radiation.

Back

An example of radiation is feeling the warmth of the sun on your skin, even when you are not in direct contact with it.

Front

What happens to warm air in convection?

Back

In convection, warm air rises because it is less dense than cooler air.

Front

What happens to cool air in convection?

Back

In convection, cool air sinks because it is denser than warm air.

Front

What is the main difference between conduction and convection?

Back

Conduction involves heat transfer through direct contact, while convection involves heat transfer through the movement of fluids.