Heat Transfer Practice

Front

What is conduction?

Back

Conduction is the transfer of heat through a solid material without any movement of the material itself. It occurs when two objects at different temperatures are in direct contact.

Front

What is convection?

Back

Convection is the transfer of heat through fluids (liquids and gases) caused by the movement of the fluid itself. Warmer, less dense fluid rises while cooler, denser fluid sinks.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation. It does not require a medium and can occur in a vacuum.

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

Give an example of convection.

Back

An example of convection is the warm air rising from a heater, which then cools down and sinks, 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 materials are good conductors of heat?

Back

Metals like copper and aluminum are good conductors of heat.

Front

What materials are good insulators of heat?

Back

Materials like wood, plastic, and rubber are good insulators of heat.

Front

How does temperature affect conduction?

Back

Higher temperatures increase the energy of particles, leading to faster conduction as particles collide more frequently.

Front

How does temperature affect convection?

Back

In convection, higher temperatures cause fluids to become less dense and rise, creating convection currents.