Conduction, Convection, Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat energy is passed from one molecule to another.

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.

Front

What happens to warm air in convection?

Back

Warm air rises because it is less dense than cooler air, which sinks.

Front

What is the flow of energy from warmer places to cooler places called?

Back

Heat.

Front

How does conduction occur when touching a hot object?

Back

Heat is transferred from the hot object to your skin through direct contact, causing a burn.

Front

What is an example of convection in everyday life?

Back

Boiling water, where hot water rises to the top and cooler water sinks.

Front

What is an example of conduction in everyday life?

Back

Walking on warm sand with bare feet.

Front

What is an example of radiation in everyday life?

Back

Feeling the warmth of the sun on your skin.

Front

What is the role of density in convection?

Back

In convection, warmer fluids become less dense and rise, while cooler fluids become denser and sink.