Conduction, Convection, Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through a solid material without the movement of the material itself, typically occurring in metals.

Front

What is convection?

Back

Convection is the transfer of heat through fluids (liquids and gases) caused by the movement of the fluid itself, where warmer areas rise and cooler areas sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur through a vacuum, such as sunlight warming the Earth.

Front

How does warm air behave in a room?

Back

Warm air rises because it is less dense than cooler air, leading to convection currents.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is touching a hot stove and feeling the heat transfer to your hand.

Front

What is an example of convection in cooking?

Back

An example of convection is boiling water in a pot, where the hot water rises and cooler water moves down.

Front

What is an example of radiation in nature?

Back

An example of radiation is the heat from the sun warming your skin.

Front

What direction does heat flow in thermal energy transfer?

Back

Heat always flows from the hotter substance to the colder substance.

Front

What is the role of density in convection?

Back

Density differences in fluids cause warmer, less dense fluid to rise and cooler, denser fluid to sink, creating convection currents.

Front

How does insulation affect heat transfer?

Back

Insulation reduces heat transfer by conduction, convection, and radiation, keeping heat in or out of a space.