Heat transfer

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

Can you give an example of conduction?

Back

An example of conduction is when you touch a hot stove and feel the heat on your hand.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It happens when warmer parts of a fluid rise and cooler parts sink.

Front

Can you give an example of convection?

Back

An example of convection is when warm air rises and cool air moves in to take its place, like in a room with a heater.

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.

Front

Can you give an example of radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin.

Front

What happens when you touch a hot object?

Back

When you touch a hot object, heat is transferred from the object to your skin through conduction.

Front

What type of heat transfer occurs when you walk on warm sand?

Back

Walking on warm sand demonstrates conduction, as heat moves from the sand to your feet.

Front

What type of heat transfer occurs when you feel heat from a lamp?

Back

Feeling heat from a lamp is an example of radiation, as heat travels through the air to reach you.

Front

What is an example of heat transfer when cooking?

Back

When you cook food in a pot on the stove, heat is transferred to the pot and then to the food through conduction.