Heat Transfer Review

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). Warm air or liquid rises, while cooler air or liquid sinks, 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, so it can occur in a vacuum, like the heat from the sun.

Front

Give an example of conduction.

Back

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

Front

Give an example of convection.

Back

An example of convection is when boiling water; the hot water rises to the top while the cooler water sinks.

Front

Give an example of radiation.

Back

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

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 cold air in convection?

Back

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

Front

How does conduction occur in cooking?

Back

In cooking, conduction occurs when food is placed on a hot surface, like a frying pan, and heat transfers directly from the pan to the food.

Front

How does convection affect weather?

Back

Convection affects weather by creating wind patterns; warm air rising and cool air sinking can lead to cloud formation and storms.