Heat Transfer

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). Warm air rises while cool air sinks, creating a circulation pattern.

Front

How does heat transfer occur when holding hands with someone?

Back

Heat energy from your friend's hand transfers to your hand through conduction, making your hand warmer.

Front

What is radiation in terms of heat transfer?

Back

Radiation is the transfer of heat through electromagnetic waves, such as sunlight warming your skin.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is an example of convection in everyday life?

Back

An example of convection is boiling water, where hot water rises to the top and cool water sinks to the bottom.

Front

What is the difference between conduction and convection?

Back

Conduction occurs through direct contact, while convection involves the movement of fluids.

Front

What is an example of radiation?

Back

An example of radiation is feeling warmth from a campfire or the sun without direct contact.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, allowing cooler air to sink.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact reach the same temperature and no heat flows between them.

Front

What is the role of insulation in heat transfer?

Back

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