Heat Transfer

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

Front

What are the three main types of heat transfer?

Back

Conduction, convection, and radiation.

Front

Define conduction.

Back

Conduction is the transfer of heat through direct contact between materials.

Front

Define convection.

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, without the need for a medium.

Front

What happens to air when it is heated?

Back

Warm air becomes less dense and rises, while cooler air is denser and sinks.

Front

What is a convection current?

Back

A convection current is a circular movement of fluid caused by the rising of warmer, less dense fluid and the sinking of cooler, denser fluid.

Front

How does a thermos bottle reduce heat transfer?

Back

A thermos bottle uses insulation to minimize conduction and convection, and a reflective surface to reduce radiation.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is when a metal spoon gets hot after being placed in a hot pot of soup.

Front

What is an example of convection in everyday life?

Back

An example of convection is the way warm air rises from a heater and circulates around a room.