Heat Transfer: Conduction, Convection, Radiation

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

The three main types of heat transfer are conduction, convection, and radiation.

Front

Define 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

Give an example of conduction.

Back

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

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

Give an example of convection.

Back

An example of convection is the warm air rising and cool air sinking in a room heated by a radiator.

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

Give an example of radiation.

Back

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

Front

How does the Gulf Stream demonstrate convection?

Back

The Gulf Stream is a warm ocean current that moves warm water from the south to the north, demonstrating convection as the warm water rises and moves.

Front

What happens to the temperature of a boulder in the sun?

Back

The boulder gets hot due to radiation from the sun, which transfers heat directly to the boulder.