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, where heat moves from the hotter object to the cooler one.

Front

Give an example of conduction.

Back

An example of conduction is a metal spoon getting hot when placed in a pot of hot soup.

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 warm air rising from a heater, causing cooler air to sink.

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

What is the role of the Gulf Stream in heat transfer?

Back

The Gulf Stream is a warm ocean current that transfers heat from the equator to the northern regions, affecting climate.

Front

How does a blow dryer use convection?

Back

A blow dryer uses convection by blowing warm air over wet hair, helping to evaporate the water.