Heat Transfer-Radiation, Conduction, Convection

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 you touch a hot stove and heat transfers from the stove to your hand.

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 way hot air rises in a room, causing cooler air to move in and create a circulation.

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, even though you are not in direct contact with it.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, creating convection currents.

Front

What is an insulator?

Back

An insulator is a material that does not conduct heat well, reducing the transfer of heat.