Conduction, and Radiation

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials.

Front

What is convection?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of thermal energy through electromagnetic waves or rays, without the need for a medium.

Front

How does solar radiation affect objects on Earth?

Back

Solar radiation heats objects directly, causing them to increase in temperature.

Front

What happens to a crayon on a hot driveway?

Back

The crayon melts due to solar radiation heating the driveway, which then transfers heat to the crayon by conduction.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is when you touch a hot stove and feel the heat transfer to your hand.

Front

What is an example of convection?

Back

An example of convection is boiling water, where hot water rises and cooler water sinks.

Front

What is an example of radiation?

Back

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

Front

What type of heat transfer occurs in a vacuum?

Back

Radiation is the only type of heat transfer that can occur in a vacuum.

Front

What is the role of density in convection?

Back

In convection, warmer, less dense fluid rises while cooler, denser fluid sinks, creating a circulation pattern.