Conduction, Convection, Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when two objects at different temperatures touch each other.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It happens when warmer, less dense fluid rises and cooler, denser fluid sinks.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of waves. It does not require a medium, so it can occur in a vacuum, like heat from the sun.

Front

How does a chair get warm when placed near a fireplace?

Back

The chair gets warm due to radiation from the fireplace.

Front

How does a pot get hot when placed on a stove?

Back

The pot gets hot due to conduction from the stove.

Front

What type of heat transfer occurs when walking on warm sand?

Back

Walking on warm sand demonstrates conduction.

Front

What happens to a hot liquid or air in convection?

Back

A hot liquid or air expands, becomes less dense, and rises, while cooler, denser liquid or air sinks.

Front

What causes sunburn?

Back

Sunburn is caused by radiation from the sun.

Front

Give an example of conduction in everyday life.

Back

An example of conduction is touching a metal spoon that has been sitting in a hot pot.

Front

Give an example of convection in everyday life.

Back

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