Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through a material without the movement of the material itself, typically occurring in solids.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) where warmer, less dense areas rise and cooler, denser areas sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, which can occur in a vacuum.

Front

Which surface is the best absorber of infrared radiation?

Back

A dull black surface is the best absorber of infrared radiation.

Front

Which surface is the worst absorber of infrared radiation?

Back

A shiny white surface is the worst absorber of infrared radiation.

Front

How is heat transferred when boiling a pot of water on the stove?

Back

Heat is transferred through convection when boiling a pot of water.

Front

What is the definition of a good emitter of infrared radiation?

Back

A good emitter of infrared radiation is a surface that can effectively radiate heat, such as a matt black surface.

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 is the relationship between temperature and density in convection?

Back

In convection, as temperature increases, density decreases, causing the warmer fluid to rise.

Front

What is an example of conduction in everyday life?

Back

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