Conduction, Convection and 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 by the movement of fluids (liquids or gases) due to differences in temperature and density.

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

Example of conduction in everyday life?

Back

An ice cube melting in a person’s hand is an example of conduction.

Front

Example of convection in everyday life?

Back

Warm air rising near the ceiling of a room is an example of convection.

Front

Example of radiation in everyday life?

Back

The heat from the sun warming the Earth is an example of radiation.

Front

What happens to warm air in a room?

Back

Warm air rises because it is less dense than cooler air.

Front

What is the role of density in convection?

Back

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

Front

How does heat transfer from water to ice?

Back

Heat flows from the warmer water to the colder ice, causing the ice to melt.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact no longer transfer heat, as they are at the same temperature.