Thermal Energy Transfer

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between objects.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in density.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight.

Front

What happens to particles when heat is added to a system?

Back

The particles speed up and move more vigorously.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact reach the same temperature and no heat flows between them.

Front

Example of conduction:

Back

Touching a hot metal spoon in a pot of boiling water.

Front

Example of convection:

Back

Warm air rising in a room, causing the attic to be warmer than the basement.

Front

Example of radiation:

Back

The Sun heating the Earth.

Front

What is the effect of heat on the density of a substance?

Back

Heating a substance generally decreases its density, causing it to rise.

Front

What is a real-life example of convection?

Back

Boiling water in a pot, where hot water rises and cooler water sinks.