Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through a solid material without the movement of the material itself. It occurs when two objects at different temperatures are in direct contact.

Front

What is convection?

Back

Convection is the transfer of heat through fluids (liquids and gases) caused by the movement of the fluid itself. Warm fluid rises while cooler fluid sinks, creating a circulation pattern.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as light. It does not require a medium to travel through, allowing heat from the sun to reach the Earth.

Front

What happens to heat during conduction?

Back

Heat flows from the hotter substance to the colder substance when they are in contact.

Front

Give an example of conduction.

Back

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

Front

Give an example of convection.

Back

A pot of water boiling on a stove demonstrates convection as the warm water rises and the cooler water sinks.

Front

Give an example of radiation.

Back

The warmth felt from the sun on your skin is an example of radiation.

Front

What is the direction of heat flow?

Back

Heat always flows from the hotter substance to the colder substance.

Front

How does convection work in a house?

Back

Convection circulates warm and cool air in a house, helping to maintain a comfortable temperature.

Front

What is the role of the sun in heat transfer?

Back

The sun transfers heat to the Earth through radiation.