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) by the movement of the fluid itself. It creates currents that distribute heat.

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.

Front

In heat transfer, heat flows from which substance to which substance?

Back

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

Front

Give an example of conduction.

Back

An example of conduction is when a metal spoon gets hot after being placed in a hot cup of coffee.

Front

Give an example of convection.

Back

An example of convection is when warm air rises and cool air sinks, creating a current in a room.

Front

Give an example of radiation.

Back

An example of radiation is feeling the warmth of the sun on your skin.

Front

What happens to the particles in a substance when it is heated?

Back

When a substance is heated, its particles gain energy, move faster, and spread apart, causing the substance to expand.

Front

What is the role of a conductor in heat transfer?

Back

A conductor is a material that allows heat to pass through it easily, such as metals.

Front

What is an insulator?

Back

An insulator is a material that does not allow heat to pass through it easily, such as rubber or wood.