Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through a 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 the movement of fluids (liquids or gases). It occurs when warmer areas of a liquid or gas rise and cooler areas sink, creating a circulation pattern.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, which is why heat from the Sun can reach the Earth.

Front

How does heat transfer occur when a pot is placed on a stove?

Back

Heat transfer occurs through conduction, as the stove heats the pot directly.

Front

What is an example of convection in everyday life?

Back

An example of convection is the way warm air rises and cool air sinks in a room, creating a circulation of air.

Front

What happens to your hand when you hold a hot cup of tea?

Back

Heat flows from the hot cup of tea to your hand through conduction.

Front

Why does the handle of a metal spoon get warm in hot soup?

Back

The handle warms up due to conduction, as heat is transferred from the hot soup to the spoon.

Front

How does the Sun transfer heat to the Earth?

Back

The Sun transfers heat to the Earth through radiation, using electromagnetic waves.

Front

What is the main difference between conduction and convection?

Back

Conduction involves direct contact between materials, while convection involves the movement of fluids.

Front

Can heat be transferred through a vacuum?

Back

Yes, heat can be transferred through a vacuum by radiation, as it does not require a medium.