Quarterly Review: 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

Give an example of conduction.

Back

An example of conduction is a metal spoon getting hot when placed in a pot of hot soup.

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.

Front

Give an example of convection.

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 is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through.

Front

Give an example of radiation.

Back

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

Front

How does conduction occur in solids?

Back

In solids, conduction occurs as particles vibrate and collide with neighboring particles, transferring energy.

Front

How does convection occur in liquids?

Back

In liquids, convection occurs as warmer, less dense liquid rises while cooler, denser liquid sinks, creating a current.

Front

What is the role of temperature in conduction?

Back

Temperature affects conduction; the greater the temperature difference between two objects, the faster the heat transfer.

Front

What is a convection current?

Back

A convection current is a continuous cycle of rising warm fluid and sinking cool fluid, creating a flow that transfers heat.