Convection, Conduction, 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, less dense areas of a fluid rise and cooler, denser areas sink.

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, allowing heat to be transferred through empty space.

Front

Give an example of conduction.

Back

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

Front

Give an example of convection.

Back

An example of convection is the rising of warm air over a beach, causing cooler air from the ocean to move in.

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 liquid rises and cooler liquid sinks, creating a circular motion.

Front

How does radiation differ from conduction and convection?

Back

Radiation does not require a medium to transfer heat, while conduction and convection require direct contact or movement of a medium.

Front

What role does density play in convection?

Back

In convection, warmer fluids are less dense and rise, while cooler fluids are denser and sink, creating a cycle.