Conduction, Convection and Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when faster-moving particles collide with slower-moving particles, transferring energy.

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 fluid rises and cooler, denser fluid sinks, 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, allowing heat to be transferred through empty space.

Front

Give an example of conduction.

Back

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

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

Give an example of radiation.

Back

An example of radiation is feeling the warmth of the Sun on your skin, even when you are not in direct contact with it.

Front

How does conduction occur in solids?

Back

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

Front

How does convection occur in liquids?

Back

In liquids, convection occurs as warmer liquid rises and cooler liquid sinks, creating a flow that transfers heat.

Front

How does radiation differ from conduction and convection?

Back

Radiation differs from conduction and convection because it does not require a medium; it can occur in a vacuum.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature, resulting in no net heat transfer.