Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through a material without the movement of the material itself, typically occurring in solids.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases), where warmer areas rise and cooler areas sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.

Front

Give an example of conduction in everyday life.

Back

An example of conduction is when you touch a hot stove and heat transfers from the stove to your hand.

Front

Give an example of convection in everyday life.

Back

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

Front

Give an example of radiation in everyday life.

Back

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

Front

What happens to water in a kettle as it heats up?

Back

As water heats up in a kettle, the hot water at the bottom rises while the cooler water at the top sinks, creating a convection current.

Front

How does a toaster oven use convection to heat food?

Back

A toaster oven heats the air inside, creating cycles of hot air that circulate and warm the food.

Front

What is the role of temperature in conduction?

Back

In conduction, heat flows from a region of higher temperature to a region of lower temperature until thermal equilibrium is reached.

Front

What is the significance of the medium in convection?

Back

In convection, the medium (liquid or gas) is essential as it carries the heat through movement.