Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat energy is passed from one molecule to another.

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.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium and can occur in a vacuum.

Front

Example of conduction in everyday life?

Back

Touching a hot stove and feeling the heat transfer to your hand.

Front

Example of convection in everyday life?

Back

Boiling water in a pot where hot water rises and cool water sinks.

Front

Example of radiation in everyday life?

Back

Feeling the warmth of the sun on your skin.

Front

What happens to cold feet when a heat pack is applied?

Back

The warmth of the heat pack will be conducted onto John’s feet, warming them up.

Front

How does a lamp keep a lizard warm?

Back

The heat from the lamp is transferred to the lizard through radiation.

Front

What is the role of air in convection?

Back

Air acts as a fluid that carries heat; warm air rises while cool air sinks, creating a convection current.

Front

What is the process when a hot rock is placed in cool water?

Back

Heat energy is transferred from the rock to the water by conduction.