Heat Transfer: Conduction, Convection, Radiation P1

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). Warmer parts of the fluid rise while cooler parts sink, 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

How does convection work in a swimming pool?

Back

In a swimming pool, warmer water near the surface rises, while cooler water sinks, creating a circulation of water that distributes heat.

Front

Why does a boulder get hot in the sun?

Back

A boulder gets hot in the sun due to radiation, as it absorbs heat from sunlight.

Front

What happens to air near the ceiling of a room?

Back

The air near the ceiling is warmer because it rises due to convection, as warm air is less dense than cool air.

Front

How does a fireman feel heat through a door?

Back

A fireman feels heat through a door due to conduction, as heat transfers from the hot side of the door to his hand.

Front

What causes ice to melt when held in your hand?

Back

Ice melts in your hand due to conduction, as heat from your hand transfers to the ice.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is touching a metal spoon that has been sitting in a hot pot; the heat transfers from the pot to the spoon to your hand.

Front

What is an example of convection in nature?

Back

An example of convection in nature is the formation of wind; warm air rises and cool air moves in to take its place.