Conduction, Convection, & Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one through molecular collisions.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids and gases). It occurs when warmer, less dense areas of a fluid rise and cooler, denser areas 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 heat transfer occur in a heat pack applied to cold feet?

Back

The warmth of the heat pack will be conducted onto John’s feet, transferring heat from the pack to his colder feet.

Front

What is an example of conduction in everyday life?

Back

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

Front

What is an example of convection in everyday life?

Back

An example of convection is when hot air rises from a heater, warming the air in a room.

Front

What is an example of radiation in everyday life?

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

What happens to the air in a room when a heater is turned on?

Back

The air near the heater warms up, becomes less dense, and rises, while cooler air moves in to take its place, creating a convection current.

Front

What is the primary way heat travels through solids?

Back

The primary way heat travels through solids is by conduction.

Front

What is the primary way heat travels through liquids and gases?

Back

The primary way heat travels through liquids and gases is by convection.