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 physical touch.

Front

What is convection?

Back

Convection is the transfer of heat through liquids and gases caused by the movement of the fluid itself. Warmer, less dense fluid rises while 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 to travel through, allowing heat to be transferred through space.

Front

How does heat flow in conduction?

Back

In conduction, heat flows from the hotter object to the cooler object until both reach the same temperature.

Front

Give an example of conduction.

Back

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

What happens to a car's inside temperature on a sunny day?

Back

A car’s inside temperature can rise to over 100 degrees due to radiation from the sun.

Front

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

Back

Convection is the primary way heat travels through liquids and gases.

Front

What is the direction of heat flow when holding a hot cup of tea?

Back

Heat flows from the cup to your hand.