Heat Transfer

Front

CONDUCTION

Back

When heat transfers from objects that are touching.

Front

CONVECTION

Back

a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.

Front

Which of the following is an example of convection?

• A hair dryer is drying up your hair.
• When the AC or heater changes the temperature.
• When a car engine turns hot after being turned on.
• When you are making soup and the water is rising and lowering.

Back

When you are making soup and the water is rising and lowering.

Front

The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer: conduction, convection, radiation.

Back

radiation

Front

Walking on the warm sand with your bare feet demonstrates this type of heat transfer: conduction, convection, radiation.

Back

conduction

Front

How do friends stay warm around a fire? Options: conduction, convection, radiation

Back

radiation

Front

Why does warm air rise near the ceiling of a room?

Back

convection

Front

Why does a huge rock at the state park get so hot during the day? Options: conduction, convection, radiation

Back

radiation

Front

Why does the side of a chair facing a fireplace with a glass screen get warm? Options: conduction, convection, radiation

Back

radiation

Front

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

Back

Hotter to colder