Transfer of Thermal Heat

There are ____________ different ways that heat can move.

• one
• two
• three
• four

What is the definition of CONDUCTION?

• When heat is transferred from objects like rays of light or electromagnetically.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• When heat transfers from objects that are touching.
• When heat transfers through the heater or AC in your house.

What is the definition of CONVECTION

• When heat transfers through waves.
• When heat transfers from objects that are touching.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• Heat traveling from the sun

A group of friends gather around a fire to stay warm. This is an example of ________.

• conduction

• convection

• radiation

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

• hotter to colder

• colder to hotter

• hotter to hotter

• colder to colder

Near the ceiling of a room the air is warmer. The warm air rises because of ________.

• conduction

• convection

• radiation

Hot coffee is stirred with a spoon; the spoon gets hot due to ________.

• conduction

• convection

• radiation

Why does a metal lawn chair get hot in the sun when the grass sitting in the same sunlight remains cool to the touch?

• Heat travels easily through plants but not metals.

• Heat travels easily through both plants and metals.

• Heat travels easily through metal objects but not through plants.

Hot things have ____________ thermal energy than cold things

• more

• less

• same

• potato

As temperature increases, molecules _____________

• move slower

• move the same

• move faster

• stop moving