Heat Transfer

Hot water rises and cold water sinks. Is this:

• Convection

• Conduction

• Radiation

Stir frying vegetables is an example of

• Convection

• Conduction

• Radiation

A spoon in a cup of hot soup becomes warmer

• Convection

• Conduction

• Radiation

A hot air balloon rises because of

• Convection

• Conduction

• Radiation

You feel the heat from a campfire

• Convection

• Conduction

• Radiation

Transfer of thermal energy through "space"

• conduction
• convection
• radiation

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.

Conduction requires

• Electricity

• the electromagnetic spectrum and particles

• air or water flow

• direct contact

Heat transfer always moves ...

• cold to hot

• east to west

• hot to cold

• north to south

Which direction is heat flowing in the picture?

• from the hand to the ice
• from the ice to the hand
• heat is not being transferred
• there is no way to tell