Thermal Energy - Energy Transfer

The hotter an object, the faster the molecules in it move.

• True

• False

What type of energy describes the motion of molecules in matter?

• Kinetic Energy

• Potential Energy

Thermal energy and temperature describe the same thing.

• True

• False

Which object will have the greatest heat exchange with a room that is at 20 ^oC?

• ice cold water (at 6 ^oC)

• luke warm water

• room temperature water

• boiling water (at 100 ^oC)

Heat transfer by conduction involves direct physical ______.

• transfer

• movement

• contact

• fire

Conduction occurs most easily in _________ because molecules are closer together.

• gases

• liquids

• solids

• All of the above.

Heat transfer by ________ is called radiation.

• movement of matter

• sweating

• molecular motion

• electromagnetic waves

Which of the following radiates energy in the form of electromagnetic waves?

• A bowl of soup

• Our Sun

• A body of water like a lake

• A human being

Convection occurs in _______.

• Gases

• Liquids

• Solids

• All of the above

Luisa wants to be able to hold a cup of hot cocoa while she waits for the school bus. Which container should she choose?

• A styrofoam cup

• An aluminum can

• A glass cup

• A plastic cup