Thermal Energy and Molecular Movement

When particles in matter move, they create __________.

• a thermometer

• frozen energy

• thermal energy

• water

Which of the following is correct for how heat (thermal energy) travels?

• From cold to hot

• From hot to cold

• Back and forth in all directions

What device do we use to measure temperature?

• Microscope

• Ruler

• Speedometer

• Thermometer

What happens to particles as they heat up?

• They slow down
• Nothing
• They don't move
• They speed up

In a substance at a low temperature, the particles have _______ kinetic energy and movement

• equal

• high

• low

• no

The temperature of a substance increases as

• the substance expands

• the substance's volume increases

• the substance's mass increases

• the average kinetic energy of its particles increases

The total kinetic and potential energy of all the particles of an object is

• mechanical energy

• thermal energy

• nuclear energy

• electrical energy

Everything has thermal energy

• False

• True

What happens to particles as they cool down?

• They slow down
• Nothing
• They don't move
• They speed up

As the marshmallow increased in energy, the molecules

• Speed up and spread out

• Speed up and slowed down

• Slowed down and got closer together

• Slowed down and spread out.