#2 Thermal Energy and Energy Transfer Study Guide

What does the particle kinetic molecular theory of matter state?

• Particles of matter are stationary

• Particles of matter attract each other

• Particles of matter repel each other

• Particles of matter are not made of atoms

According to the particle kinetic molecular theory, what is true about particles of matter?

• They are constantly in motion

• They are always stationary

• They do not have space between them

• They are not made of atoms

What happens to the average molecular kinetic energy when something gets colder?

• It increases

• It remains the same

• It decreases

• It fluctuates

What occurs to molecules when heat is added?

• They contract and slow down

• They spread apart and move more quickly

• They stop moving

• They become denser

What happens to molecules in hot water as the velocity decreases?

• They speed up

• They slow down

• They remain constant

• They evaporate

How do light-colored surfaces interact with light and heat compared to dark surfaces?

• They absorb more light and heat

• They reflect more light and heat

• They absorb the same amount of light and heat

• They do not interact with light and heat

Which of the following is an insulator?

• Aluminum foil

• Ocean water

• Wood

• Copper

What is the role of insulators in heat transfer?

• They allow heat to transfer easily

• They do not allow heat to transfer easily

• They increase heat transfer

• They have no effect on heat transfer

What happens to water vapor molecules when they cool down?

• They speed up and rise

• They slow down and fall

• They remain constant

• They evaporate

Which of the following is a conductor?

• Wood

• Foam

• Aluminum foil

• Plastic