4.3 Thermal Energy

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Multiple Choice

What happens to particles as they heat up?

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

Multiple Choice

Which color shows molecules moving the SLOWEST?

• red

• purple

• green

• blue

Multiple Choice

The Kinetic Theory of matter says that all particles of matter are constantly in _____________.

• Motion

• state of matter

• convection

• radiation

Multiple Choice

Particles in motion have ___________ energy.

• thermal

• kinetic

• potential

• sound

Multiple Choice

How do you increase the kinetic energy of molecules?

• Decrease the temp

• change the energy input

• increase the thermal energy

• expand the molecules and increase the density

Multiple Choice

When matter moved from a solid to a liquid the molecules ____________.

• Expand and slow down

• Expand and become more dense

• Expand and speed up

• Contract and become more dense

Multiple Choice

When matter goes from a gas to a liquid, the molecules ____________.

• Expand and slow down

• Contract and slow down

• Contract and speed up

• Expand and speed up

Multiple Choice

What is the measurement of kinetic energy of molecules?

• Heat

• Thermal Energy

• Temperature

• Density

Multiple Choice

The amount of energy required to raise the temperature 1ºC for every kilogram is called____?

• Thermal Energy
• Specific Heat
• Temperature
• Kinetic Energy

Multiple Choice

Water has a specific heat of 4184 J/KgºC.  Wood has a specific heat of 1760 J/KgºC.  What material needs more energy to raise the temperature 1ºC

• Wood
• Water
• Both are the same