8. Thermodynamics

8. Thermodynamics

Multiple Choice

Which best describes thermal equilibrium?

• When two objects have the same average kinetic energy of the particles.

• The process of transferring energy from high to low.

• The storage of energy inside an object.

• Balancing the weight of two objects.

Multiple Choice

If the red liquid in a metal can has a temperature of 40°C and the blue liquid it’s in has 10°C, are they in thermal equilibrium?

• Yes

• No because heat will flow from the red to the blue liquid

• No because cold will flow from the blue to the red liquid

Multiple Choice

Also, what method of transfer are we talking about here?

• Convection

• Conduction

• Radiation

Multiple Choice

Object A = Object B

AND

Object A = Object C,

then what can you say about B and C?

• Nothing

• B = C

• B ≠ C

Multiple Choice

What does the Law of Conservation of Energy state?

• Energy cannot be created or destroyed
• Nothing can exchange energy
• Energy will increase over time.
• Energy will decrease over time.

Multiple Choice

Heating up food in the microwave is what kind of heat transfer?

• Conduction

• Convection

• Radiation

Multiple Choice

Which molecules have more kinetic energy (vibrate faster)?

• Cold molecules

• Hot molecules

Multiple Choice

Which one do you think has the MOST entropy?

• Solid

• Liquid

• Gas

Multiple Choice

Which one has more molecules?

• 1

• 2

Multiple Choice

Which one has greater pressure?

• 1

• 2