Unit Review Thermo

Hot dogs are good. Campfires are fun in the summer. You can cook a hot dog over a fire (although I don't know what a hot dog is composed of). Assuming you do cook it over the fire and not to the side of the fire since it cooks better over the fire, what type of heat transfer is present?

• Conduction

• Convection

• Radiation

• Entropy

If you increase the pressure, what happens to the temperature?

• Increase

• Decrease

• Stay the same

• Blow Up

Picture it: you are at home in the summer and the AC goes out. After crying for a minute, you get the idea to open your refrigerator door and seal off your kitchen from your house. Describe the change in temperature and entropy in the kitchen.

• They both decrease

• Only temperature increases

• Only entropy increases

• They both increase

Which of the following would increase the pressure on a system?

• Increase the temperature

• Decrease the volume

• Pump in more gas

• All of these wonderful answers

Let's go back to chemistry because I know everyone loved chemistry. Remember a triple point graph? Because you are very skilled at chemistry since you had awesome teachers, you made water, water vapor and ice exist at the same temperature. What has the greatest entropy at the triple point?

• Solid

• Liquid

• Gas

• They are equal

As temperature rises...

• ...an atom's kinetic energy stays the same

• ...an atom's kinetic energy decreases

• ...an atom's kinetic energy increases

• ...an atom's mass increases

More chemistry with some physics mixed in: where is the lowest entropy level on this graph?

• A

• B

• C

• E

The kinetic molecular theory states:

• Particles won't move if you don't apply energy to them

• Particles are always in motion

• Particles only move in liquids and gasses

• At the same temperature, the object with the most mass heats the quickest

If I have a tank of water at 100 C and an equal tank of water at 0 C, where is their equilibrium point?

• 0 C

• 50 C

• 75 C

• 100 C

What unit to you use to measure thermal energy?

• J/Kg * C

• C

• Kg

• J