PHYS 101 Quiz Temperatures

PHYS 101 Quiz: Temperatures and Heat

1. What’s wrong with the statement “heat rises?”
2. Why do bridges have expansion joints?
3. Air at a temperature of 32° F has a relative humidity of 60%. If the temperature of the same air rises to 40° F, the relative humidity
4. A hot pizza contains
5. specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C A 1 kg block of ice is removed from a freezer where its temperature was – 10°C. The amount of heat absorbed by the ice as it warms to 0°C is
6. The warmth you feel from the Sun at the beach is an example of
7. A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the gas rises. The amount of temperature rise is governed by
8. Which mechanism(s) of heat transfer will work in a vacuum?
9. Which are bigger—Celsius degrees or Fahrenheit degrees?
10. When water boils, its temperature
11. A piece of chocolate melts in your mouth. This is an example of
12. In a gas of diferent types of molecules all at the same temperature, the speeds of the heavier molecules will generally be _____________ the speeds of the lighter molecules.
13. Which is larger, a calorie or a joule?
14. A bimetallic strip is usable as a thermometer because of
15. A device that makes use of a bimetallic strip is
16. When you add heat to ice, its temperature always stays constant.
17. You can increase the temperature of a gas by compressing it.
18. As the air cools at night the relative humidity usually drops.
19. A wood stove in the corner of a cabin causes the entire cabin to become heated because of heat conduction.
20. You feel warm from the Sun at the beach because of heat radiation.
21. A hot pizza contains heat.
22. A barometer can work because of a bimetallic strip.
23. The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of heat required to boil away 1 kg of water is 10 times the amount of heat required to melt 1 kg of ice.
24. The specific heat capacity of water is about twice the specific heat capacity of ice. The amount of heat required to boil 1 kg of water is twice the amount of heat required to melt 1 kg of ice.
25. Internal energy can only be changed by adding heat
26. Select the closest matching pairs possible. 3 pts for each response. Liquids Entropy
27. The titanium shell of an SR-71 airplane would expand when flying at a speed exceeding 3 times the speed of sound. If the skin of the plane is 400 degrees C and the linear coefficient of expansion for titanium is 5×10 -6 /C when flying at 3 times the speed of sound, how much would a 10-meter long (originally at 0C) rod portion (1-dimension) of the airplane expand? Write your final answer in centimeters and show all of your work.