Physics 100-Chapter 15 Clicker questions – Flashcards

1. Whether one object is warmer than another has most to do with a) molecular kinetic energy. b) molecular potential energy. c) heat flow. d) masses of internal particles.

2. The motion of molecules that most affects temperature is a) translational motion. b) rotational motion. c) internal vibrational motion. d) simple harmonic motion.

3. At absolute zero, a substance has a) absolutely no molecular motion. b) no more energy to give up. c) no volume. d) All of these.

4. Absolute zero corresponds to a temperature of a) 0 K. b) -273oC c) Both of these. d) None of these.

5. Heat is simply another word for a) temperature. b) thermal energy. c) internal energy that flows from hot to cold. d) radiant energy.

6. Internal energy is normally measured in units of a) calories. b) joules. c) Both of these. d) None of these.

7. If you add the same quantity of heat to both a 1-L and a 2-L container of water, compared with the temperature change of water in the smaller container, the temperature change of water in the larger container will be a) half. b) more than half but less than twice. c) twice. d) none at all.

8. Matter does not contain a) internal energy. b) heat. c) It contains both. d) It contains neither.

9. To say that water has a high specific heat capacity is to say that water a) requires a lot of energy in order to increase in temperature. b) gives off a lot of energy in cooling. c) absorbs a lot of energy for a small increase in temperature. d) All of these.

10. Hot sand cools off faster at night than plants and vegetation, which indicates that the specific heat capacity for sand is a) less than that of plants. b) more than that of plants. c) likely the same as that of plants. d) Not enough information to answer.

11. The specific heat capacity for aluminum is more than twice that of copper. If equal quantities of heat are given to equal masses of aluminum and copper, the metal that more rapidly increases in temperature is a) aluminum. b) copper. c) Actually both will increase at the same rate. d) None of these.

12. The high specific heat capacity of water has great importance in a) climates. b) cooling systems. c) ocean currents. d) All of these.

13. The thermal expansion of steel is about the same as for a) water. b) air. c) concrete. d) All of these.

14. The fact that gasoline will overflow from an automobile tank on a hot day is evidence that the expansion of gasoline is a) more than the tank material. b) about the same as the tank material. c) less than the tank material. d) negligible.

15. Water at 4 degrees C will expand when it is slightly a) cooled. b) warmed. c) Both. d) Neither.

16. The density of water at 4 degrees C will slightly decrease when it is a) cooled. b) warmed. c) Both. d) Neither.