Chapter 6: Thermal Energy Practice Test
 1. What is heat?
 a. a measure of how much thermal energy is in an object b. the amount of energy required to change the physical state of a material c. the energy transferred from something of higher temperature to lower temperature d. All of the above.
 2. What temperature is the boiling point of water on the Celsius scale.
 a. 32°C b. 212°C c. 100°C d. 0°C
 3. What is the term for heat moving through a material or from one material to another?
 a. convention b. radiation c. conduction d. temperature
 4. How does a vacuum bottle minimize heat transfer?
 a. Reflective coating inside the bottle minimizes radiation. b. Inner glass bottles minimize conduction. c. An inner vacuum in the bottle prevents convection and conduction. d. All of the above.
 5. What can be said of two objects that are in thermal equilibrium?
 a. The two objects have the same temperature. b. Heat energy is in transit between the objects. c. The objects have the same amount of potential energy. d. All of the above.
 6. What means of heat transfer is thought to be the driving mechanism of plate tectonics?
 a. volcanoes b. radiation c. conduction d. convection
 7. What is a potential environmental problems related to thermal pollution?
 a. Increased temperature of water may make it difficult for fish to breathe. b. introduction of new species c. eutrophication of a body of water d. All of the above.
 8. What means of heat transfer does not require a medium?
 a. convection b. conduction c. radiation d. All means of heat transfer require a medium.
 9. What is the term for heat transfer by motion of a heat-carrying medium?
 a. convection b. temperature c. radiation d. conduction
 10. Why are gasoline engines so inefficient?
 a. because most of the heat produced just makes the car warmer and does not work b. because exhaust from gasoline engines damages the environment c. because the world is quickly running out of oil, which is used to manufacture gasoline d. because cars are heavy and therefore difficult to move
 11. How is thermal energy transferred from one object to another?
 a. Transfer of thermal energy continues until objects are in thermal equilibrium. b. Thermal energy is transferred form something of higher temperature to something of lower temperature. c. Heat moves from a warm object to a cold object. d. All of the above.
 12. Who is credited with the invention of the modern liquid-in-glass thermometer?
 a. Celsius b. Fahrenheit c. Galileo d. Kelvin
 13. How does heat produce work in an automobile engine?
 a. Friction in the engine produces heat. b. Heat production by the engine expands gas, which forces the pistons to move. c. Galileo d. All of the above.
 14. What is latent heat?
 a. the heat used to raise the temperature of steam b. the amount of energy required to change the physical state of a material c. heat that is not measurable d. All of the above.
 15. What material property is important in refrigeration?
 a. When a gas is compressed, it gains thermal energy. b. Liquids evaporate more as they become warmer. c. Liquids can gain thermal energy from their surroundings. d. All of the above.