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6. The transfer of heat from a region of higher temperature to a 16. Weather prediction is not based on
region of lower temperature by the displacement of high-energy a. use of computer models.
molecules is b. the Farmer’s Almanac.
a. thermal energy. c. the study of the movement of air masses.
b. conduction. d. knowledge of basic scientific laws.
c. convection. 17. The general pattern of weather that occurs for a region over a
d. radiation. number of years is called
7. The one term that does not describe an air mass is a. a weather history.
a. maritime polar. b. the climate.
b. continental southern. c. a forecast.
c. maritime tropical. d. the environment.
d. continental polar. 18. The source of energy that drives the hydrologic cycle is
8. A boundary between air masses is called a a. the ocean.
a. boundary. b. latent heat from evaporating water.
b. front. c. the Sun.
c. dividing line. d. Earth’s interior.
d. barrier. 19. Considering the average amount of water that evaporates from
9. A low-pressure center where the winds move counterclockwise Earth’s oceans each year and the average amount that returns by
into the low-pressure center is called a (an) precipitation,
a. occluded front. a. evaporation is greater than precipitation.
b. stationary front. b. precipitation is greater than evaporation.
c. cyclone. c. precipitation balances evaporation.
d. high. d. there is no pattern that can be generalized.
10. Clear, fair weather is associated with a 20. A thunderstorm that occurs at 3 a.m. over a flat region of the
a. high. country was probably formed by
b. low. a. convection.
c. stationary front. b. differential heating.
d. low-pressure center. c. the meeting of moving air masses.
11. A thunderstorm usually does not develop under what d. Any of the above is correct.
conditions? 21. White, puffy cumulus clouds that form over a flat region of
a. Warm air the country during the late afternoon of a clear, warm day are
b. Cold air probably the result of
c. Moist air a. convection.
d. Humid air b. a barrier to moving air.
12. Upward air motion that leads to the growth of cumulus clouds to c. the meeting of moving air masses.
tremendous heights is called a (an) d. None of the above is correct.
a. lift. 22. Without any heat being added or removed, a parcel of air that is
b. flight. expanding is becoming
c. updraft. a. neither warmer nor cooler.
d. rise. b. warmer.
13. The separation of charge associated with the movement of c. cooler.
water droplets as they fall or as they are lifted by an updraft can d. the temperature of the surrounding air.
result in 23. A parcel of air shoved upward into atmospheric air in a state of
a. lightning. instability will expand and become cooler,
b. hail. a. but not as cool as the surrounding air.
c. thunder. b. and thus colder than the surrounding air.
d. a rainbow. c. reaching the same temperature as the surrounding air.
14. An intense low-pressure area with widespread winds greater than d. then warmer than the surrounding air.
120 km/h is a 24. A parcel of air shoved upward into atmospheric air in a state of
a. tornado. stability will expand and become cooler,
b. tropical storm. a. but not as cool as the surrounding air.
c. hurricane. b. and thus colder than the surrounding air.
d. cyclone. c. reaching the same temperature as the surrounding air.
15. A hurricane does not have d. then warmer than the surrounding air.
a. gale winds. 25. Cumulus clouds usually mean an atmospheric state of
b. rain and thunderstorms. a. stability.
c. a high-pressure area. b. instability.
d. an “eye” at its center. c. cool, dry equilibrium.
d. warm, humid equilibrium.

592 CHAPTER 23 Weather and Climate 23-28