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26. When water vapor condenses in a parcel of air rising in an 35. A fully developed cyclonic storm is most likely to form
unstable atmosphere, the parcel is a. on a stationary front.
a. forced to the ground. b. in a high-pressure center.
b. slowed. c. from differential heating.
c. stopped. d. over a cool ocean.
d. accelerated upward. 36. The basic difference between a tropical storm and a hurricane is
27. A parcel of air with a relative humidity of 50 percent is given an a. size.
upward shove into the atmosphere. What is necessary before b. location.
cloud droplets form in this air? c. wind speed.
a. Cooling d. amount of precipitation.
b. Saturation 37. Most of the great deserts of the world are located
c. Condensation nuclei a. near the equator.
d. All of the above are correct. b. 30° north or south latitude.
28. A cloud is hundreds of tiny water droplets suspended in the air. c. 60° north or south latitude.
The average density of liquid water in such a cloud is about d. anywhere, as there is no pattern to their location.
3
a. 0.1 g/m . 38. The average temperature of a location is made more even by the
3
b. 1 g/m . influence of
3
c. 100 g/m . a. a large body of water.
3
d. 1,000 g/m . b. elevation.
29. When water vapor in the atmosphere condenses to liquid water, c. nearby mountains.
a. dew falls to the ground. d. dry air.
b. rain or snow falls to the ground. 39. The climate of a specific location is determined by
c. a cloud forms. a. its latitude.
d. All of the above are correct. b. how much sunlight it receives.
30. In order for liquid cloud droplets at the freezing point to freeze c. its altitude and nearby mountains and bodies of water.
into ice crystals, d. All of the above are correct.
a. condensation nuclei are needed. 40. The process that is not involved with how water cycles in and out
b. further cooling is required. of the atmosphere is
c. ice-forming nuclei are needed. a. evaporation.
d. nothing more is required. b. boiling.
31. Which basic form of a cloud usually produces longer periods of c. condensation.
drizzle, rain, or snow? d. precipitation.
a. Stratus 41. The process of water vapor cycling in and out of the atmosphere
b. Cumulus with evaporation of water from the surface and precipitation of
c. Cirrus water back to the surface is called the
d. None of the above is correct. a. unusual weather cycle.
32. Which basic form of a cloud usually produces brief periods of b. atmospheric cycle.
showers? c. hydrologic cycle.
a. Stratus d. reverse flow cycle.
b. Cumulus 42. Water that returns to Earth’s surface in either solid or liquid form
c. Cirrus is called
d. None of the above is correct. a. rain.
33. The type of air mass weather that results after the arrival of polar b. snow.
continental air is c. ice.
a. frequent snowstorms with rapid changes. d. precipitation.
b. clear and cold with gradual changes. 43. You are standing on a warm beach in Tahiti. Rain begins to fall.
c. unpredictable but with frequent and rapid changes. The type of cloud must be
d. much the same from day to day, with conditions depending a. cirrus.
on the air mass and the local conditions. b. cumulus
34. The appearance of high cirrus clouds, followed by thicker and c. stratus.
lower stratus clouds, then continuous light rain over several days d. storm.
probably means which of the following air masses has moved to 44. Precipitation that is formed by cycling repeatedly through a
your area? thunderstorm, falling, and then being returned to the upper of
a. Continental polar the thunderclouds by updrafts is
b. Maritime tropical a. rain.
c. Continental tropical b. snow.
d. Maritime polar c. hail.
d. rain and snow.

23-29 CHAPTER 23 Weather and Climate 593