9-36. Rapidly changing weather conditions 



throughout all seasons are produced in 

 the midlatitudes by 



1. migratory wind systems 



2. cyclostrophic wind systems 



3. geostrophic and gradient wind systems 



4. stationary or quasi-stationary wind 

 systems 



9-37. A counterclockwise circulation of air in 

 the Southern Hemisphere is known as a/an 



1. cyclone 



2. tornado 



3. hurricane 



4. anticyclone 



9-38. What designation is given to a migratory 

 system whose winds blow clockwise and 

 slightly across isobars toward its 

 center, and where will it be found? 



1. A cyclone in the Southern Hemisphere 



2. A cyclone in the Northern Hemisphere 



3. An anticyclone in the Southern 

 Hemisphere 



4. An anticyclone in the Northern 

 Hemisphere 



9-39. The word cyclolysis refers to the 



1. first stage in the development of a 

 cyclone 



2. intensification of an existing 

 cyclone 



3. decrease and extinction of a cyclone 



4. formation of a new cyclone 



9-40. In which season of the year does the mon- 

 soon wind blow toward large land areas? 



1. Fall 



2. Winter 



3. Spring 



4. Summer 



9-41. What causes the almost constant rains 

 that are associated with the summer 

 monsoons? 



1. Warming of moist air 

 cal lifting 



2. Cooling of moist air 

 motion 



3. Warming of moist air 

 motion 



4. Cooling of moist air 

 cal lifting 



9-42. Which of the following statements con- 

 cerning the Jetstream is correct? 



1. It is stronger in summer than in 

 winter 



2. It increases indefinitely in inten- 

 sity with elevation 



3. Its winds can vary in speed from 50 

 knots to more than 250 knots 



4. It is always found at the same lati- 

 tude and elevation all around the 

 earth at the same time 



due 



to 



mechani- 



due 



to 



downslope 



due 



to 



downs lope 



due 



to 



mechani- 



Learning Objective: Identify char- 

 acteristics of tertiary circulations. 



9-43. How do the day and night temperatures of 

 land areas compare with those of water 

 areas? 



1. Land areas are warmer during both day 

 and night 



2. Land areas are cooler during both day 

 and night 



3. Land areas are warmer during the day 

 and cooler at night 



4. Land areas are cooler during the day 

 and warmer at night 



9-44. In what overall direction do local winds 

 tend to blow during the day and night in 

 areas where large bodies of water and 

 land meet? 



1. From water to land during both day 

 and night 



2. From land to water during both day 

 and night 



3. From land to water during the day and 

 from water to land at night 



4. From water to land during the day and 

 from land to water at night 



9-45. At what times of the year are land 

 breezes most pronounced? 



1. Late fall and early winter 



2. Late winter and early spring 



3. Late spring and early summer 



4. Late summer and early fall 



9-46. Refer to figure 13-13 in your textbook. 



Air movement at night in a valley between 

 mountains is characterized by 



1. a warm updraft in the center 



2. warm updrafts along upslopes 



3. cool updrafts along upslopes 



4. a cool downdraft in the center 



9-47. Which type of wind flows from a valley 

 area up mountain slopes? 



1. Foehn 



2. Glacier 



3. Anabatic 



4. Katabatic 



9-48. Chinook winds are warm because of the 



1. expansion of ascending air 



2. expansion of descending air 



3. contraction of ascending air 



4. compression of descending air 



9-49. The Santa Ana wind of southern California 

 is a good example of a 



1. glacier wind 



2. funnel effect 



3. foehn effect 



4. katabatic wind 



55 



