10-11. Steady precipitation in advance of a 10-17. 

 warm front is associated with which 

 type of clouds? 



1. Cirrus 



2. Nimbostratus 



3. Altostratus 



4. Cirrostratus 



10-12. Which of the following fronts develops 



when a cold front overtakes a warm front 

 and the coldest air is ahead of the 

 warm front? 



1. Warm type occlusion 10-18. 



2. Cold type occlusion 



3. Upper warm front 



4. Stationary front 



10-13. Drizzle from stratiform clouds in a 

 stationary front is associated with 



1. stable warm air 



2. stable cold air 10-19. 



3. unstable cold air 



4. unstable warm air 



Learning Objective: Relative to 

 frontal movement, recognize the 

 effects of zone pressures and 

 cyclonic movement of air in rela- 

 tion to fronts, including the 

 influence of speed, outside air 

 masses, and surface conditions. 



When maritime polar air is moving with a 

 strong westerly wind current and mari- 

 time tropical air is moving with a 

 strong southerly wind current, over- 

 running of the tropical air by the polar 

 air may occur. This generally results in 



1. drizzle and rain 



2. clear skies 



3. heavy showers and violent thunder- 

 storms 



4. heavy stratified cloud development 



A cold front that encounters colder 

 stagnant air after passing a mountain 

 range becomes 



1. a warm front 



2. an occluded front 



3. an upper cold front 



4. a stationary front 



What effect does a mountain range have 

 on the passage of a warm front? 



1. It decreases precipitation on both 

 sides 



2. It increases precipitation on both 

 sides 



3. It decreases precipitation on the 

 windward side and increases it on 

 the leeward side 



4. It increases precipitation on the 

 windward wide and decreases it on 

 the leeward side 



10-14. What types of pressure and air motion 

 are associated with frontal zones? 



1. Low pressure and convergent air 



2. Low pressure and divergent air 



3. High pressure and divergent air 



4. High pressure and convergent air 



10-15. Every moving cyclone usually has two 



significant lines of convergence which 

 are distinguished by their thermal 

 properties. One of these, the warm 

 front, is the discontinuity line that 

 is located 



1. in the rear portion of the cyclone 

 where cold air displaces warm air 



2. on the forward side of the cyclone 

 where warm air replaces cold air 



3. in the rear portion of the cyclone 

 where warm air replaces cold air 



4. on the forward side of the cyclone 

 where cold air displaces warm air 



10-16. How does the weather produced by a slow- 

 moving front compare in severity and 

 duration with the weather produced by a 

 rapidly moving front? 



1. It is more severe and lasts longer 



2. It is less severe but lasts longer 



3. It is less severe and does not last 

 as long 



4. It is more severe but does not last 

 as long 



10-20. The east coast of the United States has 

 much cloudiness and precipitation in 

 winter because of 



1. cold fronts moving out and over 

 warm currents of water 



2. warm fronts moving out and over 

 cold currents of water 



3. the meeting of continental cold 

 fronts and maritime warm fronts 



4. the meeting of the cold currents of 

 water from the polar regions with 

 the warm currents of water from the 

 Equator 



10-21. A front moving from the west over the 

 Rocky Mountains will be regenerated on 

 the eastern side if it encounters 



1. cold, moist air 



2. cold, dry air 



3. warm, moist air 



4. warm, dry air 



10-22. If moist air is not brought into the 



situation, frontal systems moving from 

 water to land will tend to become 



1. modified 



2. dissipated 



3. regenerated 



4. intensified 



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