In items 9-20 through 9-23, select from column B 

 the northernmost boundary of each astronomical 

 zone listed in column A. 



A. Zones 



B. Boundaries 



9-20. Torrid 1. Antarctic Circle 



9-21. North Temperate 2. Arctic Circle 



9-22. South Temperate 3. Tropic of Cancer 



9-23. South Polar 4. Tropic of Capricorn 



9-24. Which climatic control(s) is/are most 



important in determining the climate of 

 a region? 



1. Altitude 



2. Latitude 



3. Ocean currents 



A. Mountain barriers 



In items 9-25 through 9-28, select from column B 

 the location on the earth that receives the most 

 perpendicular rays of the sun on each date 

 listed in column A. 



A. Dates 

 9-25. 21 March 

 9-26. 21 June 

 9-27. 22 September 

 9-28. 22 December 



B. Locations 



1. 23 1/2° S lat 



2. Equator 



3. 23 1/2° N lat 



9-29. What is the principal reason for the 



temperature range of ocean areas being 

 less than that of continental areas over 

 a given period of time? 



1. Heat from water is released more 

 evenly than from the land 



2. Heat losses or gains are widely dis- 

 tributed because of the constant 

 motion of water 



3. Because of the ocean's greater spe- 

 cific heat, water will absorb more 

 heat than land for the same rise in 

 temperature 



4. Because of the ocean's surface uni- 

 formity, water will reflect more heat 

 than land for the same rise in 

 temperature 



9-30. Rome and New York are at approximately 

 the same latitude, yet Rome has a much 

 milder winter climate. What factor is 

 MOST responsible for this? 



1. The prevailing westerlies 



2. The east-west orientation of the Alps 

 Mountains 



3. The Mediterranean Sea surrounding 

 Italy on three sides 



4. The north-south orientation of the 

 Apennines Mountains 



9-31. When the movement of an air mass is 



blocked by a mountain range, the weather 

 element that is most affected is 



1. pressure 



2. wind velocity 



3. precipitation 



4. mean daily temperature 



9-32. At which of the following altitudes in 

 the trade wind zone does the greatest 

 amount of rainfall occur? 



1. Sea level 



2. 3,000 ft 



3. 6,000 ft 



4. 10,000 ft 



9-33. What is the principal cause of the ocean 

 currents? 



1. The prevailing winds 



2. The rotation of the earth 



3. The gravitational pull of the sun and 

 the moon 



4. The unequal temperatures of the high 

 and low latitudes 



Learning Objective: Relative to sec- 

 ondary circulations, indicate the 

 effects of their center of action and 

 identify causes, types, locations, 

 and terms associated with migratory 

 systems including characteristics of 

 monsoons and jetstreams. 



9-34. The Atlantic and Pacific highs are most 

 pronounced in which season of the year? 



1. Winter 



2. Spring 



3. Autumn 



4 . Summer 



9-35. The largest individual circulation cell 

 in the Northern Hemisphere during the 

 winter is the 



1. Greenland high 



2. Bermuda high 



3. Asiatic high 



4. Pacific high 



54 



