IN  ANSWERING  QUESTIONS  11-40  THROUGH  11-43 SELECT THE DESCRIPTION FROM COLUMN B THAT MATCHES THE WIND IN COLUMN A. RESPONSES WILL BE USED ONLY ONCE. A.  WIND B.  DESCRIPTION 11-40. 11-41. 11-42. Tradewinds 1.  On  the  poleward side of the Horse tradewinds;  are latitudes persistent through mid- Prevailing latitudes westerlies 2.  North  and  south 11-43. Polar  region of the doldrums 3.  Areas of sub- tropical  high pressure, 30°-40°N 4.  Move from the northeast  in  the Northern Hemisphere  and from the southeast  in the Southern Hemisphere 11-44. Which  of  the  following  particles is NOT found in the atmosphere? 1. Salt 2. Sand 3. Dust 4. Plant  resin 11-45. Water vapor forms in clouds by what  basic  process? 1. Crystallization 2. Distillation 3. Evaporation 4. Condensation 11-46. Which  of  the  following  conditions is NOT necessary for clouds to form? 1. Wind 2. Moisture 3. A  cooling  process 4. Hygroscopic  nuclei 11-48. 11-49. 11-50. 11-51. 11-52. 11-53. The  low-etage  clouds  form  from  the surface up to how many feet? 1. 5,000 2. 5,700 3. 6,500 4. 8,000 The  mid-etage  clouds  occur  in  what altitude  range,  in  feet? 1. 5,000 to 13,000 2. 5,700 to 15,000 3. 6,500 to 18,500 4. 8,000 to 20,000 The high-etage clouds occur in what  altitude  range,  in  feet? 1. 13,000 to 50,000 2. 15,000 to 30,000 3. 18,500 to 45,000 4. 20,000 to 50,000 Clouds described as thin and feather-like  are  identified  by what name? 1.    Cirrus 2. Stratus 3. Cumulus 4.    Nimbostratus What  type  of  clouds  are  associated with  the  term  "mackerel  sky"? 1. Cirrostratus 2. Cumulonimbus 3. Stratocumulus 4. Cirrocumulus What  type  of  weather  is  generally associated  with  cirrostratus clouds? 1. Fog 2. Fair 3. Clear  and  cold 4. Rain 11-54. What type of cloud is composed of flattened  globular  masses  being fairly small and thin? 1. Altocumulus 2. Altostratus 3. Cirrocumulus 4. Stratocumulus 11-47. Fog is merely a cloud on the ground. 1. True 2. False 74