4-33. The wind shift across a quasi-stationary front is on the order of how many degrees? 1. 45 2. 90 3. 135 4. 180 4-34. Which   of   the   following   statements   is   true concerning  the  winds  above  the  friction  level over a quasi-stationary front? 1. They parallel the front 2. They are more or less perpendicular to the front 3. They are non-existent 4. They parallel the front in the warm air only 4-35. The  weather  along  a  quasi-stationary  front  is dependent on which of the following conditions? 1. The steepness of the frontal slope 2. The stability of the warm air 3. Undulations of the front toward the warm air 4. All of the above conditions 4-36. Which,   if   any,   of   the   following   types   of weather  is  associated  with  a  quasi-stationary front  when  stable,  warm  air  is  advected  up  a steep frontal slope? 1. Tornadoes 2. Thunderstorms 3. Embedded showers 4. None of the above 4-37. The   most   violent   weather   associated   with quasi-stationary fronts occurs when 1. stable  warm  air  is  advected  up  a  steep frontal slope 2. unstable warm air is advected up a shallow frontal slope 3. unstable  warm  air  is  advected  up  a  steep frontal slope 4. stable  warm  air  is  advected  up  a  shallow frontal slope 4-38. Which,   if   any,   of   the   following   effects   of frontal speed on weather is correct? 1. Fast-moving   fronts   usually   produce   the most violent weather 2. The return to favorable weather conditions takes place much quicker with a slow-moving front 3. A   front   whose   speed   is   erratic   creates varying  weather  conditions,  and  is  much easier to forecast 4. None of the above 4-39. Which  of  the  following  aspects  of  a  front  is affected by mountain ranges? 1. Speed 2. Slope 3. Weather 4. Each of the above 4-40. With  regard  to  precipitation,  a  cold  front  that approaches and crosses a mountain range will generally 1. show a decrease in precipitation intensity 2. have its area of precipitation narrowed 3. produce  greater  amounts  of  precipitation on the leeward side 4. produce  greater  amounts  of  precipitation on the windward side 4-41. Which   of   the   following   occurrences   takes place    when    a    warm    front    encounters    a mountain range? 1. The  warm  air  above  the  frontal  surface  is mechanically lifted producing severe thunderstorms 2. The frontal slope is drastically changed at higher altitudes 3. The front becomes more or less stationary on the leeward side 4. The  cold  air  beneath  the  frontal  surface gets cut off on the windward side 4-42. Mountain ranges prolong warm frontal precipitation and widen the precipitation area. 1. True 2. False 22