Tower Front Load questions with correct answers

Which one do you use if the tower and surface observations for prevailing visibility differ? - Answer 1. Use the lower of the two observations (tower or surface) for aircraft operations When must prevailing visibility observations be taken? - Answer When the prevailing visibility at the usual point of observation, or at the tower level, is less than 4 miles, tower personnel must take prevailing visibility observations and apply the observations as follows: What unit is prevailing visibility reported in? - Answer Statute miles Define Prevailing Visibility - Answer The greatest horizontal visibility equaled or exceeded throughout at least half the horizon circle which need not necessarily be continuous. Describe the difference between flight, ground, and prevailing visibility - Answer Flight Visibility− The average forward horizontal distance, from the cockpit of an aircraft in flight, at which prominent unlighted objects may be seen and identified by day and prominent lighted objects may be seen and identified by night. Ground Visibility− Prevailing horizontal visibility near the earth's surface as reported by the United States National Weather Service or an accredited observer. Prevailing Visibility− The greatest horizontal visibility