5-47. Which  approach  to  climatology  provides  the most   useful   information   to   Aerographer’s Mates in their travels around the world? 1. Physical climatology 2. Descriptive climatology 3. Dynamic climatology 4. Mesoclimatology 5-48. Which   of   the   following   types   of   climatic studies  is  usually  likely  be  used  to  position runways for a new naval air station? 1. Microclimatology 2. Mesoclimatology 3. Macroclimatology 4. Physical climatology 5-49. Of  the  following  climatic  elements,  which  is considered to be the most important? 1. Pressure 2. Temperature 3. Wind 4. Precipitation 5-50. Moisture  modifies  temperature,  while,  at  the same time, it is also influenced by temperature. 1. True 2. False 5-51. In most countries of the world, the amount of precipitation in climatic studies is expressed in what increments? 1. Inches 2. Centimeters 3. Millimeters 4. Centiliters 5-52. What are resultant winds? 1. The wind directions and speeds for a given level in the atmosphere 2. The vectorial average of all wind directions and speeds for a given period of time 3. The vectorial average of all wind directions and speeds for a given period of time, at a specific place 4. The   wind   directions   and   speeds   for   a specific place 5-53. Which of the following climatic terms is being determined    when    the    highest    and    lowest temperatures of the day are added together and divided by 2? 1. Mean 2. Mode 3. Median 4. Normal 5-54. The extreme lowest temperature ever recorded at your station is -22°F. Which of the following climatic terms applies to this temperature? 1. Extreme low 2. Absolute low 3. Absolute minimum 4. Extreme absolute minimum 5-55. What   temperature   is   normally   used   as   the standard base temperature in computing heating degree days? 1. 85°F 2. 75°F 3. 65°F 4. 60°F 5-56. On the first day of your local power company’s heating  season,  five  heating  degree  days  are measured. What does this number represent? 1. The  number  of  kilowatts  of  energy  used above the average number required to cool to a standard temperature 2. The   difference   between   the   first   day’s mean    temperature    and    a    temperature standard 3. An index of required energy 4. Standard deviation 5-57. Which  of  the  following  statements  is  correct with regard to average and standard deviation? 1. (+    or    -)    signs    are    critical    in    these computations 2. Average deviations use arithmetic averages of data, while standard deviations use actual measurements 3. A standard deviation is the square root of an average of squared mean deviations 29