1. Given this PIREP, "KMOB UA/OV l 5NW MOB 1340Z/SK OVC 025/045 OVC 090," what significant cloud coverage is reported by this pilot? a. Three (3) separate overcast layers exist with bases at 250, 7,500, and 9,000 feet. b. The top of the lower overcast is 2,500 feet; base and top of second overcast layer is 4,500 and 9,000 feet, respectively. c. The base of the second overcast layer is 2,500 feet top of second overcast layer is 7,500 feet; base of third layer is 9,000 feet. 2. Which weather phenomenon signals the beginning of the mature stage of a thunderstorm? a. Growth rate of cloud is maximum. b. The start of rain. c. The appearance of an anvil top. 3. . What feature is normally associated with the cumulus stage of a thunderstorm? a. Roll cloud. b. Continuous updraft. c. Beginning of rain at the surface. 4. What visible signs indicate extreme turbulence in thunderstorms? a. Low ceiling and visibility, hail and precipitation static. b. Cumulonimbus clouds, very frequent lightning, and roll clouds. c. Base of the clouds near the surface, heavy rain, and hail. 5. Each required flight crewmember is required to keep his or her shoulder harness fastened: Select one: a. during takeoff and landing only when passengers are aboard the aircraft. b. during takeoff and landing, unless he or she is unable to perform required duties. c. while the crewmembers are at their stations, unless he or she is unable to perform required duties