ATSC 113 Flying Midterm Quiz Questions and Answers

ATSC 113 Flying Midterm Quiz Questions and Answers clouds formed by humans--contrails (cirrus homogenitus) - Answer--indicate turbulent wingtip vortices behind aircraft and strong wake turbulence -form from aircraft condensation trails fraction of the sky (celestial dome) covered by clouds is called... - Answer-sky cover, cloud cover, or cloud amount measured in eighths (oktas) the altitude of cloud base for the lowest cloud with coverage >= 5 oktas (broken or overcast) is considered the ceiling (ceiling will be height above ground level of lowest cloud base under 20'000ft) for obscured sky, the vertical visibility distance is reported as a ceiling instead sky cover by oktas - Answer-0: clear 1-2: few 3-4: scattered 5-7: broken 8: overcast 9: obscured ceilings are measured with: - Answer--traditional ceilomoters (searchlights at different angles, and trigonometry) -laser ceilometers (burst of light, measure time to reflect back) -ceiling balloons -pilot reports -weather-observer estimates CAVOK = - Answer-Ceiling and Visibility are OK visibility is OK or visibility is unlimited also indicates the visibility is 10km or greater vertical visibility - Answer-distance looking straight up or down