ASA Private Pilot 2020 Test Prep (Chapter 6) Solved 100%

Every physical process of weather is accompanied by, or is the result of, a - Answer heat exchange What causes variations in altimeter settings between weather reporting points? - Answer Unequal heating of the Earth's surface The wind at 5,000 feet AGL is southwesterly while the surface wind is southerly. This difference in direction is primarily due to - Answer friction between the wind and the surface Convective circulation patterns associated with sea breezes are caused by - Answer cool, dense air moving inland from over the water When there is a temperature inversion, you would expect to experience - Answer an increase in temperature as altitude increases The most frequent type of ground or surface-based temperature inversion is that which is produced by - Answer terrestrial radiation on a clear, relatively still night What are the processes by which moisture is added to unsaturated air? - Answer Evaporation and sublimation If the temperature/dewpoint spread is small and decreasing, and the temperature is 62 degrees F, what type of weather is most likely developing - Answer Fog or low clouds One of the most easily recognized discontinuities across a front is - Answer a change in temperature One weather phenomenon which will always occur when flying across a front is a change in the - Answer wind direction Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high? - Answer Smooth air, poor visibility, fog, haze, or low clouds What measurement can be used to determine the stability of the atmosphere? - Answer Actual lapse rate What would decrease the stability of an air mass? - Answer Warming from below What is a characteristic of stable air? - Answer Stratiform clouds What feature is associated with a temperature inversion? - Answer A stable layer of air What are characteristics of a moist, unstable air mass? - Answer Cumuliform clouds and showery precipitation What are characteristics of unstable air? - Answer Turbulence and good surface visibility. A stable air mass is most likely to have which characteristic? - Answer Poor surface visibility