Jeppesen Stage 2 Test Questions And Answers 2024

How will frost on the wings of an airplane affect takeoff performance? - Answer-Frost will disrupt the smooth flow of air over the wing, adversely affecting its lifting capability. Every physical process of weather is accompanied by, or is the result of, a - Answer-heat exchange A temperature inversion would most likely result in which weather condition? - Answer-an increase in temperature as altitude is increased 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 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 is meant by the term "dewpoint" - Answer-The temperature to which air must be cooled to be saturated. The amount of water vapor which air can hold depends on the - Answer-Air temperature Clouds, fog or dew will always form when - Answer-water vapor condenses What are the processes by which moisture is added to saturated air? - Answer-Evaporation and sublimation What conditions result in the formation of frost? - Answer-The temperature of the collecting surface is at or below the dewpoint of the adjacent air and the dewpoint is below freezing What causes variations in altimeter settings between weather reporting points? - Answer-unequal heating of the Earth's surfaceThe 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. The presence of ice pellets at the surface is evidence that there - Answer-is a temperature inversion with freezing rain at a higher altitude 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 Moist, stable air flowing upslope can be expected to - Answer-produce stratus type clouds If an unstable air mass is forced upward, what type of clouds can be expected? - Answer-Clouds with considerable vertical development and associated turbulence. What feature is associated with temperature inversion? - Answer-a stable layer of air What is the approximate base of the cumulus clouds if the surface air temperature at 1,000 feet MSL is 70 degreesF and the dewpoint is 48degrees F? - Answer-6,000 feet MSL