341. - PLT301
The most frequent type of ground or surface-based temperature inversion is that which is produced
by
A) terrestrial radiation on a clear, relatively still night.
B) warm air being lifted rapidly aloft in the vicinity of mountainous terrain.
C) the movement of colder air under warm air, or the movement of warm air over cold air.
和訳 ： Inversionの解説
342. - PLT301
Which weather conditions should be expected beneath a low-level temperature inversion layer
when the relative humidity is high?
A) Smooth air, poor visibility, fog, haze, or low clouds.
B) Light wind shear, poor visibility, haze, and light rain.
C) Turbulent air, poor visibility, fog, low stratus type clouds, and showery precipitation.
和訳 ： Inversionの解説
343. - PLT495
Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?
A) The appearance of an anvil top.
B) Precipitation beginning to fall.
C) Maximum growth rate of the clouds.
和訳 ： Thunderstormのお話
344. - PLT192
The conditions necessary for the formation of cumulonimbus clouds are a lifting action and
A) unstable air containing an excess of condensation nuclei.
B) unstable, moist air.
C) either stable or unstable air.
和訳 ： Thunderstormのお話
345. - PLT495
What conditions are necessary for the formation of thunderstorms?
A) High humidity, lifting force, and unstable conditions.
B) High humidity, high temperature, and cumulus clouds.
C) Lifting force, moist air, and extensive cloud cover.
和訳 ： Thunderstormのお話
346. - PLT495
During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?
A) Cumulus.
B) Dissipating.
C) Mature.
和訳 ： Thunderstormのお話
347. - PLT495
Thunderstorms reach their greatest intensity during the
A) mature stage.
B) downdraft stage.
C) cumulus stage.
和訳 ： Thunderstormのお話
348. - PLT495
Thunderstorms which generally produce the most intense hazard to aircraft are
A) squall line thunderstorms.
B) steady-state thunderstorms.
C) warm front thunderstorms.
和訳 ： Thunderstormのお話
349. - PLT495
A nonfrontal, narrow band of active thunderstorms that often develop ahead of a cold front is a
known as a
A) prefrontal system.
B) squall line.
C) dry line.
和訳 ： Thunderstormのお話
350. - PLT495
If there is thunderstorm activity in the vicinity of an airport at which you plan to land, which
hazardous atmospheric phenomenon might be expected on the landing approach?
A) Precipitation static.
B) Wind-shear turbulence.
C) Steady rain.
和訳 ： Thunderstormのお話
