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Private Pilot Ground School
CH7 #37-56 Gleim Test Book
20
Aviation
04/03/2011

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Cards

Term
Clouds are divided into four families according to therir
Definition
Height range
Term
The suffix "nimbus" used in naming clouds means ...
Definition
a rain cloud
Term
The conditions necessary for the formation of cumulonimbus clouds are lifting action and ...
Definition
unstable. moist air.
Term
what clouds have the greatest turbulence?
Definition
cumulonimbus
Term
what cloud types would indicate convective turbulence?
Definition
towering cumulus clouds
Term
At approximately what altitude above the surface would the pilot expect the base of cumuliform clouds if the surface air temp is 82 F and the depoint is 38 F?
Definition
10,000 feet AGL
Term
what is the approximate base of the cumulus clouds if the surface air temp at 1000 feet MSL is 70 F and the dewpoint is 48 F?
Definition
6000 feet MSL
Term
what is a characteristic of stable air?
Definition
stratiform clouds
Term
moist, stable air flowing upslope can be expected to
Definition
produce startus type clouds
Term
if an unstable air mass is forced upward, what type clouds can be expected?
Definition
clouds with considerable vertical development and associated turbulence
Term
what are characteristics of unstable air?
Definition
turbulence and good surface visibility
Term
a stable air mass is most likely to have which characteristics?
Definition
poor surface visibility
Term
steady preciptiation preceding a front is an indication of
Definition
stratiform clouds with little or no turbulence
Term
what are characteristics of a moist, unstable air mass?
Definition
cumuliform clouds and shower preciptiation
Term
what measurement can be used to determine the stability of the atmosphere
Definition
actual lapse rate
Term
what would decrease the stability of an air mass?
Definition
warming from below
Term
what feature is associated with a temp inversion?
Definition
a stable layer of air
Term
the most frequent type of ground or suface based temperature inversion is that which is produced by
Definition
terrestrial radiation on a clear, relatively still night
Term
A temp inversion would most likely result in which weather condition?
Definition
an increase in temp as altitude is increased
Term
which weather condtions should be expected beneath a low lovel temp inversion layer when the relative humidity is high?
Definition
smooth air, poor visibility, fog, haze, or low clouds.