Challenge Questions PPL Sec 6.

The conditions necessary for the formation of cumulonimbus clouds are a lifting action and
A) unstable, moist air.
B) unstable air containing an excess of condensation nuclei.
C) either stable or unstable air.

Question: 3434 Subject Code: I30
What feature is normally associated with the cumulus stage of a thunderstorm?
A) Frequent lightning.
B) Roll cloud.
C) Continuous updraft.

Question: 3435 Subject Code: I30
Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?
A) Precipitation beginning to fall.
B) The appearance of an anvil top.
C) Maximum growth rate of the clouds.

Question: 3436 Subject Code: I30
What conditions are necessary for the formation of thunderstorms?
A) High humidity, lifting force, and unstable conditions.
B) Lifting force, moist air, and extensive cloud cover.
C) High humidity, high temperature, and cumulus clouds.

Question: 3437 Subject Code: I30
During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?
A) Dissipating.
B) Mature.
C) Cumulus.

Question: 3438 Subject Code: I30
Thunderstorms reach their greatest intensity during the
A) mature stage.
B) cumulus stage.
C) downdraft stage.

Question: 3439 Subject Code: I30
Thunderstorms which generally produce the most intense hazard to aircraft are
A) warm front thunderstorms.
B) steady-state thunderstorms.
C) squall line thunderstorms.

Question: 3440 Subject Code: I30
A nonfrontal, narrow band of active thunderstorms that often develop ahead of a cold front is a known as a
A) dry line.
B) prefrontal system.
C) squall line.

Question: 3441 Subject Code: I30
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) Wind-shear turbulence.
B) Steady rain.
C) Precipitation static.

Question: 3442 Subject Code: I30
Upon encountering severe turbulence, which flight condition should the pilot attempt to maintain?
A) Constant altitude and airspeed.
B) Level flight attitude.
C) Constant angle of attack.

Question: 3443 Subject Code: I31
What situation is most conducive to the formation of radiation fog?
A) The movement of cold air over much warmer water.
B) Warm, moist air over low, flatland areas on clear, calm nights.
C) Moist, tropical air moving over cold, offshore water.

Question: 3444 Subject Code: I31
If the temperature/dewpoint spread is small and decreasing, and the temperature is 62 °F, what type weather is most likely to develop?
A) Thunderstorms.
B) Fog or low clouds.
C) Freezing precipitation.

Question: 3445 Subject Code: I31
In which situation is advection fog most likely to form?
A) A light breeze blowing colder air out to sea.
B) An air mass moving inland from the coast in winter.
C) A warm, moist air mass on the windward side of mountains.

Question: 3446 Subject Code: I31
What types of fog depend upon wind in order to exist?
A) Advection fog and upslope fog.
B) Steam fog and ground fog.
C) Radiation fog and ice fog.

Question: 3447 Subject Code: I33
Low-level turbulence can occur and icing can become hazardous in which type of fog?
A) Steam fog.
B) Rain-induced fog.
C) Upslope fog.