5835695
Descripción
Test por tsampikos pompou, actualizado hace más de 1 año
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Creado por tsampikos pompou
hace casi 8 años
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Pregunta 1
Pregunta
110 Fog produced by frontal activity is a result of saturation due to
Respuesta
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O evaporation of precipitation.
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O nocturnal cooling
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O adiabatic cooling.
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O advection of moist air
Pregunta 2
Pregunta
111 Which in-flight hazard is most commonly associated with warm fronts?
Respuesta
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O Precipitation-induced fog.
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O Advection fog.
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O Radiation fog.
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O Steam fog
Pregunta 3
Pregunta
112 In which environment is aircraft structural ice most likely to have the highest accumulation rate?
Respuesta
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O Freezing rain.
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O Cumulus clouds with below freezing tempera¬tures.
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O Freezing drizzle.
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O None of the those
Pregunta 4
Pregunta
113 In what ways do advection fog, radiation fog, and steam fog differ in their formation or location?
Respuesta
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O Radiation fog is restricted to land areas; advection fog is most common along coastal areas; steam fog forms over a water surface.
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O Advection fog deepens as windspeed increases up to 20 knots; steam fog requires calm or very light wind; radiation fog forms when the ground or water cools the air by radiation.
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O Steam fog forms from moist air moving over a colder surface; advection fog requires cold air over a warmer surface; radiation fog is produced by radiational cooling of the ground.
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O None of the those
Pregunta 5
Pregunta
114 . Which conditions are favorable for the formation of a surface based temperature inversion?
Respuesta
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O Clear, cool nights with calm or light wind,
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O Area of unstable air rapidly transferring heat from the surface.
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O Broad areas of cumulus clouds with smooth, level bases at the same altitude
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O Advection of warm moist air
Pregunta 6
Pregunta
115 . What are the characteristics of stable air?
Respuesta
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O Poor visibility; steady precipitation; stratus clouds.
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O Good visibility; steady precipitation; stratus clouds.
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O Poor visibility; intermittent precipitation; cumulus clouds.
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O Good visibility, turbulence, cumulus clouds
Pregunta 7
Pregunta
116 . Which would decrease the stability of an air mass?
Respuesta
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O Warming from below.
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O Cooling from below.
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O Decrease in water vapor.
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O None of those
Pregunta 8
Pregunta
117 . What is a characteristic of stable air?
Respuesta
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O Stratiform clouds.
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O Fair weather cumulus clouds.
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O Temperature decreases rapidly with altitude
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O Cirrus clouds
Pregunta 9
Pregunta
118 . What type weather can one expect from moist, unstable air, and very warm surface temperature?
Respuesta
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O Strong updrafts and cumulonimbus clouds.
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O Fog and low stratus clouds.
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O Continuous heavy precipitation
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O Fair weather and cirrus clouds
Pregunta 10
Pregunta
119 . A moist, unstable air mass is characterized by
Respuesta
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O cumuliform clouds and showery precipitation
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O poor visibility and smooth air.
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O stratiform clouds and continuous precipitation
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O good visibility and stratiform clouds
Pregunta 11
Pregunta
120 . If clouds form as a result of very stable, moist air being forced to ascend a mountain slope, the clouds will be
Respuesta
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O stratus type with little vertical development and little or no turbulence.
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O cirrus type with no vertical development or turbulence
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O cumulus type with considerable vertical development and turbulence.
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O rotor type
Pregunta 12
Pregunta
121 The formation of either predominantly stratiform or predominantly curnuliform clouds is dependent upon the
Respuesta
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O stability of the air being lifted.
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O source of lift
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O temperature of the air being lifted.
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O the difference between surface temperature and due point
Pregunta 13
Pregunta
122 . When an air mass is stable, which of these conditions are most likely to exist?
Respuesta
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O Smoke, dust, haze, etc., concentrated at the lower levels with resulting poor visibility.
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O Numerous towering cumulus and cumulonimbus clouds
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O Moderate to severe turbulence at the lower levels.
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O Updrafts and showery precipitation
Pregunta 14
Pregunta
123 . From which measurement of the atmosphere can stability be determined?
Respuesta
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O The ambient lapse rate.
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O Atmospheric pressure
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O The dry adiabatic lapse rate.
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O The wet ( saturated) adiabatic lapse rate
Pregunta 15
Pregunta
124 [Fig.16] What lifts advection fog into low stratus clouds?
Respuesta
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O Surface winds of approximately 15 knots or stronger.
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O Nighttime cooling.
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O Dryness of the underlying land mass.
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O Updraft
Pregunta 16
Pregunta
125 Which would increase the stability of an air mass?
Respuesta
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O Cooling from below.
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O Warming from below.
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O Decrease in water vapor.
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O Increase in water vapor
Pregunta 17
Pregunta
126 The conditions necessary for the formation of stratiform clouds are a lifting action and
Respuesta
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O stable, moist air.
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O unstable, dry air.
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O unstable, moist air.
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O stable dry air
Pregunta 18
Pregunta
127 What feature is normally associated with the cumulus stage of a thunderstorm?
Respuesta
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O Continuous updraft.
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O Roll cloud
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O Beginning of rain at the surface.
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O Anvil top
Pregunta 19
Pregunta
128 . The conditions necessary for the formation of cumulonimbus clouds are a lifting action and
Respuesta
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O unstable, moist air.
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O unstable, dry air.
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O stable, moist air.
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O stable dry air
Pregunta 20
Pregunta
129 . The most severe weather conditions, such as destructive winds, heavy hail, and tornadoes, are generally associated with
Respuesta
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O squall lines.
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O slow-moving warm fronts which slope above the tropopause.
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O fast-moving occluded fronts.
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O warm sector
Pregunta 21
Pregunta
130 Which statement is true concerning squall lines?
Respuesta
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O They offer the most intense weather hazards to aircraft.
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O They form slowly, but move rapidly.
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O They are associated with frontal systems only.
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O None of the those
Pregunta 22
Pregunta
131 Select the true statement pertaining to the life cycle of a thunderstorm.
Respuesta
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O The beginning of rain at the Earth's surface indicates the mature stage of the thunderstorm
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O Updrafts continue to develop throughout the dissipating stage of a thunderstorm
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O The beginning of rain at the Earth's surface indicates the dissipating stage of the thunderstorm
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O Updrafts develop only throughout the cumulus stage
Pregunta 23
Pregunta
132 . Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?
Respuesta
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O The start of rain.
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O The appearance of an anvil top.
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O Growth rate of cloud is maximum
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O Develop of updraft
Pregunta 24
Pregunta
133 During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?
Respuesta
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O Dissipating.
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O Mature.
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O Developing.
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O All stages
Pregunta 25
Pregunta
134 Refer on the Significant Weather Chart in Fig.14.
The SIGMET of the same day warns:
WSIY31 LIIB 230437
LIMM SIGMET 02 VALID 230500/230700 LIMM-
MILANO FIR EMBD TS FCST ALPINE AREA AND PO VALLEY AT THE
BORDER WITH ALPS MAINLY CENTRAL PART MOV E NC
SEV ICE FCST BTN FL100 AND FL190 MAINLY CENTRAL ALPS AND PREALPINE
AREA MOV SE NC=
For the area of:
Respuesta
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O Italy
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O Turkey
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O UK
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O Scandinavia
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