5866114
Description
Quiz by tsampikos pompou, updated more than 1 year ago
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Created by tsampikos pompou
over 8 years ago
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Question 1
Question
156 Which is true with respect to a high- or low-pressure system?
Answer
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O A high-pressure area or ridge is an area of descending air.
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O A high-pressure area or ridge is an area of rising air.
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O A low-pressure area or trough is an area of descending air.
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O None of those
Question 2
Question
160 Clouds, fog, or dew will always form when
Answer
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O water vapor condenses,
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O water vapor is present.
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O relative humidity reaches 100 percent
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O relative humidity is more than 60 percent
Question 3
Question
166 . If the temperature/dewpoint spread is small and decreasing, and the temperature is 16°C, what type weather is most likely to develop?
Answer
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O Fog or low clouds.
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O Freezing precipitation.
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O Thunderstorms.
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O Fair weather and good visibility
Question 4
Question
171 Why is frost considered hazardous to flight?
Answer
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O Frost spoils the smooth flow of air over the wings, thereby decreasing lifting capability
-
O Frost changes the basic aerodynamic shape of the airfoils, thereby decreasing lift.
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O Frost slows the airflow over the airfoils, thereby increasing control effectiveness.
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O Frost increases the weight of the aircraft
Question 5
Question
181 . Altocumulus Castellanus are clouds that show vertical development and produce towerlike extensions often in the shape of small castles and being associated with:
Answer
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O Bad weather approaching, due to high winds and instability.
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O Stable weather, due they block the high cold winds.
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O Fair weather, generally.
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O None of those
Question 6
Question
185 An aircraft flying at a constant pressure altitude flies from an area of cold
mean temperature to an area of warm mean temperature in the northern
hemisphere. Which of the following is correct:
Answer
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O The aircraft will climb in true height
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O The aircraft will drift to the left
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O The aircraft will descend in true height
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O The aircraft will encounter a thermal tailwind
Question 7
Question
189 A saturated atmosphere has a surface temperature of +12C and a
temperature of +2C at 4000ft. The atmosphere is:
Answer
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O Unstable
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O Stable
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O Conditionally stable
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O Conditionally neutral
Question 8
Question
190
Pressure altitude is:
Answer
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O The height in the standard atmosphere at which the aircraft ambient pressure would be experienced
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O The standard pressure prevailing at official airfield level
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O The height indicated on a pressure altimeter when the sub-scale is set to QFE
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O The height indicated on a pressure altimeter when the sub-scale is set to QNH
Question 9
Question
191 Latent heat is defined in meterology as:
Answer
-
O The quantity of heat emitted when condensation occurs which increases the temperature of the air
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O The quantity of heat absorbed decreasing the lapse rate of saturated air
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O lapse rate in dry air
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O The quantity of heat emitted which increases the lapse rate of saturated air
Question 10
Question
193 As air is cooled to below its dew point temperature:
Answer
-
O The actual water vapour content decreases to remain equal to the saturated water vapour content
-
O The actual water vapour content increases to remain equal to the
-
O The saturated water vapour content remains constant as the air is at 100% relative humidity
-
O The saturated water vapour content increases as precipitation takes place when the temperature drops
Question 11
Question
200 With relation to isobars on the sea level chart, surface wind:
Answer
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O Is inclined towards the area of low pressure
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O Is inclined towards the area of high pressure
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O Blows along the isobars with high pressure to the right in the northern hemisphere
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O Blows along the isobars with high pressure to the left in the northern hemisphere
Question 12
Question
201 Subsidence in an anticyclone produces:
Answer
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O Dry air and an inversion
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O Saturated air and an inversion
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O Isothermal dry and stable air
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O Increased pressure at the surface
Question 13
Question
202 Frontal fog:
Answer
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O Occurs in a narrow band where the frontal surface meets the ground
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O Occurs in precipitation at a cold front
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O Is due to evaporation of rain drops in the cold sector
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O Is due to rain saturating the warm sector air
Question 14
Question
206 If the relative humidity of a sample of air is 100%, then the actual amount of water vapour present would be:
Answer
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O Greater at the Equator than at the poles
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O Greater at the poles than at the Equator
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O The same at the Equator as at the poles
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O Greater at 10000ft than at mean sea level
Question 15
Question
208 A ridge of high pressure is generally associated with:
Answer
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O Divergence and subsidence causing clear skies and good weather
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O Divergence causing cloud to break up and more precipitation
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O Convergence causing increased cloud and precipitation
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O Divergence causing increased cloud and precipitation
Question 16
Question
209 Low cloud in temperate climates, excluding heap, are those existing from:
Answer
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O The surface to 6500ft
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O 1000ft to 6500ft
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O The surface to 7500ft
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O The surface to 7500 metres
Question 17
Question
211 Stratus cloud of limited depth at a temperature of -5C will most likely give:
Answer
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O Light to moderate rime ice
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O Moderate to heavy rime ice
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O Light to moderate glaze ice
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O Moderate to heavy glaze ice
Question 18
Question
214 For a given pressure gradient the strongest wind will be the…………………………. wind, around a ……………………. pressure region in latitude………………………….. The words to fill in the blanks are:
Answer
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O Gradient high 30N
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O Geostrophic low 30N
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O Gradient high 60N
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O Geostrophic low 60N
Question 19
Question
215 A katabatic wind is a wind which:
Answer
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O Flows down a hill or mountain during the night
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O Flows up a hill or mountain during the day
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O Flows up a hill or mountain during the night
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O Flows down a hill or mountain during the day
Question 20
Question
216 What is the forecast weather for the period 1700-1800 UTC? FCGR31 LGAT 1019 20018G30KT 9999 RA SCT050 BKN080 TEMPO 1015 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT 4000 RA OVC010 =
Answer
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O Rain
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O Light drizzle
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O Rain and intermittent drizzle
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O Rain and continuous drizzle
Question 21
Question
217 FCGR31 LGAT 1019 20018G30KT 9999 RA SCT050 BKN080 TEMPO 1015 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT 4000 RA OVC010 =The forecast visibility for the period 1200-1500 UTC is:
Answer
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O More than 10km, temporarily 6000m
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O More than 10km becoming 4000m
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O More than 10km becoming 6000m
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O 6000m becoming 4000m
Question 22
Question
218 Hail occurs when:
Answer
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O Supercooled water droplets freeze
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O Water vapour changes directly into ice
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O Rain drops freeze on falling from a CB
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O Snowflakes melt and then re-freeze
Question 23
Question
219 . Which of the following best describes the first stage of development of sea breeze?
Answer
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O Pressure intially rises over the land
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O Temperature initially falls over the land
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O Warm air rises over land so cold air moves in from the sea to replace it
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O Pressure initially falls at the surface over the sea
Question 24
Question
221 An aerodrome METAR for 0350 UTC during November in Greece is:
SA GR31 LGLR
Surface wind 15005kt
Visibility 2000m
Weather Nil
Temperture 9?C
Dewpoint 8?C
QNH 1024 hPa
Trend NOSIG
Given that sunrise is at 0500UTC, during the two hours following the report, the most probable meteorological condition to develop would be:
Answer
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O radiation fog
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O CAVOK
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O Advection fog
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O a very low cloud base
Question 25
Question
222 Lenticular clouds observed above the top of a range of hills or mountain tops [Fig.42], as seen from an A/C that is approaching from the leeward side of the range, indicate the possibility of:
Answer
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O strong downdraughts immediately before the ridge of the range is reached, with turbulence and strong updraughts after passing the ridge to the windward side.
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O strong katabatic up currents above the tops of the hills.
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O strong katabatic downdraughts and turbulence after the ridge is passed.
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O strong anabatic up currents above the tops of the hills.
Question 26
Question
229 Which of the following is normally associated with drizzle?
Answer
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O Stratus.
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O Cumulonimbus and nimbostratus.
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O Cirrostratus and stratocumulus.
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O Nimbostratus.
Question 27
Question
231 The wind at 10OOft during the day at an inland aerodrome iwas 33015kt. Using a rule of thumb, what would you expect the surface wind to have been?
Answer
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O 31012kt.
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O 35008kt.
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O 3201 Okt.
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O 30005kt
Question 28
Question
233 At about 1400UTC under clear skies at an inland aerodrome, the surface wind was observed to be 22025kt. The most likely wind velocity at 2000ft agl would be:
Answer
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O 24035kt.
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O 26040kt.
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O 22020kt.
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O 23030kt.
Question 29
Question
235 A low level temperature inversion, for example between the surface and 2000ft agl, may produce:
Answer
-
O turbulence between the surface and 2000ft.
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O an on-shore breeze at night.
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O good visibility by day due to a steep temperature gradient.
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O light to moderate icing if the inversion prevails after sunset due to warmer air aloft and associated high moisture content.
Question 30
Question
237 A pressure gradient stimulates the motion of air from
Answer
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O a region of high pressure to a low pressure region.
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O a region of low pressure to a cyclonic region.
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O region of low pressure to a region of high pressure.
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O a cyclonic region to an anticyclonic region.
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