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CPL Test Series
Question Bank
Questions for INDIGO METEOROLOGY(3272-4089)
Answer the following questions
Test Mode
Training Mode
1.
How would you characterise an air temperature of -55°C at the 200 hPa level over western Europe?
Within +/-5°C of ISA
High
Very high
Low
2.
The thickness of the troposphere varies with
longitude
latitude
rotation of the earth
the wind
3.
During which months is the Hurricane season in the Caribbean?
January until April.
July until November.
October until January.
April until July.
4.
A layer in which the temperature remains constant with height is
conditionally unstable
neutral
absolutely stable
unstable
5.
The arrows labelled ""u"" represent the tracks of tropical revolving storms which occur mainly from
December to April and are called tornadoes
May to July and are called cyclones
July to October and are called typhoons
January to March and are called willy-willies
6.
Examining the pictures, on which one of the tracks (dashed lines) is this cross-section to be expected?
Track B-C
Track A-D
Track A-E
Track B-D
7.
The dry adiabatic lapse rate has a value of
2°C/1000FT
0.65°C/100m
1°C/100m
0.5°C/100m
8.
The wind speed in a system with curved isobars compared to a system with straight isobars is (other conditions being the same)
always lower
always higher
higher if curvature is cyclonic
higher if curvature is anticyclonic
9.
During the climb after takeoff, the altimeter setting is adjusted at the transition altitude. If the local QNH is 966 hPa, what will happen to the altimeter reading during the resetting procedure?
It will decrease
It will increase
It is not possible to give a definitive answer
It will remain the same
10.
At approximately what altitude is the subtropical jet stream found over Europe?
FL 300
FL 400
FL 200
FL 500
11.
You have been flying for some time in dense layered cloud. The outside air temperature is -25°C. Which of the following statements is true?
In a dense layered cloud icing is unlikely also at an outside air temperature of -5°C
Severe airframe icing is quite likely under these conditions
Severe airframe icing is unlikely under these conditions
If you do not have weather radar on board there is no need to worry, as CB is unlikely to form in such cloud
12.
An outside air temperature of -35°C is measured while cruising at FL 200. What is the temperature deviation from the ISA at this level?
10°C colder than ISA.
10°C warmer than ISA.
5°C warmer than ISA.
5°C colder than ISA.
13.
What is a SPECI?
A routine aerodrome weather report issued every 3 hours.
A routine aerodrome weather report issued every 3 hours.
A selected special aerodrome weather report, issued when a significant change of the weather conditions have been observed.
An aerodrome forecast issued every 9 hours.
14.
The average height of the tropopause at 50°N is about
11 km
14 km
16 km
8 km
15.
The isobars drawn on a surface weather chart represent lines of equal pressure
at height of observatory
reduced to sea level
at flight level
at a determined density altitude
16.
You are flying at 2 500 FT/AGL, with a southerly wind, and intend to land at an airport, at sea level directly below. From approximately which direction would you expect the surface wind (mid-latitude, northern hemisphere)?
South.
South-southeast.
South-southwest.
Southwest.
17.
Which weather phenomena are typical for the northern side of the Alps with stormy winds from the south (Foehn)?
Decrease in temperature, moderate to severe icing.
Continuous precipitation, severe turbulence.
Icing, huge mass of clouds.
Good visibility, turbulence.
18.
The temperature at FL 110 is -5°C. What will the temperature be at FL 50 if the ICAO standard lapse rate is applied ?
0°C
+3°C
-3°C
+7°C
19.
A wind speed of 350 kt within a jet stream core should be world-wide regarded as
a common occurence.
possible but a very rare phenomenon.
not unusual in polar regions.
not possible.
20.
How do air masses move at a warm front ?
Cold air overrides a warm air mass
Warm air overrides a cold air mass
Warm air undercuts a cold air mass
Cold air undercuts a warm air mass
21.
Select the answer which you consider will complete correctly the following statement in relation to the main pressure systems affecting the North Atlantic region between 30°N and 65°N. During winter the predominant mean low pressure system at the surface is usually centred over
Azores
USA
Iceland / Greenland
Siberia
22.
Throughout the year to the south of the Azorian high
a constant outside air temperature
long streaks of cirrus clouds.
dust or haze at high level
a high-pressure centre at high level
23.
When the subscale is set to the QNH of an airfield the pressure altimeter indicates
zero while landing only if conditions are as in the International Standard Atmosphere
zero while landing
elevation while landing only if conditions are as in the International Standard Atmosphere
elevation while landing
24.
Which of the following describes a warm occlusion?
The air mass ahead of the front is drier than the air mass behind the front
The warmer air mass is ahead of the original warm front
The coldest air mass is ahead of the original warm front
The air mass behind the front is more unstable than the air mass ahead of the front
25.
An inversion is a layer of air which is
absolutely stable
absolutely unstable
conditionally stable
conditionally unstable
26.
What cloud formation is most likely to occur at low levels when a warm air mass overrides a cold air mass?
Cumulus.
Altostratus.
Cumulonimbus.
Nimbostratus.
27.
A 500 hPa pressure level can vary in height. In temperate regions which of the following average heights is applicable ?
FL 100
FL 180
FL 390
FL 160
28.
The most dangerous low level wind shears are encountered
during any period when wind speed is greater than 35 kt and near valleys
in areas with layered clouds and wind speeds higher than 35 kt
when strong ground inversions are present and near thunderstorms
near valleys and at the windward side of mountains.
29.
The sea breeze is a wind from the sea
that reaches up to the tropopause in daytime
blowing at night in mid-latitudes
occurring only in the lower layers of the atmosphere in daytime
occurring only in mid-latitudes and in daytime
30.
What type of air movement is associated with the centre line of a trough?
Divergence with lifting.
Convergence with descending air.
Convergence with lifting.
Divergence with descending air.
31.
Which of the following statements is an interpretation of the SIGMET ?SIGMET VALID 121420/121820 embd ts obs and fcst in w part of athinai fir / mov e / intst nc =
Thunderstorms must be expected in the western part of the Athens FIR. The thunderstorm zone is moving east. Intensity is constant
Athens Airport is closed due to thunderstorms. The thunderstorm zone should be east of Athens by 1820 UTC
Thunderstorms have formed in the eastern part of the Athens FIR and are slowly moving west
The thunderstorms in the Athens FIR are increasing in intensity, but are stationary above the western part of the Athens FIR
32.
If Paris reports a wind of 19015KT on the METAR, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?
25025KT
22030KT
22010KT
22030KT
33.
At which position could you encounter thunderstorms, and what is the maximum height of the CB clouds?
Position B, FL 270.
Position A, FL 200.
Position D, FL 290.
Position C, FL 200.
34.
During which stage of thunderstorm development are rotor winds characterized by roll clouds most likely to occur ?
Mature stage.
Cumulus stage and mature stage.
Dissipating stage.
Cumulus stage.
35.
If you have to fly through a warm front when freezing level is at 10000 feet in the warm air and at 2000 feet in the cold air, at which altitude is the probability of freezing rain the lowest ?
3000 feet
9000 feet
12000 feet
5000 feet
36.
How would you characterise an air temperature of -30°C at the 300 hPa level over western Europe?
Very low
High
Within +/-5°C of ISA
Low
37.
A moist but unsaturated parcel of air becomes saturated by
lifting the parcel to a higher level
lowering the parcel to a lower level
moving the parcel to an area with higher pressure and equal temperature
moving the parcel to an area with lower pressure and equal temperature
38.
A wide body takes off on a clear night in Dhahran, Saudi Arabia. Shortly after take off the aircraft's rate of climb drops to zero. This can be due to
sand/dust in the engines
low relative humidity
a very strong temperature inversion
very pronounced downdrafts
39.
If the pressure surfaces bulge upwards in all levels then the pressure system is a
cold low
cold high
warm low
warm high
40.
What is the temperature deviation in degrees Celsius, from the International Standard Atmosphere overhead Frankfurt ?
ISA -4°C
ISA +12°C
ISA -12°C
ISA +4°C
41.
An aircraft is approaching under visual flight rules an airfield whose runway is parallel to the coast. When downwind over the sea, the airfield is on the left. What wind effect should be anticipated on final approach and landing during a sunny afternoon ?
Headwind
Tailwind
Crosswind from the left
Crosswind from the right
42.
On a clear sky, continental ground surface, wind calm, the minimum temperature is reached approximately
half an hour before sunrise
half an hour after sunrise
one hour before sunrise
at the moment the sun rises
43.
When does frontal fog, also known as mixing fog, occur?
When very dry cold air meets with very dry warm air.
When very humid warm air meets with dry cold air.
When very humid cold air meets with dry warm air.
When very humid warm air meets with very humid cold air.
44.
A cumulonimbus cloud at moderate latitudes in summer contains
only ice crystals
only water droplets
a combination of ice crystals, water droplets and supercooled water droplets
a combination of ice crystals and water droplets
45.
Which of the following weather reports could be, in accordance with the regulations, abbreviated to ""CAVOK""? (MSA above ground : LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT)
LSZB 28012KT 9999 OVC100 16/12 Q1012 BECMG 5000 =
LSZH VRB02KT 9000 BKN080 21/14 Q1022 NOSIG =
LSGG 22006KT 9999 BKN090 17/15 Q1008 RERA NOSIG =
LFSB 24008KT 9999 SCT050 18/11 Q1017 RERA NOSIG =
46.
A zone of strong convection currents is encountered during a flight. In spite of moderate gust you decide to continue the flight. What are your precautionary measures?
Increase the speed / try to descend below the zone of convective currents.
Decrease the speed / try to climb above the zone of convective currents if aircraft performance parameters allow.
Decrease the speed / try to descend below the zone of convective currents.
Increase the speed / try to climb above the zone of convective currents if aircraft performance parameters allow.
47.
Which one of the following statements applies to the tropopause?
It separates the troposphere from the stratosphere
It is, by definition, a temperature inversion
It indicates a strong temperature lapse rate
It is, by definition, an isothermal layer
48.
The environmental lapse rate in an actual atmosphere
has a fixed value of 1°C/100m
varies with time
has a fixed value of 0.65°C/100m
has a fixed value of 2°C/1000 FT
49.
Altostratus clouds are classified as
high level clouds
low level clouds
medium level clouds
convective clouds
50.
Relative humidity
does not change when water vapour is added provided the temperature of the air remains constant.
not affected by temperature changes of the air.
changes when water vapour is added, even though the temperature remains constant.
is not affected when air is ascending or descending.
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