Meteorology (Questions) For CPL/ ATPL


METEOROLOGY QUESTIONS FOR CPL/ ATPL

1 The average height of the tropopause at 50°N is about
A 14 km
B 16 km
C 11 km
D 8 km

2 In the lower part of the stratosphere the temperature
A is almost constant
B decreases with altitude
C increases with altitude
D increases at first and decreases afterward

3 The environmental lapse rate in an actual atmosphere
A has a fixed value of 0.65°C/100m
B has a fixed value of 2°C/1000 FT
C varies with time
D has a fixed value of 1°C/100m

4 In order to reduce QFE to QNH, which of the following item(s) must be known ?
A Elevation of the airfield and the temperature at the airfield
B Elevation of the airfield and the temperature at MSL
C Temperature at the airfield
D Elevation of the airfield

5 In what hPa range is an upper weather chart for FL 340 situated?
A 500 – 400 hPa
B 600 – 500 hPa
C 300 – 200 hPa
D 400 – 300 hPa

6 An aircraft is flying at FL 180 in the northern hemisphere with a crosswind from the left. Which of the following is correct concerning its true altitude ?
A It increases
B It decreases
C Without knowing temperatures at FL 180 this question can not be answered.
D It remains constant

7 For a similar pressure gradient, the geostrophic wind speed will be
A greater at 60°N than at 30°N
B greater at 30°N than at 60°N
C equivalent to gradient wind ± thermal component
D the same at all latitudes north or south of 15°

8 Between which latitudes are you most likely to find the subtropical high-pressure belt ?
A 25° – 35°.
B 10° – 15°.
C 35° – 55°.
D 55° – 75°.

9 Friction between the air and the ground results in the northern hemisphere in:
A backing of the wind and decrease of wind speed at the surface.
B veering of the wind and decrease of wind speed at the surface.
C backing of the wind and increase of wind speed at the surface.
D veering of the wind and increase of wind speed at the surface.

10 The sea breeze is a wind from the sea
A that reaches up to the tropopause in daytime
B occurring only in the lower layers of the atmosphere in daytime
C occurring only in mid-latitudes and in daytime
D blowing at night in mid-latitudes

 

METEOROLOGY QUESTIONS FOR CPL/ ATPL

11 The core of the polar front jet stream is usually located in the
A polar air above the tropopause
B tropical air below the tropopause
C tropical air above the tropical tropopause
D polar air below the tropopause

12 When and where is an easterly jet stream likely to be encountered ?
A In summer from south-east Asia extending over southern India to central Africa.
B In winter along the Russian coast facing the Arctic ocean.
C In summer from the Middle East extending over the southern part of the Mediterranean to southern Spain.
D Throughout the year to the south of the Azorian high.

13 Dew point is defined as
A the lowest temperature at which evaporation will occur for a given pressure
B the temperature to which moist air must be cooled to become saturated at a given pressure
C the temperature below which the change of state in a given volume of air will result in the absorption of latent heat
D the lowest temperature to which air must be cooled in order to reduce the relative humidity

14 Supercooled droplets can occur in
A precipitation but not in clouds
B clouds but not in fog
C clouds, fog and precipitation
D clouds but not in precipitation

15 A moist but unsaturated parcel of air becomes saturated by
A lifting the parcel to a higher level
B lowering the parcel to a lower level
C moving the parcel to an area with lower pressure and equal temperature
D moving the parcel to an area with higher pressure and equal temperature

16 Which of the following processes within a layer of air may lead to the building of CU and CB clouds?
A Frontal lifting within stable layers.
B Subsidence.
C Radiation.
D Convection.

17 A cumulonimbus cloud at mid-latitudes in summer contains
A ice crystals and water droplets but never supercooled water droplets
B only ice crystals
C only water droplets
D ice crystals, water droplets and supercooled water droplets

18 Which of the following circumstances most favour the development of radiation fog?
A Advection of very cold air over much warmer sea
B Maritime tropical air flowing over cold sea
C Warm moist air at the windward side of a mountain
D Moist air over land during clear night with little wind

19 Which type of fog is likely to form when air having temperature of 15°C and dew point of 12°C
blows at 10 knots over a sea surface having temperatures of 5°C ?
A Frontal fog
B Steam fog
C Radiation fog
D Advection fog

20 Which one of the following types of cloud is most likely to produce heavy precipitation ?
A ST.
B SC.
C CS.
D NS.

 

METEOROLOGY QUESTIONS FOR CPL/ ATPL

21 Precipitation in the form of showers occurs from
A convective clouds
B stratified clouds
C cirro-type clouds
D clouds containing only ice crystals

22 In which air mass are extremely low temperatures encountered?
A Arctic maritime air.
B Tropical continental air.
C Polar maritime air.
D Polar continental air.

23 Which of the following conditions are you most likely to encounter when approaching an
active warm front at medium to low level ?
A Low cloud base and poor visibility.
B Severe thunderstorms at low altitude.
C Extreme turbulence and severe lightning striking the ground.
D High cloud base, good surface visibility, and isolated thunderstorms.

24 (For this question use annex A)
The cloud type most applicable to most of square 3B is
A NS
B AS
C CS
D SC

25 Which of the following describes a warm occlusion?
A The air mass behind the front is more unstable than the air mass ahead of the front
B The coldest air mass is ahead of the original warm front
C The warmer air mass is ahead of the original warm front
D The air mass ahead of the front is drier than the air mass behind the front

26 In which approximate direction does the centre of a non-occluded frontal depression move?
A In the direction of the sharpest pressure increase.
B In the direction of the isobars behind the cold front.
C In the direction of the warm sector isobars.
D In the direction of the isobars ahead of the warm front.

27 What surface weather is associated with a stationary high pressure region over land in the winter?
A The possibility of snow showers.
B NS with continuous rain.
C Thunderstorms.
D A tendency for fog and low ST.

28 The Hurricane season is mainly from
A April until July.
B January until April.
C October until January.
D July until November.

29 Which one of the following statements is correct concerning the movement of the ITCZ in the region of West Africa?
A It oscillates during the year between the Equator and 10 degrees North.
B It oscillates during the year between 10 degrees North and 10 degrees South.
C It reaches its maximum southerly position of 5° S in January
D It reaches its maximum northerly position of 15° – 20° N in July

30 What name is given to the low level wind system between the subtropical high pressure belt and the equatorial trough of low pressure (ITCZ) ?
A Trade winds.
B Doldrums.
C Westerly winds.
D Monsoon.

 

METEOROLOGY QUESTIONS FOR CPL/ ATPL

31 The transition from SW to NE monsoon in India occurs in
A December, January, February
B February, March, April
C September, October, November
D July, August, September

32 What weather is prevalent in easterly waves?
A Frontal weather.
B Clear skies.
C Continuous rain.
D Thunderstorms and rain.

33 A strong, dry and warm downslope wind, produced by prior enforced ascent of air over hills or mountains is known as a
A Mistral
B Bora
C Fohn
D Scirocco

34 The most dangerous icing conditions are encountered in
A icy clouds at high levels.
B supercooled precipitation.
C zones where the air temperature is below -15°C.
D unstable clouds at medium levels.

35 What is the effect of a strong low level inversion ?
A It promotes vertical wind shear.
B It promotes extensive vertical movement of air.
C It prevents vertical wind shear.
D It results in good visual conditions near the surface.

36 In which stage of the life cycle of a single thunderstorm cell occur both up- and downdrafts
simultaneously?
A Mature stage
B Cumulus stage
C Dissipating stage
D In all stages

38 A microburst phenomenon can arise in the
A downdraught of a cumulonimbus at the formation stage.
B updraught of a cumulonimbus at the growth stage.
C downdraught of a cumulonimbus at the mature stage.
D updraught of a cumulonimbus at the mature stage.

39 You intend to carry out a VFR flight over the Alps, on a fine and hot summer day. What is the
best time of day to conduct this flight?
A Early evening.
B Afternoon.
C Mid-day.
D Morning.

40 The cloud base, reported in the METAR, is the height above
A mean sea level
B airfield level
C the highest terrain within a radius of 8 km from the observation station
D the pressure altitude of the observation station at the time of observation

41The height of the tropopause at 38°N 19°W is
A FL 420
B FL 360
C FL 400
D FL 320

42 Which constant pressure altitude chart is standard for FL 390?
A 500 hPa
B 700 hPa
C 200 hPa
D 300 hPa

43 How are well separated CB clouds described on the Significant Weather Chart?
A OCNL CB.
B EMBD CB.
C FRQ CB.
D ISOL CB.

44 Which of the following weather reports is a warning of conditions that could be potentially
hazardous to aircraft in flight ?
A TAF.
B SPECI.
C ATIS.
D SIGMET.

45 Which of the following weather reports could be, in accordance with the regulations,
abbreviated to “CAVOK”?
A 24009KT 6000 RA SCT010 OVC030 12/11 Q1007 TEMPO 4000 =
B 15003KT 9999 BKN100 17/11 Q1024 NOSIG =
C 04012G26KT 9999 BKN030 11/07 Q1024 NOSIG =
D 29010KT 9999 SCT045TCU 16/12 Q1015 RESHRA NOSIG =

METEOROLOGY
ANSWERS
1 C        11 B           21 A        31 C         41 B
2 A       12 A          22 D        32 D        42 C
3 C       13 B          23 A         33 C        43 A
4 D      14 C          24 D         34 B        44 D
5 C       15 A         25 B          35 A        45 B
6 B       16 D         26 C         36 A
7 B       17 D          27 D        37 A
8 A       18 D         28 D        38 C
9 A       19 D         29 D        39 D
10 B     20 D        30 A        40 B

METEOROLOGY QUESTIONS FOR CPL/ ATPL

Arunaksha Nandy

 

 

 

 

 

 

 

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