1/30
Question ID: 113172

A stable humid warm air mass slowly overrides a cold one. Which one of the following weather types may originate from this condition?

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A

The forming of a warm front.

B

Warm front dissipation.

C

The forming of a cold front.

D

The formation of thunder storms.
2/30
Question ID: 113586

Between the external appearance of a severe thunderstorm and the turbulence and hail that are contained within it, there is both a moderate?

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A

Correlation AND a strong correlation.

B

A moderate correlation.

C

A strong correlation.

D

Apparently no correlation.
3/30
Question ID: 113023

Select the true statement concerning isobars and wind flow patterns around high- and low-pressure systems that are shown on a surface weather chart?

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A

Isobars connect contour lines of equal temperature.

B

When the isobars are close together, the pressure gradient force is greater and wind velocities are stronger.

C

Surface winds flow perpendicular to the isobars.

D

When the isobars are far apart, crest of standing waves may be marked by stationary lenticular clouds.
4/30
Question ID: 112687

Where is the Ferrell cell located within the global pressure system?

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A

Between the Polar & Northern Cell

B

Below the Hadley cell

C

Above the Polar cell

D

Between the Polar and Hadley cell
5/30
Question ID: 121410

During a low-level flight at 2 000 ft over the sea, an aircraft approaches an intense area of high pressure.

What is correct regarding the aircraft's altitude with a QNH of 1014 hPa set on the subscale?

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A

The pressure altitude will be increasing

B

The indicated altitude from the aneroid altimeter will be decreasing

C

The aircraft true altitude will be increasing

D

The radio altimeter will show a decrease in altitude
6/30
Question ID: 120993

A cold air drop is formed when?

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A

Warm air overtakes cold air at height

B

Cold air collects above warm air, especially over mountains

C

Cold air breaks away from a cold front

D

Stable cold air meets warm, unstable air
7/30
Question ID: 113107

The rate at which descending unsaturated air is heated is about?

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A

3°C per 1 000 ft.

B

3°C per 100 m.

C

1.5 °C per 1 000 ft.

D

1.5 °C per 100 m.
8/30
Question ID: 121271

What is the approximate true altitude of the aircraft? It is flying at 3000 ft indicated altitude with an outside air temperature of ISA +20°C and with the QNH of 998 hPa set on the altimeter subscale, measured by a nearby airport at sea level?

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A

2760 ft

B

3240 ft

C

3480 ft

D

2800 ft
9/30
Question ID: 113056

Which phenomenon is often associated with a jet stream?

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A

Icing

B

Both icing and windshear.

C

Clear air turbulence (CAT).

D

Windshear.
10/30
Question ID: 112401

In METAR messages, the pressure group represents the?

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A

QNH rounded down to the nearest hPa.

B

QFE rounded down to the nearest hPa.QNH is rounded down to the next whole hectopascal and reported as a four digit group preceded by the letter indicator Q. If the value of QNH is less than 1000 hPa the first digit will be 0.

C

QFE rounded to the nearest hPa.

D

QNH rounded up to the nearest hPa
11/30
Question ID: 112795

In which of the following areas is the frequency of tropical revolving storms the highest?

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A

Arabian Sea (Sea area west of India)

B

South China Sea and the Philippines area

C

South Atlantic Ocean

D

Indonesia
12/30
Question ID: 113805

TAF LSZH 250600Z 2507/2516 00000KT 0100 FG VV001 BECMG 2508/2510 0800 VV002 BECMG 2510/2512 23005KT 2500 BR BKN005 TEMPO 2513/2516 6000 SCT007 = 

Which of these statements best describes the weather that can be expected at 1200 UTC?

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A

Visibility 800 meters, fog, wind from 230°, cloud base 500 feet.

B

Visibility 800 meters, fog, vertical visibility 200 feet, calm

C

Visibility 2,5 kilometers, mist, cloud base 500 feet, wind speed 5 knots

D

Visibility 6 kilometers, cloud base 500 feet, wind speed 5 knots
13/30
Question ID: 113568

Refer to the following TAF extract

BECMG 1118/1121 2000 BKN004 PROB30 BECMG 1121/1124 0500 FG VV001 What does the abbreviation PROB30 mean?

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A

The cloud ceiling should lift to 3 000 ft.

B

Conditions will last for at least 30 minutes.

C

Change expected in less than 30 minutes.

D

Probability of 30%.
14/30
Question ID: 113323

What is the average height of the jet core within a polar front jet stream?

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A

30000 ft

B

20000 ft

C

40000 ft

D

50000 ft
15/30
Question ID: 121210

Which of the following statements is true concerning orographic fog?

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A

It forms suddenly by day but not by night

B

It may be formed by day as well as by night

C

It is formed when the air is unstable

D

It develops slowly and dissipates rapidly
16/30
Question ID: 108592

Define the tropopause?

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A

That area where the temperature change does not exceed two-thirds of one degree Celsius per thousand foot increase in altitude independent of latitude.

B

That area where the temperature change does not exceed two-thirds of one degree Celsius per thousand foot increase in altitude over a range of 6000 feet.

C

A relatively thick layer, or boundary zone, below the troposphere.

D

A relatively thin layer, or boundary zone, which separates the lower atmosphere from the troposphere.
17/30
Question ID: 121140

Sea smoke can occasionally drift onto land and affect coastal aerodromes. 

It forms when?

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A

Sea spray from breaking waves in strong surface winds forms a mist that drifts across the surface

B

Saturated air from the surface of the sea is forced to rise as it meets coastal cliffs, forming fog that drifts inland

C

Relatively warm, moist air moves over water with a surface temperature that is below the dew point of the moving air

D

Evaporated vapour from a warm water surface condenses on contact with much colder air, and is unable to rise because of a surface inversion
18/30
Question ID: 108412

Which statement concerning the cold front and warm front of a frontal depression in the northern hemisphere is correct?

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A

The risk of fog is greater ahead of and behind the warm front than ahead of and behind the cold front.

B

The precipitation zone of the cold front is in general wider than the precipitation zone of the warm front.

C

While occluding the warm front always becomes a front aloft.

D

The wind backs more at the warm front than at the cold front.
19/30
Question ID: 112627

What is the most likely cause of a lack of clouds at upper levels in a stationary high?

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A

Divergence at higher levels.

B

Instability.

C

Rising air.

D

Sinking air.
20/30
Question ID: 113178

Judging by the chart, what wind speeds can you expect at FL310 above London?

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A

90 KTS

B

300 kts

C

140 KTS

D

110 km/h
21/30
Question ID: 113343

Which term applies when the temperature of the air changes by compression or expansion with no heat added or removed?

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A

Katabatic

B

Advection

C

Atmospheric

D

Adiabatic
22/30
Question ID: 112652

The crew of an aircraft flying from London Heathrow (EGLL) to Palma de Mallorca (LEPA), when passing to the west of Paris, wish to check the latest weather at aerodromes in the vicinity, in case of the need for an in-flight diversion.

To obtain this information what single source of meteorological information, available through VHF, could the crew consult?

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A

AIREP

B

VOLMET

C

ATIS

D

VORTAC
23/30
Question ID: 112432

In a warm occlusion?

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A

The warm air is lifted.

B

The cold air is lifted.

C

The warm front overtakes the cold front.

D

The warm front becomes a front aloft.
24/30
Question ID: 120771

What type of front / occlusion usually moves the fastest?

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A

Warm occlusion

B

Cold occlusion

C

Warm front

D

Cold front
25/30
Question ID: 112732

What does the abbreviation 'BKN' mean?

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A

Nil significant cloud cover

B

3-5 Eights of the sky is cloud covered

C

3-4 Eights of the sky is cloud covered

D

5-7 Eights of the sky is cloud covered
26/30
Question ID: 113330

In relation to the polar front jet stream, the greatest rate of wind shear is most likely to occur?

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A

On the polar side of the core.

B

Below 15000 ft/AMSL.

C

On the tropical side of the core.

D

8000 ft or more above the core.
27/30
Question ID: 113396

When the barometric subscale of the altimeter is adjusted to 1013,2 hPa, what type of altitude is being measured?

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A

Pressure altitude.

B

Indicated altitude.

C

Relative height.

D

True altitude.
28/30
Question ID: 113257

Which of the following situations will most likely lead to a stable air mass?

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A

Cold air at higher levels and advection of warm air at lower levels.

B

Widespread convection.

C

Decreasing wind and developing showers.

D

Subsidence and/or cooling from below.
29/30
Question ID: 113164

The diameter of a typical tornado is?

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A

Only a few meters.

B

About 2 to 6 km.

C

In the order of 10 km.

D

100 to 150 meters.
30/30
Question ID: 108361

What is the 'easterly wave'?

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A

A wave travelling East => West.

B

A wave travelling South => North.

C

A wave travelling North => South.

D

A wave travelling West => East.
Finish Test
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