Exam quiz Meteorology - Exam BPL Gas - Balloon Pilot License

Question 1

The term "tropopause" is defined as...

Accepted Answer

The boundary area between the troposphere and the stratosphere

Answer

The layer above the troposphere showing an increasing temperature

Answer

The height above which the temperature starts to decrease

Answer

The boundary area between the mesosphere and the stratosphere

Question 2

What weather phenomenon designated by "2" has to be expected on the lee side during "Foehn" conditions? See figure (MET-001).

Accepted Answer

Altocumulus lenticularis

Answer

Cumulonimbus

Answer

Altocumulus Castellanus

Answer

Nimbostratus

Question 3

What pressure pattern can be observed when a cold front is passing?

Accepted Answer

Shortly decreasing, thereafter increasing pressure

Answer

Continually decreasing pressure

Answer

Constant pressure pattern

Answer

Continually increasing pressure

Question 4

The symbol labeled (1) as shown in the picture is a / an... See figure (MET-005)

Accepted Answer

Cold front

Answer

Front aloft

Answer

Occlusion

Answer

Warm front

Question 5

What is meant by "inversion layer"?

Accepted Answer

An atmospheric layer where temperature increases with increasing height

Answer

A boundary area between two other layers within the atmosphere

Answer

An atmospheric layer with constant temperature with increasing height

Answer

An atmospheric layer where temperature decreases with increasing height

Question 6

What weather conditions in Central Europe are typically found in high pressure areas during summer?

Accepted Answer

Large isobar spacing with calm winds, formation of local wind systems

Answer

Small isobar spacing with strong prevailing northerly winds

Answer

Large isobar spacing with strong prevailing westerly winds

Answer

Small isobar spacing with calm winds, formation of local wind systems

Question 7

The dry adiabatic lapse rate has a value of...

Accepted Answer

1.0° C / 100 m

Answer

0.6° C / 100 m

Answer

0.65° C / 100 m

Answer

2° C / 1000 ft

Question 8

Which conditions are likely for the formation of advection fog?

Accepted Answer

Warm, humid air moves over a cold surface

Answer

Cold, humid air moves over a warm ocean

Answer

Humidity evaporates from warm, humid ground into cold air

Answer

Warm, humid air cools during a cloudy night

Question 9

What is the mass of a "cube of air" with the edges 1 m long, at MSL according ISA?

Accepted Answer

1.225 kg

Answer

0.1225 kg

Answer

12.25 kg

Answer

0.01225 kg

Question 10

At what rate does the temperature change with increasing height according to ISA (ICAO Standard Atmosphere) within the troposphere?

Accepted Answer

Decreases by 2° C / 1000 ft

Answer

Increases by 2° C / 1000 ft

Answer

Decreases by 2° C / 100 m

Answer

Increases by 2° C / 100 m

Question 11

What factor may affect the top of cumulus clouds?

Accepted Answer

The presence of an inversion layer

Answer

The spread

Answer

Relative humidity

Answer

The absolute humidity

Question 12

What visual flight conditions can be expected within the warm sector of a polar front low during summer time?

Accepted Answer

Moderate to good visibility, scattered clouds

Answer

Visibility less than 1000 m, cloud-covered ground

Answer

Moderate visibility, heavy showers and thunderstorms

Answer

Good visibility, some isolated high clouds

Question 13

What visual flight conditions can be expected after the passage of a cold front?

Accepted Answer

Good visibility, formation of cumulus clouds with showers of rain or snow

Answer

Poor visibility, formation of overcast or ground-covering stratus clouds, snow

Answer

Medium visibility with lowering cloud bases, onset of prolonged precipitation

Answer

Scattered cloud layers, visibility more than 5 km, formation of shallow cumulus clouds

Question 14

What weather conditions can be expected in high pressure areas during winter?

Accepted Answer

Calm winds and widespread areas with high fog

Answer

Squall lines and thunderstorms

Answer

Changing weather with passing of frontal lines

Answer

Calm weather and cloud dissipation, few high Cu

Question 15

The saturated adiabatic lapse rate is...

Accepted Answer

Lower than the dry adiabatic lapse rate

Answer

Proportional to the dry adiabatic lapse rate

Answer

Higher than the dry adiabatic lapse rate

Answer

Equal to the dry adiabatic lapse rate

Question 16

How do spread and relative humidity change with increasing temperature?

Accepted Answer

Spread increases, relative humidity decreases

Answer

Spread increases, relative humidity increases

Answer

Spread remains constant, relative humidity increases

Answer

Spread remains constant, relative humidity decreases

Question 17

How can wind speed and wind direction be derived from surface weather charts?

Accepted Answer

By alignment and distance of isobaric lines

Answer

By annotations from the text part of the chart

Answer

By alignment of lines of warm- and cold fronts

Answer

By alignment and distance of hypsometric lines

Question 18

What can be expected for the prevailing wind with isobars on a surface weather chart showing large distances?

Accepted Answer

Low pressure gradients resulting in low prevailing wind

Answer

Strong pressure gradients resulting in strong prevailing wind

Answer

Strong pressure gradients resulting in low prevailing wind

Answer

Low pressure gradients resulting in strong prevailing wind

Question 19

What cloud type can typically be observed across widespread high pressure areas during summer?

Accepted Answer

Scattered Cu clouds

Answer

Squall lines and thunderstorms

Answer

Overcast low stratus

Answer

Overcast Ns clouds

Question 20

What weather phenomena have to be expected around an upper-level trough?

Accepted Answer

Development of showers and thunderstorms (Cb)

Answer

Formation of high stratus clouds, ground-covering cloud bases

Answer

Calm weather, formation of lifted fog layers

Answer

Calm wind, forming of shallow cumulus clouds

Question 21

What pressure pattern can be observed during the passage of a polar front low?

Accepted Answer

Falling pressure in front of the warm front, constant pressure within the warm sector, rising pressure behind the cold front

Answer

Falling pressure in front of the warm front, constant pressure within the warm sector, falling pressure behind the cold front

Answer

Rising pressure in front of the warm front, constant pressure within the warm sector, rising pressure behind the cold front

Answer

Rising pressure in front of the warm front, rising pressure within the warm sector, falling pressure behind the cold front

Question 22

What wind is reported as 225/15 ?

Accepted Answer

South-west wind with 15 kt

Answer

North-east wind with 15 km/h

Answer

South-west wind with 15 km/h

Answer

North-east wind with 15 kt

Question 23

Which process may result in an inversion layer at about 5000 ft (1500 m) height?

Accepted Answer

Widespread descending air within a high pressure area

Answer

Intensive sunlight insolation during a warm summer day

Answer

Ground cooling by radiation during the night

Answer

Advection of cool air in the upper troposphere

Question 24

What type of fog emerges if humid and almost saturated air, is forced to rise upslope of hills or shallow mountains by the prevailing wind?

Accepted Answer

Orographic fog

Answer

Radiation fog

Answer

Steaming fog

Answer

Advection fog

Question 25

Temperatures will be given by meteorological aviation services in Europe in which unit?

Accepted Answer

Degrees Centigrade (° C)

Answer

Degrees Fahrenheit

Answer

Gpdam

Answer

Kelvin

Question 26

What phenomenon is caused by cold air downdrafts with precipitation from a fully developed thunderstorm cloud?

Accepted Answer

Gust front

Answer

Freezing rain

Answer

Electrical discharge

Answer

Anvil-head top of Cb cloud

Question 27

The saturated adiabatic lapse rate should be assumed with a mean value of:

Accepted Answer

0.6° C / 100 m

Answer

2° C / 1000 ft

Answer

1.0° C / 100 m

Answer

0° C / 100 m

Question 28

What factors are required for the formation of precipitation in clouds?

Accepted Answer

Moderate to strong updrafts

Answer

High humidity and high temperatures

Answer

The presence of an inversion layer

Answer

Calm winds and intensive sunlight insolation

Question 29

Weather phenomena are most common to be found in which atmospheric layer?

Accepted Answer

Troposphere

Answer

Thermosphere

Answer

Tropopause

Answer

Stratosphere

Question 30

Which processes result in decreasing air density?

Accepted Answer

Increasing temperature, decreasing pressure

Answer

Increasing temperature, increasing pressure

Answer

Decreasing temperature, decreasing pressure

Answer

Decreasing temperature, increasing pressure

Question 31

Which force causes "wind"?

Accepted Answer

Pressure gradient force

Answer

Thermal force

Answer

Coriolis force

Answer

Centrifugal force

Question 32

Which stage of a thunderstorm is dominated by updrafts?

Accepted Answer

Cumulus stage

Answer

Upwind stage

Answer

Mature stage

Answer

Dissipating stage

Question 33

What frontal line divides subtropical air from polar cold air, in particular across Central Europe?

Accepted Answer

Polar front

Answer

Warm front

Answer

Cold front

Answer

Occlusion

Question 34

"Foehn" conditions usually develop with...

Accepted Answer

Stability, widespread air blown against a mountain ridge

Answer

Instability, widespread air blown against a mountain ridge

Answer

Stability, high pressure area with calm wind

Answer

Instability, high pressure area with calm wind

Question 35

Which type of cloud is associated with prolonged rain?

Accepted Answer

Nimbostratus

Answer

Cirrostratus

Answer

Altocumulus

Answer

Cumulonimbus

Question 36

Above the friction layer, with a prevailing pressure gradient, the wind direction is...

Accepted Answer

Parallel to the isobars

Answer

At an angle of 30° to the isobars towards low pressure

Answer

Perpendicular to the isobars

Answer

Perpendicular to the isohypses

Question 37

What wind conditions can be expected in areas showing large distances between isobars?

Accepted Answer

Variable winds, formation of local wind systems

Answer

Formation of local wind systems with strong prevailing westerly winds

Answer

Strong prevailing westerly winds with rapid veering

Answer

Strong prevailing easterly winds with rapid backing

Question 38

What process results in the formation of "advection fog"?

Accepted Answer

Warm, moist air is moved across cold ground areas

Answer

Cold, moist air is being moved across warm ground areas

Answer

Prolonged radiation during nights clear of clouds

Answer

Cold, moist air mixes with warm, moist air

Question 39

What weather conditions can be expected during "Foehn" on the windward side of a mountain range?

Accepted Answer

Layered clouds, mountains obscured, poor visibility, moderate or heavy rain

Answer

Scattered cumulus clouds with showers and thunderstorms

Answer

Calm wind and forming of high stratus clouds (high fog)

Answer

Dissipating clouds with unusual warming, accompanied by strong, gusty winds

Question 40

The altimeter can be checked on the ground by setting...

Accepted Answer

QNH and comparing the indication with the airfield elevation

Answer

QNE and checking that the indication shows zero on the ground

Answer

QFF and comparing the indication with the airfield elevation

Answer

QFE and comparing the indication with the airfield elevation

Question 41

What information can be obtained from satellite images?

Accepted Answer

Overview of cloud covers and front lines

Answer

Flight visibility, ground visibility, and ground contact

Answer

Turbulence and icing

Answer

Temperature and dew point of environmental air

Question 42

Clouds in high layers are referred to as...

Accepted Answer

Cirro-

Answer

Strato-

Answer

Alto-

Answer

Nimbo-

Question 43

What weather conditions can be expected in high pressure areas during summer?

Accepted Answer

Calm weather and cloud dissipation, few high Cu

Answer

Changing weather with passing of frontal lines

Answer

Squall lines and thunderstorms

Answer

Calm winds and widespread areas with high fog

Question 44

When air masses meet each other head on, how is this referred to and what air movements will follow?

Accepted Answer

Convergence resulting in air being lifted

Answer

Divergence resulting in air being lifted

Answer

Convergence resulting in sinking air

Answer

Divergence resulting in sinking air

Question 45

An inversion layer close to the ground can be caused by...

Accepted Answer

Ground cooling during the night

Answer

Large-scale lifting of air

Answer

Thickening of clouds in medium layers

Answer

Intensifying and gusting winds

Question 46

The symbol labeled (2) as shown in the picture is a / an... See figure (MET-005)

Accepted Answer

Warm front

Answer

Front aloft

Answer

Cold front

Answer

Occlusion

Question 47

Light turbulence always has to be expected...

Accepted Answer

Below cumulus clouds due to thermal convection

Answer

When entering inversions

Answer

Above cumulus clouds due to thermal convection

Answer

Below stratiform clouds in medium layers

Question 48

What condition may prevent the formation of "radiation fog"?

Accepted Answer

Overcast cloud cover

Answer

Clear night, no clouds

Answer

Low spread

Answer

Calm wind

Question 49

What factors may indicate a tendency to fog formation?

Accepted Answer

Low spread, decreasing temperature

Answer

Low pressure, increasing temperature

Answer

Strong winds, decreasing temperature

Answer

Low spread, increasing temperature

Question 50

Measured pressure distribution in MSL and corresponding frontal systems are displayed by the...

Accepted Answer

Surface weather chart

Answer

Significant Weather Chart (SWC)

Answer

Prognostic chart

Answer

Hypsometric chart

Question 51

The movement of air flowing together is called...

Accepted Answer

Convergence

Answer

Subsidence

Answer

Divergence

Answer

Confluence

Question 52

In a METAR, "heavy rain" is designated by the identifier...

Accepted Answer

+RA

Answer

RA

Answer

+SHRA

Answer

SHRA

Question 53

The pressure at MSL in ISA conditions is...

Accepted Answer

1013.25 hPa

Answer

113.25 hPa

Answer

1123 hPa

Answer

15 hPa

Question 54

What change of wind direction can be expected during the passage of a polar front low in Central Europe?

Accepted Answer

Veering wind during passage of the warm front, veering wind during passage of the cold front

Answer

Backing wind during passage of the warm front, veering wind during passage of the cold front

Answer

Backing wind during passage of the warm front, backing wind during passage of the cold front

Answer

Veering wind during passage of the warm front, backing wind during passage of the cold front

Question 55

What cloud sequence can typically be observed during the passage of a warm front?

Accepted Answer

Cirrus, thickening altostratus and altocumulus clouds, lowering cloud base with rain, nimbostratus

Answer

Squall line with showers of rain and thunderstorms (Cb), gusting wind followed by cumulus clouds with isolated showers of rain

Answer

Wind becoming calm, dissipation of clouds and warming during summer; formation of extended high fog layers during winter

Answer

In coastal areas during daytime wind from the coast and forming of cumulus clouds, dissipation of clouds during evening and night

Question 56

Regarding the type of cloud, precipitation is classified as...

Accepted Answer

Rain and showers of rain

Answer

Light and heavy precipitation

Answer

Showers of snow and rain

Answer

Prolonged rain and continuous rain

Question 57

What is the usual direction of movement of a polar front low?

Accepted Answer

Parallel to the warm-sector isobars

Answer

To the northeast during winter, to the southeast during summer

Answer

To the northwest during winter, to the southwest during summer

Answer

Parallel to the warm front line to the south

Question 58

What is the mean height of the tropopause according to ISA (ICAO Standard Atmosphere)?

Accepted Answer

11000 m

Answer

36000 m

Answer

11000 ft

Answer

18000 ft

Question 59

What pressure pattern may result from cold-air inflow in high tropospheric layers?

Accepted Answer

Formation of a low in the upper troposphere

Answer

Formation of a large ground low

Answer

Alternating pressure

Answer

Formation of a high in the upper troposphere

Question 60

Heavy downdrafts and strong wind shear close to the ground can be expected...

Accepted Answer

Near the rainfall areas of heavy showers or thunderstorms

Answer

During approach to an airfield at the coast with a strong sea breeze

Answer

During cold, clear nights with the formation of radiation fog

Answer

During warm summer days with high, flattened Cu clouds

Question 61

What kind of reduction in visibility is not very sensitive to changes in temperature?

Accepted Answer

Haze (HZ)

Answer

Radiation fog (FG)

Answer

Mist (BR)

Answer

Patches of fog (BCFG)

Question 62

What are the air masses that Central Europe is mainly influenced by?

Accepted Answer

Polar cold air and tropical warm air

Answer

Equatorial and tropical warm air

Answer

Tropical and arctic cold air

Answer

Arctic and polar cold air

Question 63

In a METAR, "(moderate) showers of rain" are designated by the identifier...

Accepted Answer

SHRA

Answer

+TSRA

Answer

TS

Answer

+RA

Question 64

Information about pressure patterns and frontal situation can be found in which chart?

Accepted Answer

Surface weather chart

Answer

Hypsometric chart

Answer

Wind chart

Answer

Significant Weather Chart (SWC)

Exam simulation Meteorology - Exam BPL Gas - Balloon Pilot License

Exam simulation Gas Balloon Pilot Exam BPL Meteorology 120 questions on 120 minutes

Exam simulation Meteorology - Exam BPL Gas - Balloon Pilot License

Exam simulation Gas Balloon Pilot Exam BPL Meteorology 120 questions on 120 minutes

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