Exam quiz Meteorology - SPL - Sailplane Pilot Licence

Question 1

The gliding weather report states environmental instability. In the morning, dew covers grass and no thermals are presently active. What development can be expected for thermal activity?

Accepted Answer

With ongoing insolation and ground warming, thermal lifting is likely to begin

Answer

Formation of dew prevents all thermal activity during the following day

Answer

Environmental instability prevents air from being lifted and no thermals will be generated

Answer

After sunset and formation of a ground-level inversion thermal activity is likely to begin

Question 2

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

Accepted Answer

0,6° C / 100 m.

Answer

1,0° C / 100 m.

Answer

2° C / 1000 ft.

Answer

0° C / 100 m.

Question 3

What type of cloud indicates thermal updrafts?

Accepted Answer

Cumulus

Answer

Stratus

Answer

Cirrus

Answer

Lenticularis

Question 4

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

Accepted Answer

Ground cooling during the night.

Answer

Thickening of clouds in medium layers.

Answer

Large-scale lifting of air

Answer

Intensifying and gusting winds.

Question 5

What clouds and weather can typically be observed during the passage of a cold front?

Accepted Answer

Strongly developed cumulus clouds (Cb) with showers of rain and thunderstorms, 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

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

Answer

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

Question 6

The "spread" is defined as...

Accepted Answer

Difference between actual temperature and dew point.

Answer

Difference between dew point and condensation point.

Answer

Relation of actual to maximum possible humidity of air

Answer

Maximum amount of water vapour that can be contained in air.

Question 7

What cloud type does the picture show? See figure (MET-004).

Accepted Answer

Cirrus

Answer

Altocumulus

Answer

Cumulus

Answer

Stratus

Question 8

What process causes latent heat being released into the upper troposphere?

Accepted Answer

Cloud forming due to condensation

Answer

Descending air across widespread areas

Answer

Evaporation over widespread water areas

Answer

Stabilisation of inflowing air masses

Question 9

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

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

Answer

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

Answer

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

Question 10

What clouds and weather may result from a humid and unstable air mass, that is pushed against a chain of mountains by the predominant wind and forced to rise?

Accepted Answer

Embedded CB with thunderstorms and showers of hail and/or rain.

Answer

Smooth, unstructured NS cloud with light drizzle or snow (during winter).

Answer

Thin Altostratus and Cirrostratus clouds with light and steady precipitation.

Answer

Overcast low stratus (high fog) with no precipitation.

Question 11

What phenomenon is referred to as "blue thermals"?

Accepted Answer

Thermals without formation of Cu clouds

Answer

Thermals with less than 4/8 Cu coverage

Answer

Descending air between Cumulus clouds

Answer

Turbulence in the vicinity of Cumulonimbus clouds

Question 12

How do dew point and relative humidity change with decreasing temperature?

Accepted Answer

Dew point remains constant, relative humidity increases

Answer

Dew point decreases, relative humidity increases

Answer

Dew point increases, relative humidity decreases

Answer

Dew point remains constant, relative humidity decreases

Question 13

Which of the following conditions are most favourable for ice accretion?

Accepted Answer

Temperatures between 0° C and -12° C, presence of supercooled water droplets (clouds)

Answer

Temperatures below 0° C, strong wind, sky clear of clouds

Answer

Temperatures between -20° C and -40° C, presence of ice crystals (Ci clouds)

Answer

Temperatures between +10° C and -30° C, presence of hail (clouds)

Question 14

What danger is most imminent when an aircraft is hit by lightning?

Accepted Answer

Surface overheat and damage to exposed aircraft parts

Answer

Explosion of electrical equipment in the cockpit

Answer

Rapid cabin depressurization and smoke in the cabin

Answer

Disturbed radio communication, static noise signals

Question 15

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

Accepted Answer

Formation of a low in the upper troposphere

Answer

Alternating pressure

Answer

Formation of a large ground low

Answer

Formation of a high in the upper troposphere

Question 16

How does inflowing cold air affect the shape and vertical distance between pressure layers?

Accepted Answer

Decrease in vertical distance, lowering in height (low pressure)

Answer

Increasing vertical distance, raise in height (high pressure)

Answer

Decreasing vertical distance, raise in height (high pressure)

Answer

Increase in vertical distance, lowering in height (low pressure)

Question 17

Which stage of a thunderstorm is dominated by updrafts?

Accepted Answer

Cumulus stage

Answer

Dissipating stage

Answer

Mature stage

Answer

Upwind stage

Question 18

The symbol labeled (3) as shown in the picture is a / an... See figure (MET-005)

Accepted Answer

Occlusion

Answer

Cold front

Answer

Warm front

Answer

Front aloft

Question 19

Weather and operational information about the destination aerodrome can be obtained during the flight by...

Accepted Answer

ATIS

Answer

PIREP

Answer

SIGMET

Answer

VOLMET

Question 20

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

Accepted Answer

SHRA

Answer

+TSRA

Answer

TS

Answer

+RA

Question 21

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

Cold, moist air mixes with warm, moist air

Answer

Prolonged radiation during nights clear of clouds

Question 22

What situation is called "over-development" in a weather report?

Accepted Answer

Vertical development of Cumulus clouds to rain showers

Answer

Change from blue thermals to cloudy thermals during the afternoon

Answer

Development of a thermal low to a storm depression

Answer

Widespread spreading of Cumulus clouds below an inversion layer

Question 23

The height of the tropopause of the International Standard Atmosphere (ISA) is at...

Accepted Answer

36000 ft.

Answer

5500 ft

Answer

48000 ft.

Answer

11000 ft.

Question 24

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

Accepted Answer

11000 m

Answer

11000 ft

Answer

18000 ft

Answer

36000 m

Question 25

The barometric altimeter indicates height above...

Accepted Answer

A selected reference pressure level.

Answer

Mean sea level.

Answer

Ground.

Answer

Standard pressure 1013.25 hPa.

Question 26

What information can be obtained from satellite images?

Accepted Answer

Overview of cloud covers and front lines

Answer

Turbulence and icing

Answer

Temperature and dew point of environmental air

Answer

Flight visibility, ground visibility, and ground contact

Question 27

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 28

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 and distance of hypsometric lines

Answer

By alignment of lines of warm- and cold fronts.

Question 29

How does air temperature change in ISA from MSL to approx. 10.000 m height?

Accepted Answer

From +15° to -50°C

Answer

From +30° to -40°C

Answer

From +20° to -40°C

Answer

From -15° to 50°C

Question 30

Which force causes "wind"?

Accepted Answer

Pressure gradient force

Answer

Centrifugal force

Answer

Coriolis force

Answer

Thermal force

Question 31

The barometric altimeter with QNH setting indicates...

Accepted Answer

Height above MSL

Answer

True altitude above MSL.

Answer

Height above the pressure level at airfield elevation.

Answer

Height above standard pressure 1013.25 hPa.

Question 32

Under which conditions "back side weather" ("Rückseitenwetter") can be expected?

Accepted Answer

After passing of a cold front

Answer

Before passing of an occlusion

Answer

During Foehn at the lee side

Answer

After passing of a warm front

Question 33

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

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

Answer

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

Answer

Scattered cumulus clouds with showers and thunderstorms

Question 34

What factors may indicate a tendency to fog formation?

Accepted Answer

Low spread, decreasing temperature

Answer

Strong winds, decreasing temperature

Answer

Low pressure, increasing temperature

Answer

Low spread, increasing temperature

Question 35

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

Accepted Answer

Shortly decreasing, thereafter increasing pressure

Answer

Continually increasing pressure

Answer

Continually decreasing pressure

Answer

Constant pressure pattern

Question 36

Moderate to severe turbulence has to be expected...

Accepted Answer

On the lee side of a mountain range when rotor clouds are present.

Answer

Below thick cloud layers on the windward side of a mountain range.

Answer

Overhead unbroken cloud layers.

Answer

With the appearance of extended low stratus clouds (high fog).

Question 37

What information is NOT found on Low-Level Significant Weather Charts (LLSWC)?

Accepted Answer

Radar echos of precipitation

Answer

Information about icing conditions

Answer

Front lines and frontal displacements

Answer

Information about turbulence areas

Question 38

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

Accepted Answer

Polar cold air and tropical warm air

Answer

Arctic and polar cold air

Answer

Tropical and arctic cold air

Answer

Equatorial and tropical warm air

Question 39

Which answer contains every state of water found in the atmosphere?

Accepted Answer

Liquid, solid, and gaseous

Answer

Liquid

Answer

Gaseous and liquid

Answer

Liquid and solid

Question 40

The temperature lapse rate with increasing height within the troposphere according to ISA is...

Accepted Answer

0,65° C / 100 m.

Answer

1° C / 100 m.

Answer

0,6° C / 100 m.

Answer

3° C / 100 m.

Question 41

Light turbulence always has to be expected...

Accepted Answer

Below cumulus clouds due to thermal convection.

Answer

Above cumulus clouds due to thermal convection.

Answer

Below stratiform clouds in medium layers.

Answer

When entering inversions.

Question 42

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

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

Answer

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

Question 43

Mountain side updrafts can be intensified by ...

Accepted Answer

Solar irradiation on the windward side

Answer

Solar irradiation on the lee side

Answer

Thermal radiation of the windward side during the night

Answer

Warming of upper atmospheric layers

Question 44

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 45

What process results in the formation of "orographic fog" ("hill fog")?

Accepted Answer

Warm, moist air is moved across a hill or a mountain range

Answer

Prolonged radiation during nights clear of clouds

Answer

Evaporation from warm, moist ground area into very cold air

Answer

Cold, moist air mixes with warm, moist air

Question 46

What temperatures are most dangerous with respect to airframe icing?

Accepted Answer

0° to -12° C

Answer

+20° to -5° C

Answer

-20° to -40° C

Answer

.+5° to -10° C

Question 47

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 48

Which type of ice forms by large, supercooled droplets hitting the front surfaces of an aircraft?

Accepted Answer

Clear ice

Answer

Hoar frost

Answer

Rime ice

Answer

Mixed ice

Question 49

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

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

Answer

Medium visibility with lowering cloud bases, onset of prolonged precipitation

Question 50

Cold air inflow in high tropospheric layers may result in...

Accepted Answer

Showers and thunderstorms

Answer

Frontal weather

Answer

Calm weather and cloud dissipation

Answer

Stabilisation and calm weather

Question 51

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, flatted Cu clouds

Question 52

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

Accepted Answer

Scattered Cu clouds

Answer

Overcast low stratus

Answer

Overcast Ns clouds

Answer

Squall lines and thunderstorms

Question 53

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 calm winds, formation of local wind systems

Answer

Large isobar spacing with strong prevailing westerly winds

Answer

Small isobar spacing with strong prevailing northerly winds

Question 54

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

Accepted Answer

Calm winds and widespread areas with high fog

Answer

Changing weather with passing of frontal lines

Answer

Squall lines and thunderstorms

Answer

Calm weather and cloud dissipation, few high Cu

Question 55

An inversion is a layer ...

Accepted Answer

With increasing temperature with increasing height

Answer

With constant temperature with increasing height

Answer

With increasing pressure with increasing height

Answer

With decreasing temperature with increasing height

Question 56

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 57

"Foehn" conditions usually develop with...

Accepted Answer

Stability, widespread air blown against a mountain ridge.

Answer

Instability, high pressure area with calm wind.

Answer

Stability, high pressure area with calm wind.

Answer

Instability, widespread air blown against a mountain ridge.

Question 58

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 59

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

Accepted Answer

Rain and showers of rain

Answer

Showers of snow and rain

Answer

Prolonged rain and continuous rain

Answer

Light and heavy precipitation

Question 60

Which type of cloud is associated with prolonged rain?

Accepted Answer

Nimbostratus

Answer

Altocumulus

Answer

Cumulonimbus

Answer

Cirrostratus

Question 61

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

Parallel to the warm front line to the south

Answer

To the northwest during winter, to the southwest during summer

Question 62

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

Accepted Answer

Variable winds, formation of local wind systems

Answer

Strong prevailing westerly winds with rapid veering

Answer

Strong prevailing easterly winds with rapid backing

Answer

Formation of local wind systems with strong prevailing westerly winds

Question 63

The term "beginning of thermals" refers to the moment when thermal intensity...

Accepted Answer

Becomes usable for gliding and reaches up to 600 m AGL.

Answer

Becomes usable for cross-country gliding by formation of Cu clouds.

Answer

Becomes usable for gliding and reaches up to 1200 m MSL.

Answer

Reaches up to 600 m AGL and forms Cumulus clouds.

Question 64

The term "trigger temperature" is defined as the temperature which...

Accepted Answer

Must be obtained at ground level so Cumulus clouds can be formed by thermal lifts.

Answer

Is reached by a thermal lift during ascend when formation of Cumulus clouds begins.

Answer

Is the maximum temperature at ground level that can be reached without formation of a thunderstorm from a Cumulus cloud.

Answer

Is the minimum temperature at ground level that has to be reached so formation of a thunderstorm from a Cumulus cloud can occur.

Exam simulation Meteorology - SPL - Sailplane Pilot Licence

Exam simulation SPL Sailplane Theory Exam Questions in English Meteorology 120 questions on 120 minutes

Exam simulation Meteorology - SPL - Sailplane Pilot Licence

Exam simulation SPL Sailplane Theory Exam Questions in English Meteorology 120 questions on 120 minutes

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