Exam quiz Meteorology - SPL - Sailplane Pilot License

Question 1

Which force causes "wind"?

Accepted Answer

Pressure gradient force

Answer

Centrifugal force

Answer

Coriolis force

Answer

Thermal force

Question 2

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

Accepted Answer

Moderate to strong updrafts

Answer

The presence of an inversion layer

Answer

Calm winds and intensive sunlight insolation

Answer

High humidity and high temperatures

Question 3

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 4

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 / 100 m

Answer

Decreases by 2° C / 100 m

Answer

Increases by 2° C / 1000 ft

Question 5

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

Accepted Answer

Overcast cloud cover

Answer

Calm wind

Answer

Clear night, no clouds

Answer

Low spread

Question 6

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

Ground cooling by radiation during the night

Answer

Intensive sunlight insolation during a warm summer day

Answer

Advection of cool air in the upper troposphere

Question 7

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 8

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 9

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

Accepted Answer

Cirrus

Answer

Altocumulus

Answer

Cumulus

Answer

Stratus

Question 10

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 11

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 12

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 13

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 14

Clouds are basically distinguished by what types?

Accepted Answer

Cumulus and stratiform clouds

Answer

Thunderstorm and shower clouds

Answer

Stratiform and ice clouds

Answer

Layered and lifted clouds

Question 15

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

Accepted Answer

1,225 kg

Answer

0,01225 kg

Answer

0,1225 kg

Answer

12,25 kg

Question 16

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 17

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 18

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 19

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 20

What is meant by "inversion layer"?

Accepted Answer

An atmospheric layer where temperature increases with increasing height

Answer

An atmospheric layer where temperature decreases with increasing height

Answer

An atmospheric layer with constant temperature with increasing height

Answer

A boundary area between two other layers within the atmosphere

Question 21

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 22

What conditions are favourable for the formation of thunderstorms?

Accepted Answer

Warm humid air, conditionally unstable environmental lapse rate

Answer

Calm winds and cold air, overcast cloud cover with St or As.

Answer

Warm and dry air, strong inversion layer

Answer

Clear night over land, cold air and patches of fog

Question 23

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 24

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

Accepted Answer

Development of showers and thunderstorms (Cb)

Answer

Calm weather, formation of lifted fog layers

Answer

Calm wind, forming of shallow cumulus clouds

Answer

Formation of high stratus clouds, ground-covering cloud bases

Question 25

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 26

The barometric altimeter with QFE setting indicates...

Accepted Answer

Height above the pressure level at airfield elevation.

Answer

True altitude above MSL.

Answer

Height above MSL.

Answer

Height above standard pressure 1013.25 hPa.

Question 27

What information can be found in the ATIS, but not in a METAR?

Accepted Answer

Operational information such as runway in use and transition level

Answer

Information about current weather, for example types of precipitation

Answer

Approach information, such as ground visibility and cloud base

Answer

Information about mean wind speeds, maximum speeds in gusts if applicable

Question 28

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 29

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 30

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 31

With regard to global circulation within the atmosphere, where does polar cold air meet subtropical warm air?

Accepted Answer

At the polar front

Answer

At the equator

Answer

At the subtropical high pressure belt

Answer

At the geographic poles

Question 32

What wind is reported as 225/15?

Accepted Answer

South-west wind with 15 kt

Answer

North-east wind with 15 kt

Answer

South-west wind with 15 km/h

Answer

North-east wind with 15 km/h

Question 33

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 34

While planning a 500 km triangle flight, there is a squall line 100 km west of the departure airfield, extending from north to south, moving east. Concerning the weather situation, what decision would be recommendable?

Accepted Answer

To postpone the flight to another day

Answer

To change plans and start the triangle heading east

Answer

To plan the flight below cloud base of the thunderstorms

Answer

During flight, to look for spacing between thunderstorms

Question 35

Extensive high pressure areas can be found throughout the year ...

Accepted Answer

Over oceanic areas at latitudes around 30°N/S

Answer

In tropical areas, close to the equator

Answer

In areas showing extensive lifting processes

Answer

In mid latitudes along the polar front

Question 36

How do spread and relative humidity change with increasing temperature?

Accepted Answer

Spread increases, relative humidity decreases

Answer

Spread remains constant, relative humidity increases

Answer

Spread remains constant, relative humidity decreases

Answer

Spread increases, relative humidity increases

Question 37

Which stage of a thunderstorm is dominated by updrafts?

Accepted Answer

Cumulus stage

Answer

Dissipating stage

Answer

Mature stage

Answer

Upwind stage

Question 38

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 39

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 low prevailing wind

Answer

Strong pressure gradients resulting in strong prevailing wind

Answer

Low pressure gradients resulting in strong prevailing wind

Question 40

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 41

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 42

What weather is likely to be experienced during "Foehn" in the Bavarian area close to the alps?

Accepted Answer

Nimbostratus cloud in the southern alps, rotor clouds at the lee side, warm and dry wind

Answer

Cold, humid downhill wind on the lee side of the alps, flat pressure pattern

Answer

High pressure area overhead Biscay and low pressure area in Eastern Europe

Answer

Nimbostratus cloud in the northern alps, rotor clouds at the windward side, warm and dry wind

Question 43

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 44

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 45

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 46

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 47

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 48

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

Accepted Answer

SHRA

Answer

+TSRA

Answer

TS

Answer

+RA

Question 49

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 50

Which weather chart shows the actual air pressure as in MSL along with pressure centres and fronts?

Accepted Answer

Surface weather chart

Answer

Wind chart

Answer

Prognostic chart

Answer

Hypsometric chart

Question 51

A boundary between a cold polar air mass and a warm subtropical air mass showing no horizontal displacement is called...

Accepted Answer

Stationary front

Answer

Cold front

Answer

Warm front

Answer

Occluded front

Question 52

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

Accepted Answer

Gust front

Answer

Electrical discharge

Answer

Anvil-head top of Cb cloud

Answer

Freezing Rain

Question 53

"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 54

What cloud type does the picture show? See figure (MET-002).

Accepted Answer

Cumulus

Answer

Stratus

Answer

Cirrus

Answer

Altus

Question 55

What danger is most imminent during an approach to an airfield situated in a valley, with strong wind aloft blowing perpendicular to the mountain ridge?

Accepted Answer

Wind shear during descent, wind direction may change by 180°

Answer

Reduced visibility, maybe loss of sight to the airfield during final approach

Answer

Formation of medium to heavy clear ice on all aircraft surfaces

Answer

Heavy downdrafts within rainfall areas below thunderstorm clouds

Question 56

What is the gas composition of "air"?

Accepted Answer

Oxygen 21 % Nitrogen 78 % Noble gases / carbon dioxide 1 %

Answer

Oxygen 78 % Water vapour 21 % Nitrogen 1 %

Answer

Oxygen 21 % Water vapour 78 % Noble gases / carbon dioxide 1 %

Answer

Nitrogen 21 % Oxygen 78 % Noble gases / carbon dioxide 1 %

Question 57

The character of an air mass is given by what properties?

Accepted Answer

Region of origin and track during movement

Answer

Wind speed and tropopause height

Answer

Environmental lapse rate at origin

Answer

Temperatures at origin and present region

Question 58

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 59

What is meant by "isothermal layer"?

Accepted Answer

An atmospheric layer with constant temperature with increasing height

Answer

An atmospheric layer where temperature decreases with increasing height

Answer

A boundary area between two other layers within the atmosphere

Answer

An atmospheric layer where temperature increases with increasing height

Question 60

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 61

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 62

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 63

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 64

SIGMET warnings are issued for...

Accepted Answer

FIRs / UIRs

Answer

Specific routings

Answer

Countries

Answer

Airports

Exam simulation Meteorology - SPL - Sailplane Pilot License

Exam simulation SPL Meteorology 120 questions on 120 minutes

Exam simulation Meteorology - SPL - Sailplane Pilot License

Exam simulation SPL Meteorology 120 questions on 120 minutes

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