Exam quiz Meteorology - Quiz BPL Hot Air - Balloon Pilot License

Question 1

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

Visibilty less than 1000 m, cloud-covered ground

Answer

Moderate visibility, heavy showers and thunderstorms

Answer

Good visibility, some isolated high clouds

Question 2

What cloud type does the picture show? See figure (MET-004). Siehe Anlage 3

Accepted Answer

Cirrus

Answer

Altocumulus

Answer

Stratus

Answer

Cumulus

Question 3

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 4

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 5

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).

Question 6

The movement of air flowing together is called...

Accepted Answer

Convergence.

Answer

Subsidence.

Answer

Divergence.

Answer

Soncordence.

Question 7

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 8

Which of the stated surfaces will reduce the wind speed most due to ground friction?

Accepted Answer

Mountainous areas, vegetation cover

Answer

Flat land, lots of vegetation cover

Answer

Oceanic areas

Answer

Flat land, deserted land, no vegetation

Question 9

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 10

The symbol labeled (2) as shown in the picture is a / an... See figure (MET-005) Siehe Anlage 4

Accepted Answer

Warm front.

Answer

Front aloft.

Answer

Cold front.

Answer

Occlusion.

Question 11

What conditions are mandatory for the formation of thermal thunderstorms?

Accepted Answer

Conditionally unstable atmosphere, high temperature and high humidity

Answer

Absolutely stable atmosphere, high temperature and high humidity

Answer

Absolutely stable atmosphere, high temperature and low humidity

Answer

Conditionally unstable atmosphere, low temperature and low humidity

Question 12

What is meant by "isothermal layer"?

Accepted Answer

An atmospheric layer with constant temperature with increasing height

Answer

A boundary area between two other layers within the atmosphere

Answer

An atmospheric layer where temperature decreases with increasing height

Answer

An atmospheric layer where temperature increases with increasing height

Question 13

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 14

What conditions are favourable for the formation of thunderstorms?

Accepted Answer

Warm humid air, conditionally unstable environmental lapse rate

Answer

Warm and dry air, strong inversion layer

Answer

Clear night over land, cold air and patches of fog

Answer

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

Question 15

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 16

What type of turbulence is typically found close to the ground on the lee side during Foehn conditions?

Accepted Answer

Turbulence in rotors

Answer

Clear-air turbulence (CAT)

Answer

Inversion turbulence

Answer

Thermal turbulence

Question 17

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 18

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

Accepted Answer

After passing of a cold front

Answer

During Foehn at the lee side

Answer

Before passing of an occlusion

Answer

After passing of a warm front

Question 19

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 20

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 21

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 22

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 23

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

Accepted Answer

Low pressure gradients resulting in low prevailling wind

Answer

Strong pressure gradients resulting in strong prevailling wind

Answer

Strong pressure gradients resulting in low prevailling wind

Answer

Low pressure gradients resulting in strong prevailling wind

Question 24

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 25

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 26

What cloud type does the picture show? See figure (MET-002). Siehe Anlage 2

Accepted Answer

Cumulus

Answer

Altus

Answer

Stratus

Answer

Cirrus

Question 27

What clouds and weather may result from an humid and instable 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

Overcast low stratus (high fog) with no precipitation.

Answer

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

Answer

Thin Altostratus and Cirrostratus clouds with light and steady precipitation.

Question 28

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 29

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

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

Answer

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

Answer

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

Question 30

With other factors remaining constant, decreasing temperature results in...

Accepted Answer

Decreasing spread and increasing relative humidity.

Answer

Decreasing spread and decreasing relative humidity.

Answer

Increasing spread and decreasing relative humidity.

Answer

Increasing spread and increasing relative humidity.

Question 31

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

Accepted Answer

Liquid, solid, and gaseous

Answer

Gaseous and liquid

Answer

Liquid and solid

Answer

Liquid

Question 32

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 33

Clouds in high layers are referred to as...

Accepted Answer

Cirro-.

Answer

Strato-.

Answer

Alto-.

Answer

Nimbo-.

Question 34

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 35

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 36

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 37

What weather conditions may be expected during conditionally unstable conditions?

Accepted Answer

Towering cumulus, isolated showers of rain or thunderstorms

Answer

Layered clouds up to high levels, prolonged rain or snow

Answer

Shallow cumulus clouds with base at medium levels

Answer

Sky clear of clouds, sunshine, low winds

Question 38

What is referred to as mountain wind?

Accepted Answer

Wind blowing down the mountain side during the night

Answer

Wind blowing uphill from the valley during daytime

Answer

Wind blowing uphill from the valley during the night.

Answer

Wind blowing down the mountain side during daytime

Question 39

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 40

Which stage of a thunderstorm is dominated by updrafts?

Accepted Answer

Cumulus stage

Answer

Upwind stage

Answer

Mature stage

Answer

Dissipating stage

Question 41

How is an air mass described when moving to Central Europe via the Russian continent during winter?

Accepted Answer

Continental polar air

Answer

Continental tropical air

Answer

Maritime tropical air

Answer

Maritime polar air

Question 42

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

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

Answer

Overhead unbroken cloud layers.

Question 43

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

Accepted Answer

Good visiblity, 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, visbility more than 5 km, formation of shallow cumulus clouds

Question 44

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 45

What is the ISA standard pressure at FL 180 (5500 m)?

Accepted Answer

500 hPa

Answer

1013.25 hPa

Answer

300 hPa

Answer

250 hPa

Question 46

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 47

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

Accepted Answer

Dew point remains constant, relative humidity increases

Answer

Dew point increases, relative humidity decreases

Answer

Dew point remains constant, relative humidity decreases

Answer

Dew point decreases, relative humidity increases

Question 48

With regard to thunderstorms, strong up- and downdrafts appear during the...

Accepted Answer

Mature stage.

Answer

Dissipating stage.

Answer

Thunderstorm stage.

Answer

Initial stage.

Question 49

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 50

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

Accepted Answer

Showers and thunderstorms.

Answer

Stabilisation and calm weather

Answer

Calm weather and cloud dissipation.

Answer

Frontal weather.

Question 51

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

By warming of upper atmospheric layers

Question 52

What information can be obtained from satallite 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 53

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 54

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 55

The temperature lapse rate with increasing height within the troposphere according 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 56

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 57

The pressure at MSL in ISA conditions is...

Accepted Answer

1013.25 hPa.

Answer

113.25 hPa.

Answer

1123 hPa

Answer

15 hPa.

Question 58

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

Accepted Answer

.+RA

Answer

RA

Answer

.+SHRA.

Answer

SHRA.

Question 59

"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

Instability, high pressure area with calm wind.

Question 60

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 61

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 62

Clouds are basically distinguished by what types?

Accepted Answer

Cumulus and stratiform clouds

Answer

Layered and lifted clouds

Answer

Thunderstorm and shower clouds

Answer

Stratiform and ice clouds

Question 63

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 64

How does air temperatur 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 -15° to 50°C

Answer

From +20° to -40°C

Exam simulation Meteorology Quiz BPL Hot Air - Balloon Pilot License

Exam simulation BPL Hot Air Meteorology 100 questions on 120 minutes