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Question 19-1 : Roll clouds or rotors are likely to be experienced ? [ Assessment Canada ]

Along the leeward side of a mountain range

Question 19-2 : During summer on arriving to the specified area for your flight you observe fog and sunlight slashes through the fog ?

The flight is possible at the end of the morning.

exemple 23: The flight is possible at the end of the morning
You will be able to take off in 30 minutes. you can take off in the afternoon. the flight is not possible today, you postpone the flight for the next day.

Question 19-3 : Without wind what would be the position of a wind indicator on an aerodrome ?

Completely vertical.

exemple 27: Completely vertical
5 degrees below the horizon. 30 degrees below the horizon. 60 degrees below the horizon.

Question 19-4 : In meteorology a low pressure area is called ?

A low.

exemple 31: A low
An anticylcone. a hurricane. a thalweg.

Question 19-5 : In meteorology a high pressure area is called ?

An anticylcone.

exemple 35: An anticylcone
A low. a hurricane. a thalweg.

Question 19-6 : Always suspect turbulence in the presence of ?

A passing front.

exemple 39: A passing front
Snow. rain. clouds.

Question 19-7 : There is a high probability for morning fog for the following conditions ?

High pressure system with high humidity light wind and a clear night.

exemple 43: High pressure system with high humidity light wind and a clear night
Low pressure system, with high humidity, strong wind and an overcast nocturnal sky. low pressure system, with low humidity, no wind and low temperarture. high pressure system, with low humidity, no wind and high temperarture.

Question 19-8 : The correct statement about the wind speed at altitude is ?

Winds are usually stronger at altitude.

exemple 47: Winds are usually stronger at altitude
Winds are generally of equal speed regardless of altitude. winds are generally lower at altitude. there is usually no wind at altitude.

Question 19-9 : Thunderstorms are associated with a particular type of cloud the cumulonimbus cb generating winds ?

Very variables in direction variation of 180° possible and in speed strong gusts .

exemple 51: Very variables in direction variation of 180° possible and in speed strong gusts
Laminar but variable in direction (up to 90°). very straight but very strong (up to 40 kt). regular in direction and at light speed (maximum 20 kt).

Question 19-10 : A valley breeze anabatic effect generates a wind oriented towards ?

The top of the valley.

exemple 55: The top of the valley
The bottom of the valley during the night. the bottom of the valley. the top of the valley during the night.

Question 19-11 : The sea breeze occurs ?

At forenoon and in the afternoon from sea to land.

Question 19-12 : The land breeze occurring ?

At night because the land is cooling faster than the sea.

Question 19-13 : A valley breeze anabatic effect is established when the slopes of surrounding mountains and hills ?

At day warm up faster than the valley.

Question 19-14 : Condensation of a moist air mass will lead to the creation of ?

A cloud.

exemple 71: A cloud
Turbulences. a jetstream. rolls.

Question 19-15 : Convection is a phenomenon triggered by ?

A vertical movement of air under the effect of a diurna ground heating.

exemple 75: A vertical movement of air under the effect of a diurna ground heating
An horizontal movement of air under the effect of a nocturnal ground heating. a vertical movements of air under the effect of a temperature inversion. an horizontal movement of air under the effect of an isothermal layer.



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