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Question 61-1 : The turbulence caused by a wind blowing over rough terrain is the ? [ Formation weather ]

Mechanical turbulence


Question 61-2 : The turbulence caused by a wind blowing perpendicular to a mountain is the ?

Orographic turbulence


Question 61-3 : Thermal turbulence depends on 1 environment 2 the soil contrasts 3 the degree of air instability 4 the pilot's skill the combination that regroups all of the correct statements is ?

1 2 3


Question 61-4 : Steam fog occurs when ?

Very cold air passing over a warm water surface

exemple 73 Very cold air passing over a warm water surface.

Question 61-5 : Wind shear is a dangerous phenomenon that is characterized by ?

A wind velocity variation / wind direction variation over a short distance

exemple 77 A wind velocity variation / wind direction variation over a short distance.

Question 61-6 : Cumulonimbus cb is a cloud that generates vertical currents ?

Ascending and descending

exemple 81 Ascending and descending.

Question 61-7 : The cumulonimbus is the most dangerous cloud it can be easily recognized since ?

It has a very large vertical extension with a top that can exceed 35000 ft

exemple 85 It has a very large vertical extension, with a top that can exceed 35000 ft.

Question 61-8 : Ground frost may be formed by ?

Night time evaporation

exemple 89 Night-time evaporation.

Question 61-9 : The characteristic cloud of an unstable atmosphere is ?

Cumulonimbus

exemple 93 Cumulonimbus.

Question 61-10 : What is a characteristic phenomenon for a stable atmosphere ?

Stratified clouds

exemple 97 Stratified clouds.

Question 61-11 : The name of the phenomenon that describes very large variations in wind speed which can sometimes be caused by a line of thunderstorms is ?

Squall

exemple 101 Squall.

Question 61-12 : The cumulus stage of a thunderstorm is normally marked by the ?

Onset of updrafts

exemple 105 Onset of updrafts.

Question 61-13 : Which of the following items will not affect air stability ?

Dew point

exemple 109 Dew point.

Question 61-14 : Which of the following is not a service provided by nav canada ?

Sat comm


Question 61-15 : Thermal ascents are created by ?

Surface heating

exemple 117 Surface heating.


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