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
Question 61-5 : Wind shear is a dangerous phenomenon that is characterized by ?
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
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
Question 61-8 : Ground frost may be formed by ?
Night time evaporation
Question 61-9 : The characteristic cloud of an unstable atmosphere is ?
Cumulonimbus
Question 61-10 : What is a characteristic phenomenon for a stable atmosphere ?
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
Question 61-12 : The cumulus stage of a thunderstorm is normally marked by the ?
Onset of updrafts
Question 61-13 : Which of the following items will not affect air stability ?
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
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