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Convection is a phenomenon triggered by ? Certification > flight

1
A vertical movement of air under effect of a diurna ground heating.


Wind speed ?

2
Wind speed Increases with altitude.


At night as a valley cools down the air becomes denser and flows downward and is referred to as ?

3
At night as a valley cools down air becomes denser and flows downward and referred to as Increases with altitude.


4
A cumulonimbus cloud creates a risk of Increases with altitude.


5
The presence of a cloud cover Reduces daily temperature variation.


6
When isobars on a weather map are close together wind most likely to be Reduces daily temperature variation.


7
The following sequence of clouds 'cirrus cirrostratus altostratus and nimbostratu typically associated to a Reduces daily temperature variation.


8
The dew point temperature the temperature From which water vapor could condense into dew or fog.


9
Thermal turbulence caused Surface heating (convection).


10
Mechanical turbulence the result of Friction between air the ground.


11
The turbulence caused a wind blowing over rough terrain the Mechanical turbulence.


12
The turbulence caused a wind blowing perpendicular to a mountain the Orographic turbulence.


13
Thermal turbulence depends on 1 environment 2 soil contrasts 3 degree of air instability 4 pilot's skill the combination that regroups all of correct statements Orographic turbulence.


14
Steam fog occurs when Very cold air passing over a warm water surface.


15
Wind shear a dangerous phenomenon that characterized A wind velocity variation / wind direction variation over a short distance.


16
Cumulonimbus cb a cloud that generates vertical currents Ascending descending.


17
The cumulonimbus the most dangerous cloud it can be easily recognized since It has a very large vertical extension with a top that can exceed 35 ft.


18
Ground frost may be formed Night time evaporation.


19
The characteristic cloud of an unstable atmosphere Night time evaporation.


20
What a characteristic phenomenon a stable atmosphere Night time evaporation.



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