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Question 21-1 : The characteristic cloud of an unstable atmosphere is ? [ Session drone ]

Cumulonimbus

exemple 21 Cumulonimbus.

Question 21-2 : What is a characteristic phenomenon for a stable atmosphere ?

Stratified clouds

exemple 25 Stratified clouds.

Question 21-3 : 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 29 Squall.

Question 21-4 : Thermal ascents are created by ?

Surface heating

exemple 33 Surface heating.

Question 21-5 : Best conditions for the establishment of a land breeze are ?

At night clear to little cloudy sky

exemple 37 At night, clear to little cloudy sky.

Question 21-6 : The curves or lines that connect the points of equal pressure are called the ?

Isobars

exemple 41 Isobars.

Question 21-7 : Convective activity of the atmosphere usually result in ?

Some turbulence

exemple 45 Some turbulence.

Question 21-8 : Lenticular clouds are usually associated with ?

A mountain wave

exemple 49 A mountain wave.

Question 21-9 : The dangerous phenomena associated with cumulonimbus cb are .1 hail.2 turbulence.3 wind shear.4 lightning.5 fog.choose the most complete exact combination ?

1 2 3 4

exemple 53 1, 2, 3, 4.

Question 21-10 : Winds generated by cumulonimbus associated with thunderstorms are dangerous because they are .1 highly irregular in direction.2 highly irregular in speed.3 laminar.4 responsible for wind shear.5 generators of strong gusts.6 highly regular in speed ?

1 2 4 and 5

exemple 57 1, 2, 4 and 5.

Question 21-11 : When mist is reported the visibility is ?

Between 1 km and 5 km


Question 21-12 : When the wind arrives over land wind speed ?

Decreases


Question 21-13 : When the wind arrives on the ground it ?

Slows down


Question 21-14 : Clouds .which cloud type indicates the presence of significant vertical currents at low levels ?

Cumulus

exemple 73 Cumulus.

Question 21-15 : Among the following clouds the one most likely to produce hail is the ?

Cumulonimbus

exemple 77 Cumulonimbus.


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