Other Depressions: DGCA Aviation Meteorology questions

Question 1

A thermal depression is likely to form:

Accepted Answer

over the Iberian peninsular during the summer

Answer

in the lee of the Alps over northern Italy in winter

Answer

in association with a marked trough of low pressure over the USA

Answer

on the trailing edge of a warm sector mid latitude depression

Question 2

Tropical revolving storms usually:

Accepted Answer

do not form within 5° of the Equator

Answer

form close to one side of the Equator and while moving slowly in a westerly direction, cross over to the other hemisphere

Answer

move in a westerly direction before recurving towards the Equator

Answer

move in an easterly direction before recurving towards the nearest pole

Question 3

With reference to tropical revolving storms, which of the following statements is correct?

Accepted Answer

Hurricanes affect the southeast of the USA in late summer

Answer

Typhoons are found in the South China sea in January

Answer

Cyclones occur in the Bay of Bengal in winter

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Hurricanes in the South Atlantic sometimes affect the east coast of Brazil

Question 4

Which of the following statements accurately describes the “West African tornado”?

Accepted Answer

it is a line of thunderstorms producing a line squall aligned roughly north/south

Answer

The West African tornado is similar to the North American and European tornadoes

Answer

it is another name for the cyclones that affect the West African coast in summer

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it is the name given to a line of thunderstorms that lie along the ITCZ but some 200 miles to the south

Question 5

Extensive cloud and precipitation is often associated with a non-frontal thermal depression because of:

Accepted Answer

surface convergence and upper level divergence causing widespread ascent of air in the depression

Answer

surface divergence and upper level convergence causing widespread descent of air in the depression

Answer

surface convergence and upper level divergence causing widespread descent of air in the depression

Answer

surface divergence and upper level convergence causing widespread ascent of air in the depression

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