MET Q19 - Non-Frontal Depressions Flashcards
What is the main energy source of a tropical revolving storm?
Select one:
a.The equatorial jet stream
b.Temperature difference between the equatorial low pressure trough and sub-tropical high pressure belts
c.Latent heat from condensing water vapour
d.Cold air advancing from temperate latitudes
c.Latent heat from condensing water vapour
The number of TRS that typically occur off the east coast of USA is
Select one:
a.5
b.16
c.7
d.12
c.7
TRS that occur in the northern Indian ocean
Select one:
a.are called Typhoons and occur December to April
b.are called Typhoons and occur May to November
c.are called cyclones and occur December to April
d.are called cyclones and occur May to November
d.are called cyclones and occur May to November
Extensive cloud and precipitation are often associated with a non-frontal thermal depression due to
Select one:
a.surface divergence and upper level convergence causing widespread descent of air
b.surface convergence and upper level divergence causing widespread descent of air
c.surface convergence and upper level divergence causing widespread ascent of air
d.surface divergence and upper level convergence causing widespread ascent of air
c.surface convergence and upper level divergence causing widespread ascent of air
A depression which typically forms over water in winter where warmer oceans border cold land masses is a
Select one:
a.Orographic Depression
b.Secondary Depression
c.Polar Air Depression
d.Thermal Depression
c.Polar Air Depression
Where is an orographic depression to be anticipated?
Select one:
a.In a flat coastal region
b.On the lee side of a mountain range
c.Over water in winter
d.On the windward side of a mountain
b.On the lee side of a mountain range
The number of TRS that typically occur in the south western Indian Ocean is
Select one:
a.2
b.9
c.5
d.16
c.5
(region of Madagascar)
Where is the most dangerous zone in a tropical revolving storm?
Select one:
a.About 600km away from the eye
b.Anywhere in the eye
c.In the wall of clouds around the eye
d.In the centre of the eye
c.In the wall of clouds around the eye
Tropical Revolving Storms generally occur
Select one:
a.from June to October in the Northern Hemisphere
b.from December to April I the Northern Hemisphere
c.within 5 degrees of the Equator but not in the Southern Atlantic Ocean
d.from June to October in the Southern Hemisphere
a.from June to October in the Northern Hemisphere
A storm is officially categorised as a TRS when it has sustained wind speeds of
Select one:
a.60 KT
b.100 KT
c.64 KT
d.80 KT
c.64 KT
