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Meridional flow is characterized by flow that is ________; while zonal flow is characterized by flow that is ________.
helped develop a modern theory of the formation, growth, and dissipation of midlatitude cyclones.
Which of the following are associated with the formation and intensification of surface mid-latitude cyclones?
upper-level divergence and lower-level convergence
This is the first step in classical cyclogenesis for a mid-latitude cyclone:_______
a polar front separates masses of warm and cold air.
Of the following steps in classical cyclogenesis of a mid-latitude cyclone, this happens last:
During cyclogenesis, cloud formation will be least intense here: ______
along the boundary of the warm front.
The Bergen scientists noticed that cyclogenesis commonly initiated at all of the following places, except: ______
in the middle of areas with uniform temperatures.
For a mature mid-latitude cyclone, precipitation is least likely at this point: ______
behind the cold front
Mid-latitude cyclones in the Northern Hemisphere typically travel primarily in this direction:
The passage of a mid-latitude cyclone over Saint Louis would probably begin with this: ______
deepening cloud cover with possible light rain showers.
Regarding vorticity, it is true that: ______
counterclockwise rotation in the Northern Hemisphere has positive vorticity.
The relationship between vorticity and convergence is such that: ______
increased convergence requires an increase in absolute vorticity over time.
Which of the following statements is NOT true? ______
Upper level divergence causes high pressure at the surface.
Which of the following statements is NOT true? ______
Surface cold fronts do not influence the upper troposphere.
Given the implications of the hydrostatic equation, we would expect that:
cold, dense air would have a greater vertical pressure gradient than would warm, light air.
It is true that: ______
the temperature at the surface can affect air flow at upper levels of the atmosphere.
Upper-level air that flows straight from west to east across the United States: ______
does not have pronounced vorticity characteristics.
In the conveyor belt model, this belt enters the storm flowing westward toward the surface cyclone: ______
cold conveyor belt.
The difference between "mid-latitude" cyclones and "tropical" cyclones is that: ______
tropical cyclones have only warm air while mid-latitude cyclones have three kinds of air.
In and during the occlusion process, the mid-latitude cyclone accomplishes its major purpose which is: ______
to mix air of different temperatures.
Rising air is usually associated with a(n) ________ while sinking air is usually associated with a ________. ______
Which of the following more accurately describes the precipitation patterns of a Mature Cyclone?
What % of tropical disturbances die out before ever evolving into more powerful systems?
more then 90%
The tropical disturbances that affect affect the Atlantic Ocean, Caribbean Sea, and the Americas, mostly form over:
western Africa, south of the Sahara desert
Of the following regions, this one receives the smallest average annual number of hurricanes:
Northern Indian Ocean.
A hurricane typically:
has temperatures near its center that are much higher than surrounding temperatures.
The eye of a hurricane has all of the following characteristics, except:
an average passage time of 5-10 minutes.
The most important condition for the formation of a hurricane is:
a deep surface layer of warm ocean water.
Upon reaching the east coast of North America, tropical storms and hurricanes are most likely to move in this general direction:
A hurricane's greatest threat to life and property along coasts comes from:
flooding from storm surge and heavy rain
are issued with an eye toward balancing the economic costs of preparing for a hurricane versus the probability the hurricane will actually hit the projected target area.
On the Saffir-Simpson scale:
the pressure of the hurricane decreases as the category number increases.
Choose the answer that places the hurricane at its proper position with respect to overall storm size:
mid-latitude cyclone, hurricane, thunderstorm, tornado
A hurricane is almost symmetric (round) in shape because: a hurricane has only warm air.
a hurricane has only warm air.
Horizontal air flow in a hurricane is: counter-clockwise at the surface, clockwise aloft.
counter-clockwise at the surface, clockwise aloft.
An easterly wave is: a favorable area for hurricane development.
a favorable area for hurricane development.
The primary over-riding requirement for hurricane development is: water that is at least 27°C (80°F)
water that is at least 27°C (80°F)
The wind speed of a hurricane (in the northern hemisphere) is greatest:
on the right-hand side of the storm.
Tornadoes most often form in the ________ of a hurricane (in the northern hemisphere).
The reason almost all hurricanes occur in the equatorial regions of the earth is because:
it has the largest source of warm water.
The most dangerous aspect to inland areas from hurricane landfall is:
flash flooding from heavy rain.
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