The 1-5 scale rating of hurricane intensity is the ________ scale.
Saffir-Simpson
The average hurricane exists, on the average, for about ________.
One week
Tropical cyclones tend to cause the greatest loss of life on the ________
Bay of Bengal.
The month most likely for a hurricane to occur in the Northern Hemisphere is ________.
September
In and near eastern Asia, the place of origin for tropical cyclones is ________.
East of the Philippines
In the Northern Hemisphere, a midlatitude cyclone has winds that circulate ________.
counterclockwise while converging
Stable anticyclones act as a ________ to moving cyclones.
block
Most midlatitude cyclones have ________ .
paths determined by the upper flow
Which of the following best represents the length of the life cycle of a typical midlatitude cyclone?
1 Week
The movement (track along the ground) of middle latitude cyclones is determined by ________.
The Jet Stream
As a middle latitude cyclone goes through its life cycle, the warm sector ________
gets smalller
Which of the following can be said to be the "death" of a midlatitude cyclone?
occlusion
The beginning of a middle latitude cyclone is known as ________.
cyclogenesis
Cyclogenesis occurs along the________.
polar front
In a midlatitude anticyclone, where are the strongest winds usually found?
near the eastern edge
The correct designation for a hurricane is as a(n) ________.
tropical cyclone
The part of the hurricane characterized by scattered high clouds and light winds is known as the ________.
eye
In order to be classified as a hurricane, sustained wind velocity must exceed ________ kilometers per hour (mph).
119 (74)
The energy source of hurricanes is ________.
warm seawater
The "eye" of the hurricane is a zone characterized by ________.
sinking air
Calm, fair weather is most likely to result from a(n) ________.
midlatitude anticyclone
A midlatitude anticyclone ________.
associated with sunny, dry weather
An average air mass is on the order of ________ kilometers in diameter
1600
The warmest air can be found in the ________ air mass
cT
Which of the following is NOT NECESSARILY a property of an air mass?
It must have a warm front at its leading edge.
Which of the following rarely affects North America?
Equatorial
Which of the following occurs least over North America?
Maritime Polar air from the North Atlantic
Of the air masses below, the coldest, driest ones are termed ________.
continental polar
When neither air mass displaces the adjacent one, their boundary is called a(n)
stationary
Fronts are located ________.
at the edges of air masses
________ have the most dynamic and changeable day-to-day weather on Earth.
Latitudes affected by fronts
It can be said that along all the fronts in a middle latitude cyclone, ________.
air rises
On the average, ________ fronts move the fastest of all fronts.
cold
On a weather map, a symbol consisting of triangles arranged along one side of a line indicates a(n) ________ front.
cold
Which of the following probably is least indicative of a cold frontal passage two hours ago?
an increase of temperature
Which type of front typically produces the fastest rise of air?
cold
Which type of front causes many hours of steady rain BEFORE that front passes a location?
warm
The global westerly wind zone most heavily impacts the ________ latitudes.
middle
Midlatitude cyclones and anticyclones function as migratory features in the ________.
westerlies
Upper air divergence is most closely associated with surface ________.
Anticyclone
In the atmosphere, liquid water collects around minute particles called ________
condensation nuclei
In order for atmospheric condensation to take place, ________.
plenty of "surfaces" need to be present in the atmosphere
The rising and subsequent cooling of air at the rate of 10�C per 1,000 meters is called ________.
the dry adiabatic lapse rate
In degrees Celsius, how much GREATER is the dry adiabatic lapse rate than the saturated adiabatic lapse rate over 1,000 meters?
averages around 4
The altitude at which rising air reaches the dew point temperature is the ________
lifting condensation level
Clouds form if air is ________.
cooled to dew point
Among cloud types, those that occur at the highest altitudes are the ________.
cirrus
Clouds of vertical development include the type called ________.
cumulonimbus
Cold air moving over a warmer lake surface will result in a(n) ________ type of fog
evaporation
White frost is simply a cold weather form of ________.
dew
Air that resists vertical movement is said to be ________.
stable
Any buoyant parcel of air is said to exhibit ________.
instability
Buoyant air will rise until it ________
reaches the temperature of the sorrounding air
When air is heated enough so that it is warmer than the surrounding air, it is ________.
unstable
When or where is air most likely unstable?
during the afternoon
Which of the following is most closely associated with stable air?
descent of air
Global dimming is caused by ________
human release of aerosols
Showery precipitation is most closely associated with ________.
unstable air
________ is the term used in the United States for small raindrops that freeze while falling and reach the ground as small
pellets of ice
sleet
Most of the wettest areas around the world are located in the ________.
tropics
In a surface cyclone in the Southern Hemisphere, winds spiral ________.
clockwise and inward
In a surface anticyclone in the Southern Hemisphere, winds spiral ________.
counterclockwise and outward
In the Northern Hemisphere, air converging in a counter-clockwise direction, is termed a(n)
cyclone
Air in an anticyclone always flows ________ in the Northern Hemisphere.
clockwise
Divergence is most closely associated with ________
surface air in anticyclones
An example of a geostrophic wind is ________
Jet stream
The following is an example of a disadvantage of the use of wind power for generating electricity:
The windiest places are seldom densely populated.
Wind power currently generates close to ________ percent of the world's electricity
3 percent
The "horse latitudes" are zones of minimal winds which are associated with the ________ system.
subtropical high pressure
Where would be the most likely place to find a subtropical high?
over subtropical oceans
The so-called "winds of commerce" are the ________ winds.
trade
The largest Hawaiian Islands are in the far northern tropics, and so are in the ________ portion of the global circulation.
trade winds
The region in which the intertropical convergence can be found is ________.
the equator
The doldrums are most closely associated with _____
the ITCZ
The seasonal shift of the intertropical convergence is greatest ________.
over the continents
Which of the following occurs closest to the Equator?
doldrums
Which of the following is NOT descriptive of the intertropical convergence zone?
a cloud-free set of places
Surface westerly winds on a global scale exist because of air flow out of the ________ of the general circulation.
subtropical high preasure
The poles are most closely associated with ________.
high pressure
This part of the global circulation is characterized by rising air, widespread cloudiness, precipitation, and migratory storms.
polar front