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WX 201 FINAL EXAM QUESTIONS AND ANSWERS
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WX 201 FINAL EXAM QUESTIONS AND ANSWERS
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WX 201 FINAL EXAM QUESTIONS AND ANSWERSClouds and precipitation are frequently found on the downwind side of a large lake. This
would indicate that the air on the downwind side is
a. diverging and sinking
b. diverging and rising
c. Stable and rising
d. converging and rising
e. converging and sinking - Answers-e. converging and sinking
If the flow of air into a surface low pressure area is greater than the divergence of air
aloft, the surface pressure in the center of the low will
a. increase
b. decrease
c. drop rapidly
d. remain the same
e. deepen - Answers-a. increase
Vorticity refers to the
a. spin of air parcels
b. formation of clouds
c. development of a wave cyclone
d. rising and sinking of air along weather front
e. changing of the seasons - Answers-a. spin of air parcels
Before the passage of a cold front the pressure normally _, and after the passage of a
cold front the pressure normally_
a. does not change; drops
b. drops; drops
c. rises; drops
d. rises; rises
e. drops; rises - Answers-e. drops; rises
As westerly winds blow over a north-south oriented mountain range, the airflow is
deflected in such a way that a trough on the _ side of the mountain.
a. both upwind and downwind
b. upwind
c. side
d. north
e. downwind - Answers-e. downwind
,The Coriolis force acts at a _ degree angle to the wind.
a. 30
b. 90
c. 20
d. 10
e. 45 - Answers-b. 90
One would expect a cP air mass to be
a. cold and dry
b. cold and moist
c. warm and moist
d. temperate and dry
e. warm and dry - Answers-a. cold and dry
Due to Hadley cell formation and the Coriolis force in both hemispheres, winds aloft flow
a. easterly
b. westerly
c. southerly
d. randomly
e. northerly - Answers-b. westerly
A geostrophic wind is a wind that results from a balance between the ( ) force and the ( )
force.
a. Coriolis; pressure gradient
b. Coriolis; gravitational
c. pressure gradient frictional
d. Coriolis; frictional
e. pressure gradient; graviational - Answers-a. Coriolis; pressure gradient
Squall lines most often form ahead of a
a. warm front
b. cold-type occluded front
c. cold front
d. stationary front
e. warm-type occluded front - Answers-c. cold-front
Because of friction, surface winds move _ winds aloft with the same pressure gradient
a. at the same speed as
b. twice as fast as
c. faster than
,d. at half the speed as
e. more slowly than - Answers-e. more slowly than
Northeasters (or nor'easters) are mid altitude storms commonly found along
a. both the Pacific and Atlantic coasts of North America
b. the Gulf coast coast of North America
c. the Pacific coast of both North and South
d. the Atlantic coast of North America
e. the Pacific coast of North America - Answers-d. the Atlantic coast of North America
The wind around a surface high pressure center in the Northern Hemisphere blows
a. counterclockwise and inward toward the center
b. clockwise and outward from the center
c. clockwise and parallel to the center
d. clockwise and inward toward the center
e. counterclockwise and outward from the center - Answers-b. clockwise and outward
from the center
What is a serious hazard to aircraft?
a. longwaves in the westerlies
b. molecular viscosity
c. thermal lows
d. laminar flow
e. clear-air turbulence - Answers-e. clear-air turbulence
The wind's speed generally increases with height above Earth's surface because
a. air temperature normally decreases with height
b. friction with Earth's surface slows the air near the ground
c. only the lowest layer of air rotates with Earth
d. wind instruments are not accurate at Earth's surface
e. air parcels expand and become less dense as they rise above the surface - Answers-
b. friction with Earth's surface slows the air near the ground
Which name is given to a large cyclonic storm system that forms in the middle latitudes
a. taifoon
b. thunderstorm
c. middle latitude cyclone
d. tornado
e. anticyclone - Answers-c. middle latitude cyclone
A true cold front on a weather map is always
, a. followed by cooler air
b. followed by drier air
c. associated with precipitation
d. associated with a wind shift
e. followed by moist air - Answers-a. followed by cooler air
The large thermally driven convection cell that is driven by convective "hot" towers
along the equator is the
a. Doldrum cell
b. Ekman spiral
c. Hadley cell
d. Ferrel cell
e. El Nino cell - Answers-c. Hadley cell
An offshore wind blows
a. from water to land
b. only at night
c. from land to water
d. only during the day
e. a minimum distance of 100 miles away from the shor - Answers-c. from land to water
The world's deserts are found at 30 latitude because
a. of the convergence of the prevailing westerlies and the Northeast Trades
b. of the doldrums
c. of the sinking air of the subtropical highs
d. of the sinking air of the polar front
e. the intertropical convergence zone is located there - Answers-c. of the sinking air of
the subtropical highs
Which air masses are formed in regions where long, clear nights allow for strong
radiational cooling of the surface
a. cT and cP
b. cP and cA
c. cT and mT
d. cA and cT
e. mT and cA - Answers-b. cP and cA
Horizontal pressure variations cause air to move from areas of _ pressure to areas of _
pressure
a. low; high
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