METEOROLOGY TEST # 3 - 2010
MULTIPLE CHOICE
1. ? fronts often have a cirrus, cirrostratus, altostratus, nimbostratus, and stratus succession. A.cold
B.warm C.stationary D.occluded
2. The Upper Air Westerlies are found in the middle to upper portion of the A.Troposphere
B.Stratosphere C.Mesosphere D.Thermosphere
3. The presence of ? often leads to a reduced fish catch off the coast of South America. A.the
Westerlies B.Subpolar Cyclones C.the Trade Winds D.the Horse Latitudes E.El Niño
4. Air masses are often modified due to A.heating from underlying surfaces B.moisture content
within underlying surfaces C.radiative cooling of underlying surfaces D.adiabatic processes due
to vertical motion of air parcels E.all of the above modify air masses
5. The symbol for ? fronts consist of triangles and semicircles on the same side of the line. A.cold
B.warm C.stationary D.occluded
6. ? fronts often develop due to the presence of mountains or when the weather front parallels the jet
stream. A.cold B.warm C.stationary D.occluded
7. Comma clouds are often associated with A.Upper Air Westerlies B.Subpolar Cyclones C.Trade
Winds D.Horse Latitudes E.midlatitude cyclones
8. From the Horse Latitudes, atmospheric movement is toward the A.poles B.Equator C.from the
Horse Latitudes, atmospheric movement is both toward the poles and toward the Equator
9. Air moves from areas of ? pressure to areas of ? pressure. A.low, high B.high, low C.air
movement has nothing to do with differences in pressure
10. Three knots would be about ? miles per hour. A.2.3 B.3 C.3.45 D.4.63 E.5
11. Rossby Waves are associated with A.Upper Air Westerlies B.Subpolar Cyclones C.Trade
Winds D.Horse Latitudes E.Doldrums
12. Indian Summer A.occurs in the Western United States B.occurs during early Summer C.often
has mild days and cool nights D.is due to cyclonic activity E.all of the above are true concerning
Indian Summer
13. Continental air masses are typically ? than maritime air masses. A.warmer B.colder
C.temperature and maritime sourcing of air masses are not directly correlative
14. A thunderstorm represents ? weather. A.Planetary-Scale B.Synoptic-Scale C.Mesoscale
D.Microscale
15. The ? spaced the isobars on a weather map, the lower the wind velocity. A.less closely B.more
closely C.there is no correlation between spacing of isobars and wind velocity
16. The jet stream typically forms at the A.tropopause B.stratopause C.mesopause D.jet streams
can develop equally at any of these levels
17. Cumulonimbus clouds are especially associated with ? fronts. A.cold B.warm C.stationary
D.occluded
18. The Subtropical High Pressure Belt includes the region of the A.Westerlies B.Subpolar Cyclones
C.Trade Winds D.Horse Latitudes E.Doldrums
19. The Polar Front develops between the Westerlies and A.Polar Easterlies B.Subpolar Cyclones
C.Trade Winds D.Horse Latitudes E.Doldrums
20. The Beaufort Scale measures A.temperature B.relative humidity C.specific humidity D.wind
speed E.absolute humidity
21. The Southern Oscillation is also termed A.the Westerlies B.Subpolar Cyclones C.the Trade
Winds D.the Horse Latitudes E.El Niño
22. ? air masses originate over northern Mexico and the southwestern United States. A.Continental
Arctic B.Continental Polar C.Maritime Polar D.Maritime Tropical E.Continental Tropical
23. Bent-back occlusion is associated with A.Upper Air Westerlies B.Subpolar Cyclones C.Trade
Winds D.Horse Latitudes E.midlatitude cyclones
24. Stephenville is in the A.Westerlies B.Subpolar Cyclones C.Trade Winds D.Horse Latitudes
E.Doldrums
25. ? often lead to higher sea surface temperatures and suppress upwelling of ocean waters. A.the
Westerlies B.Subpolar Cyclones C.the Trade Winds D.the Horse Latitudes E.El Niño
26. ? weather is the "typical weather map scale" weather. A.Planetary-Scale B.Synoptic-Scale
C.Mesoscale D.Microscale
27. A Geostrophic Wind blows ? to the isobars. A.parallel B.perpendicular C.Geostropic Winds can
blow in any direction
28. The ITCZ includes the region of the A.Westerlies B.Subpolar Cyclones C.Trade Winds D.Horse
Latitudes E.Doldrums
29. A ? is atmospheric circulation around a low pressure center. A.trough B.cyclone C.both of these
represent atmospheric circulation around a low pressure center
30. Wind speed is measured by A.hygrometers B.psychrometers C.barometers D.wind socks
E.anemometers
31. The regions around the Aleutians and Iceland are within the A.Polar Easterlies B.Subpolar
Cyclones C.Polar Anticyclones D.Horse Latitudes E.Doldrums
32. The symbol of a ? front is a series of triangle-shaped points. A.cold B.warm C.stationary
D.occluded
33. The ? is a region of low pressure. This area has extremely high precipitation. A.Westerlies
B.Subpolar Cyclones C.Trade Winds D.Horse Latitudes E.Doldrums
34. El Niño develops within the area of A.the Westerlies B.Subpolar Cyclones C.the Trade Winds
D.the Horse Latitudes E.the Doldrums
35. ? air masses originate southwest of Baja, California. A.Continental Arctic B.Continental Polar
C.Maritime Polar D.Maritime Tropical E.Continental Tropical
36. Midlatitude cyclones may weaken due to A.loss of warm, moist air B.latent heat loss C.friction
from the underlying surface D.weakening jet stream activity E.all of these factors may cause
midlatitude cyclones to weaken
TRUE/FALSE (T/F):
37. The Polar Front Jet Stream has higher wind speeds in the Winter than in the Summer.
38. Wind pressure is proportional to the square of the wind speed.
39. Dew, frost and fog is typically associated with anticyclones.
40. The Coriolis Effect is stronger at the Poles than at the Equator.
41. Atmospheric pressure differences are primarily due to unequal surface heating.
42. Stormy weather is often associated with the Polar Front.
43. During cyclogenesis, the midlatitude cyclone develops.
44. Air masses may cover a large portion of a continent.
45. In the Northern Hemisphere, flow around an anticyclone is counterclockwise.
46. The Bermuda High is a warm-core anticyclone.
47. The Aleutian and Icelandic Lows especially develop during the Winter.
48. Upper Air Westerlies have both cyclonic and anticyclonic flow.
49. During the formation of midlatitude cylones, there is often strong horizontal divergence aloft.
50. Isobars connect points of equal temperature on a weather map.
51. In the Northern Hemisphere, midlatitude cyclones typically have westerly movement.
52. Air Masses are defined primarily by their temperature and barometric pressure.
53. Warm fronts typically move faster than cold fronts since they have less dense air.
54. Often times a "new" midlatitude cyclone develops at the point of occlusion.
55. In the region of Subtropical Anticyclones, there is abundant precipitation.
56. Circulation intensity decreases with altitude in cold-core lows.
57. Dust devils are warm core lows.
58. The Westerlies are better developed in the Northern Hemisphere than in the Southern
Hemisphere.
59. Geostrophic Winds are more pronounced at higher altitudes than close to the ground surface.
60. During the Spring, global circulation patterns begin to shift toward the poles.
61. Midlatitude cyclones can travel half-way around the Earth.
62. Wind directions are opposite for cyclones in the Southern Hemisphere versus the Northern
Hemisphere.
63. The Northeast Trades are in the Northern Hemisphere.
64. The January Thaw is due to cyclonic activity.
65. The higher the wind speed, the greater the Coriolis deflection.
66. In a midlatitude cyclone, the cold front is typically east of the center of low pressure.
67. During frontolysis, the front grows stronger since the density contrasts are greater.
68. Cold-Type Occlusion is more common than Warm-Type Occlusion.
69. Gulf Air is a type of maritime equatorial air mass.
70. Blocking Systems develop due to extreme meridional flow within Upper Air Westerlies.
71. The air on either side of fronts and along the frontal boundary is in constant motion.
72. Gravity varies with both latitude and altitude.
73. Cold fronts have a "blunter" leading edge than warm fronts.
74. The Azores and Hawaiian Highs especially develop during the Winter.
75. El Niño weather conditions are typically opposite those of La Niña.
76. Microscale systems often greatly affect the weather, such as tornadoes.
77. Arctic air masses are situated more poleward than Polar Air masses.
78. Long-Wave Patterns of the Upper Air Westerlies shift position abruptly.
79. When fronts move through, the wind often shifts direction.
80. Squall lines are bands of intense thunderstorms that develop at or ahead of fronts.
81. The Coriolis Effect is pronounced in the region of the Doldrums.
82. Freezing rain often develops along warm fronts, where rain falls into the colder freezing air below.
83. Midlatitude Cyclones are also termed Tropical Cyclones.
84. In the Northern Hemisphere, if you stand with your back to the wind the high pressure center will
typically be on your left.
85. The Upper Air Westerlies are stronger during the Winter.
86. Wind direction is defined as the direction toward which the wind is blowing.
87. The rising air of the Hadley Cell is deflected eastward in the Northern Hemisphere.
88. The Subtropical Jet Stream has higher velocities than the Polar Front Jet Stream due to higher
temperatures in the Subtropics.
89. The Zonal Component of an Upper Air Westerly is oriented north-south.
90. The Arizona "Monsoons" occur during the Winter.
91. Wind pressure decreases with altitude due to the Friction Layer.
92. The Polar Front Jet Stream often splits into "branches".
93. In the region of subtropical anticyclones, winds tend to be persistent.
94. In the Northern Hemisphere free-moving objects tend to veer toward the left.
95. Ridges are very similar to troughs in their atmospheric pressure characteristics.
96. Jet stream convergence aloft aids the development of cyclones.
97. Friction Layer Winds typically blow parallel to the isobars.
98. In convective circulation, upper level and lower level winds often blow in opposite directions.
99. Blocking Systems often form cutoff lows and highs that enhance extreme weather conditions.
100. Polar Front Jet Streams in the Northern Hemisphere are situated farther north in the Winter than
during the Summer.