METEOROLOGY LECTURE TEST # 2 – SPRING 2012
1. ? humidity is the mass of water vapor per unit volume of air. A.specific B.relative
C.absolute D.this defines all of these humidity types
2. Which of the following is not true concerning the Bergeron Process? A.both ice
crystals and supercooled water droplets present in clouds with temperature above
freezing B.water droplets evaporate and water vapor deposited on ice crystals
C.ice crystals fall into lower atmosphere and often melt D.all of the above are true
concerning the Bergeron Process E.none of the above is true concerning the
Bergeron Process
3. Colored rings around the moon or sun due to diffraction of light around spherical
cloud droplets is a A.halo B.rainbow C.optical corona D.glory E.aurora australis
4. As an air parcel descends, its temperature increases at the ? adiabatic lapse rate.
A.wet B.dry C.wet or dry
5. A type of fog where calm, humid air overlies a chilled land surface is A.radiation
fog B.advection fog C.steam fog D.upslope fog E.all of the above
6. A low cloud that is thick and dark, with fairly steady precipitation, is a A.stratus
B.stratocumulus C.nimbostratus D.cumulus E.cumulonimbus
7. A ? mirage appears below the true location of the object. A.inferior B.superior
C.this can be true for both inferior and superior mirages
8. Which of the following is not true concerning rain? A.most common type of
precipitation B.1-6 mm diameter C.often start as snowflakes or hail in
cumulonimbus or nimbostratus clouds D.all of the above are true E.none of the
above is true
9. An arc of concentric colored bands due to refraction and internal reflection of
sunlight by raindrops is a A.halo B.rainbow C.optical corona D.glory E.aurora
australis
10. ? mirages would most often occur in polar regions. A.inferior B.superior C.this
can be true for both inferior and superior mirages
11. A type of fog that looks like rising streamers is A.radiation fog B.advection fog
C.steam fog D.upslope fog E.all of the above
12. Air parcels may rise due to all of the following except A.convection B.orographic
uplift C.convergence of air D.lifting along fronts E.air parcels may rise due to all
of the above
13. ? is the temperature where air becomes saturated with water vapor.
A.transpiration B.dew point C.hydrologic cycle D.absolute humidity E.specific
humidity
14. Which of the following is true concerning the collision-coalescence process? A.is
found in cold clouds B.water droplets of equal size with the same terminal
velocities collide C.collisions and "wake capture" cause droplets to coalesce D.is
probably the most common process in temperate regions E.all of the above are
true concerning the collision-coalescence process
15. If the ascending air is always warmer than the environment there will be
A.absolute stability B.absolute instability C.conditional instability D.it could have
all of these types of stability/instability
16. A type of fog that is most common when warm, humid air is forced over cold
ocean currents is A.radiation fog B.advection fog C.steam fog D.upslope fog
E.all of the above
17. Atmospheric stability is enhanced by A.radiation cooling of earth's surface after
sunset B.cooling of air mass from below as it traverses a cold surface
C.subsidence D.all of the above E.none of the above
18. ? humidity is the ratio of water vapor in the air to the maximum allowable amount
for a given temperature. A.specific B.relative C.absolute D.this defines all of
these humidity types
19. Which of the following is true concerning condensation? A.amount depends on
how much the air is cooled below the dew point B.warm air with greater potential
for precipitation than cooler air C.a suitable surface must be present before
condensation can occur D.all of the above are true E.none of the above is true
20. A low cloud that is thick and looks like fog but is above the ground is a A.stratus
B.stratocumulus C.nimbostratus D.cumulus E.cumulonimbus
21. ? are due to the reflection of sunlight off ice crystals; they consist of vertical
streaks of light. A.optical corona B.glory C.heiligenschein D.sun pillar E.sun
dog
22. According to the Gas Laws, if pressure of a gas is held constant and temperature
increases, the volume of the gas A.increases B.decreases C.remains the same
23. Which of the following is true concerning adiabatic processes? A.cooling or
warming air parcel by moving vertically B.with expansional warming or
compressional cooling C.heat additions and losses typically occur D.has little
influence in vertical temperature change of air masses E.all of the above are true
concerning adiabatic processes
24. In ? the parcels consist of moist air with a lapse rate between the dry and wet
adiabatic rate. A.absolute stability B.absolute instability C.conditional instability
D.it could have all of these types of stability/instability
25. Conditional unstable air A.begins ascent as unstable air B.above condensation
level becomes stable C.is probably the most common instability type D.all of the
above are true E.none of the above is true
26. A high cloud consisting of fibrous, feathery "mare's tails" is a A.cirrus
B.cirrostratus C.cirrocumulus D.altostratus E.altocumulus
27. Low level saturation processes A.take place at the Earth’s surface where relative
humidity is less than 100% due to cooling B.causes dew, frost or fog C.all of the
above are true D.none of the above is true
28. A type of fog, often termed "ground fog", is usually found over marshy areas or
wet soils. This is also referred to as A.radiation fog B.advection fog C.steam fog
D.upslope fog E.all of the above
29. Which of the following is true concerning frontal wedging? A.cool air acts as a
barrier over which warmer, lighter air rises B.is responsible for most precipitation
in many areas C.all of the above are true D.none of the above is true
30. ? often appear as castle-like figures rising on the horizon. A.Virga B.Fata
Morgana C.Sun Pillar D.Crepuscular Rays E.Heiligenschein
31. A middle cloud characterized by "globules" that are often in rows or waves is a
A.cirrus B.cirrostratus C.cirrocumulus D.altostratus E.altocumulus
32. ? are “sunbeams”. A.Virga B.Fata Morgana C.Sun Pillar D.Crepuscular Rays
E.Heiligenschein
33. The rate of evaporation depends on A.amount of water vapor already in the air
B.wind speed C.temperature of the water D.all of the above E.none of the above
34. A cloud with extreme vertical development that forms "thunderheads" with an
anvil top is a A.stratus B.stratocumulus C.nimbostratus D.cumulus
E.cumulonimbus
35. In ? mirages sunlight is bent downward. A.inferior B.superior C.this can be true
for both inferior and superior mirages
36. Snow may be measured in terms of A.depth each 12 hour period B.depth on
ground at observation time C.sometimes measure meltwater equivalent, which
averages 1/30th snow depth D.all of the above are true concerning snow
measurement E.none of the above is true concerning snow measurement
37. Which of the following is true concerning hail? A.large ice pellets ranging from 5
to about 190 meters in diameter B.consist of concentric milky rings (slow
freezing) alternating with clear rings (rapid freezing) C.is due to cycling pellets in
large updrafts and downdrafts in mature nimbostratus clouds D.commonly occurs
with thunderstorms 15 km or more in height E.all of the above are true
38. Which of the following is true concerning subsidence? A.is downward air flow
B.the lower portion of subsiding air heated by compression C.upper air usually
not involved in subsidence and with temperature remaining unchanged D.is
unstable air E.all of the above are true concerning subsidence
39. ? are faint white rings that form on dew-covered lawns that surround the
observer’s head. A.optical corona B.glory C.heiligenschein D.sun pillar E.sun
dog
40. A type of fog where there is cooling of upward-moving air along a ground surface
is A.radiation fog B.advection fog C.steam fog D.upslope fog E.all of the above
41. Which of the following is true concerning freezing rain? A.may produce
hazardous glaze B.water freezes in colder atmosphere above and falls to the
ground C.a temperature conversion is needed D.all of the above are true E.none
of the above is true
42. Which of the following is true concerning snow? A.water vapor deposits directly
as solid six-sided crystal B.most common just north of center of low pressure C.is
formed where warm moist air overrides colder air D.all of the above are true
E.none of the above are true
43. A low cloud that is thick and consists of wave-like "globules" is a A.stratus
B.stratocumulus C.nimbostratus D.cumulus E.cumulonimbus
44. At the wet adiabatic rate, temperature decreases A.10oC/1 km B.5.5oF/1000 ft
C.all of the above D.none of the above
45. Which of the following is true concerning the Gas Laws and their effects? A.if
temperature is held constant, volume of gas varies inversely as pressure varies
B.at the same temperature more dense air has higher pressure than less dense air,
and vice versa C.all of the above are true D.none of the above is true
46. Clouds with greater horizontal extent are termed A.stratus B.cumulus C.either
stratus or cumulus may have great horizontal extent
47. A shaft of falling precipitation that evaporates before it hits the ground is termed
A.Virga B.Fata Morgana C.Sun Pillar D.Crepuscular Rays E.Heiligenschein
48. A device that utilizes the difference of wet and dry bulb thermometer readings to
determine relative humidity is a A.electrical hygrometer B.radiosonde
C.psychrometer D.hydrograph E.all of the above use the difference between wet
and dry bulb thermometer readings
49. The speed at which a particle descends is termed the A.particle velocity
B.terminal velocity C.precipitation velocity D.updraft E.water budget
50. Which of the following is true concerning fog? A.cloud layer in contact with the
Earth's surface B.restricts visiblity to between 1 and 2 km (less than 1 km visibility
is termed mist) C.all of the above are true D.none of the above is true
51. If the environmental lapse rate is less than the wet adiabatic rate the air parcel will
have A.absolute stability B.absolute instability C.conditional instability D.it
could have all of these types of stability/instability
52. A type of fog where cold air moves over warm water and evaporates it is
A.radiation fog B.advection fog C.steam fog D.upslope fog E.all of the above
53. Which of the following would not enhance atmospheric instability? A.intense solar
heating warms air from below B.heating of air mass from below as it traverses a
warm surface C.orographic lifting D.frontal wedging E.all of the above enhance
atmospheric instability
54. Another name for parhelia is A.optical corona B.glory C.heiligenschein D.sun
pillar E.sun dog
55. Which of the following is true concerning high clouds? A.composed of ice
crystals B.are rather thick C.have bases at more than 18 km altitude D.all of the
above are true E.none of the above is true
56. A high cloud consisting of small "globules" is a A.cirrus B.cirrostratus
C.cirrocumulus D.altostratus E.altocumulus
57. Which of the following is not true concerning snow pellets? A.is often termed
graupel B.consists of 2-5 mm white, spherical ice grains C.grow as supercooled
droplets freeze on ice crystals D.all of the above are true concerning snow pellets
E.none of the above is true concerning snow pellets
58. A cloud with a dense, dome-shaped top that may be isolated or occur together is a
A.stratus B.stratocumulus C.nimbostratus D.cumulus E.cumulonimbus
59. Which of the following has served as a nucleating agent in cloud seeding? A.silver
iodide B.dry ice C.all of the above E.none of the above
60. Dew and frost A.is due primarily to nocturnal radiational cooling B.is due to the
surface emitting infrared radiation C.all of the above are true D.none of the
above is true
61. ? is created when humid, cold air deposits water vapor on vegetation as fern-like
crystals. A.virga B.frost C.hoarfrost D.dew E.graupel
62. In order to see a rainbow, A.you must be looking at a distant rain shower in front
of you B.you must have the sun at your back C.all of the above are true D.none
of the above is true
63. Colored rings about the shadow of an observers head that appear on a cloud
below the observer is a A.optical corona B.halo C.rainbow D.glory E.aurora
australis
64. A type of fog where warm, humid air moves over a chilled surface is termed
A.radiation fog B.advection fog C.steam fog D.upslope fog E.all of the above
65. Which of the following is not true concerning drizzle? A.0.2-0.5 mm water
droplets that drift slowly to surface B.from cumulus clouds C.associated with fog
D.all of the above are true E.none of the above is true
66. The dry adiabatic lapse rate A.varies with temperature and moisture content
B.may be as low as 3oC/1000 m for tropical air C.may be slightly less than wet
adiabatic rate for cold dry air D.all of the above are true E.none of the above is
true
67. Which of the following is not true concerning the distribution of evaporation?
A.greater over continents than over oceans B.changes with latitude C.directly
related to air temperature and relative humidity D.all of the above are true
E.none of the above is true
68. A device that uses electrical resistance to determine relative humidity is a
A.electrical hygrometer B.psychrometer C.all of the above D.none of the above
69. ? is due to refraction of sunlight through ice crystals; these features appear on
either side of the Sun. A.optical corona B.glory C.heiligenschein D.sun pillar
E.sun dog
70. Which of the following is not true concerning sleet? A.is also termed ice pellets
B.transparent/translucent ice less than 5 mm in diameter C.raindrops form in
atmosphere and fall into lower air with freezing temperature D.is usually due to an
upper air inversion E.all of the above are true concerning sleet
71. A middle cloud that is continuous and fairly thin is a A.cirrus B.cirrostratus
C.cirrocumulus D.altostratus E.altocumulus
72. Saturated air contains the ? amount of water vapor for a given temperature.
A.minimum B.maximum C.it depends upon the amount of saturation
73. Water is temporarily stored in the hydrologic cycle A.as groundwater B.in bodies
of water C. in glaciers D.in all of the above E.in none of the above
74. Which of the following is not true concerning relative humidity variation? A.varied
by adding moisture by evaporation or transpiration B.varied by changing the
temperature with cool air containing more moisture than warm air C.all of the
above are true D.none of the above is true
75. ? consists of water droplets formed by condensation at the surface. A.virga
B.frost C.hoarfrost D.dew E.graupel
76. A ring of light around the sun or moon due to refraction of sunlight by tiny ice
crystals suspended in the troposphere is a A.optical corona B.halo C.rainbow
D.glory E.aurora australis
77. Transpiration is the return of water vapor to the atmosphere by A.evaporation of
water, especially from oceans B.plants C.transpiration involves both water from
the ocean and plants
78. Which of the following is not true concerning orographic lifting? A.sloping terrain
act as barriers to flow of air and forces air to ascend B.air on windward side of
mountains has lost all moisture and creates a rain shadow desert on the windward
side C.all of the above are true D.none of the above are true
79. ? is where water vapor is deposited as ice crystals when the air temperature is less
than 0oC. A.hail B.sleet C.freezing rain D.frost E.all of these form where water
vapor is deposited as ice crystals when air temperature is less than 0oC
80. A high cloud in which a halo is present is a A.cirrus B.cirrostratus
C.cirrocumulus D.altostratus E.altocumulus
81. The mass of water vapor per unit mass of air defines ? humidity. A.specific
B.relative C.absolute D.this defines all of these humidity types
82. This is Test “A”. Please answer “A” for Question # 82.