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CDC set1
Wx
70
Science
Professional
04/27/2015

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Cards

Term
1. (001) How many degrees centigrade does the temperature decrease per 1,000 meters of altitude in the troposphere?
Definition
D. 6.5
Term
2. (001) The stratosphere is characterized by
Definition
D. a temperature that remains isothermal to about 100,000 feet, the strongest concentration of ozone, and excellent flying conditions.
Term
3. (002) Above 13 miles, the radiation from the sun breaks down the oxygen in the atmosphere into
Definition
A. ozone gas.
Term
4. (002) Which statement best describes water vapor in the atmosphere?
Definition
C. The more water vapor, the lighter the air will be.
Term
5. (003) The two atmospheric gases most responsible for the absorption of incoming solar radiation are
Definition
A. oxygen and ozone.
Term
6. (004) The driving mechanism that is mainly responsible for the earth’s large-scale atmospheric circulations is the
Definition
A. unequal heating of the earth.
Term
7. (005) Which force is described as any center-seeking force
Definition
D. Centripetal.
Term
8. (005) Which force is the “equal and opposite reaction” to the center-seeking force?
Definition
C. Centrifugal
Term
9. (005) Centrifugal force (CeF) will increase when there is a decrease in
Definition
D. the radius of rotation.
Term
10. (005) Coriolis force (CoF) is created by
Definition
A. the cyclonic rotation of the earth.
Term
11. (005) If you throw a ball towards a stationary target from the window of a speeding vehicle, coriolis force (CoF) will cause the ball to miss the target
Definition
A. to the right.
Term
12. (006) The force what is responsible for starting the horizontal movement of air over earth’s surface is
Definition
D. pressure gradient.
Term
13. (006) The balance of forces needed for gradient cyclonic circulation is pressure gradient
Definition
C. balanced against coriolis and centrifugal forces.
Term
14. (007) The areas of low pressure that correspond to the belt of low pressure at 60 ̊ N created by the 3-cell circulation are the
Definition
B. Icelandic and Aleutian lows.
Term
15. (008) In relation to the jet core, the greatest vertical wind shear is usually located
Definition
C. above the jet core.
Term
16. (008) In relation to the jet core, the greatest horizontal wind shear is usually located
Definition
B. north of the jet core.
Term
17. (009) The simplest method for locating the 500 millibar frontal zone is to
Definition
C. locate the position of the -17 ̊ Centigrade isotherm.
Term
18. (009) The width of the jet stream core is approximately equal to the
Definition
A. width of the 500 millibar isotherm ribbon.
Term
19. (010) Where are the greatest velocities located in relation to the subtropical jet (SJT)?
Definition
B. In the region of confluence of the STJ and PFJ.
Term
20. (011) “Jet fingers”
Definition
B. suggest that the jet stream is beginning to dissipate.
Term
21. (011) Converging contours downstream of the jet stream will cause the jet to
Definition
C. deflect toward lower heights.
Term
22. (012) Using average surface frontal slopes, how far ahead of the surface warm front is the jet stream located?
Definition
D. 600 miles.
Term
23. (013) Which heat transfer process involves the transfer of energy by molecular motion from hot to cold objects?
Definition
D. Conduction.
Term
24. (013) Advection transfers temperature
Definition
B. horizontally by the wind.
Term
25. (014) What factors must a region possess in order to facilitate air mass formation?
Definition
A. Uniform surface, stagnant air, and large-scale diffluent flow.
Term
26. (014) Which process is most responsible for the slow formation of air masses in the polar region?
Definition
A. Loss of heat by radiation.
Term
27. (015) Air mass stability characteristics often depend on the temperature difference between the
Definition
C. air mass and the surface over which it is traveling.
Term
28. (015) How would you classify a stable air mass that formed over land in the Arctic has now moved over the ocean’s warmer surface?
Definition
D. cAks.
Term
29. (015) What air mass classification signifies an unstable, maritime tropical air mass that is colder than the surface it is moving over?
Definition
C. mTku.
Term
30. (015) What air mass classification signifies a stable, continental polar air mass that is warmer than the surface it is moving over?
Definition
B. cPws.
Term
31. (015) What air mass forms over land only during the summer?
Definition
D. cT.
Term
32. (016) As an air mass is heated from below, there will be increased
Definition
D. instability and an increased lapse rate.
Term
33. (016) It is winter. A cPk air mass is moving over the Great Lakes. In this situation, the southern shores of the Great Lakes will experience
Definition
B. heavy snow.
Term
34. (016) Which air mass involves most of the wintertime storms for the North American Pacific coast?
Definition
C. mT.
Term
35. (017) Continental tropical air masses are usually associated with
Definition
A. thermal lows.
Term
36. (017) The rate that an air mass modifies depends on the
Definition
D. temperature differences between the new surface and the air mass, the nature of the surface over which it moves, and the speed with which the air mass travels.
Term
37. (017) The weather characteristics of a particular month in a given locality are governed by
Definition
D. effects of local topography and proximity to a zone of convergence.
Term
38. (018) Surface pressure changes are largely controlled by
Definition
A. mass changes in the upper troposphere.
Term
39. (018) Horizontal divergence within an air mass will
Definition
D. vertically contract the original column of air and then expand it horizontally.
Term
40. (018) As air converges at the surface and toward the center of a layer, there will be horizontal
Definition
B. contraction and vertical expansion.
Term
41. (018) An increase of mass in a column of air will cause the surface pressure to
Definition
A. increase.
Term
42. (019) In the chimney effect, the maximum upward vertical wind motion will be located
Definition
D. at the level of non divergence (LND).
Term
43. (019) The primary cause of surface pressure changes for a dynamic low is net
Definition
A. divergence aloft.
Term
44. (019) The damper effect is comprised of upper-level
Definition
D. convergence and surface high pressure.
Term
45. (020) A low-pressure system undergoing cyclogenesis is said to be
Definition
B. forming or deepening.
Term
46. (020) When the central pressure of an anticyclone is rising, you can infer the anticyclone is
Definition
B. building.
Term
47. (020) A high-pressure system undergoes anticyclolysis when the clockwise circulation area
Definition
A. decreases or disappears.
Term
48. (020) An unstable wave cyclone is one where the amplitude
Definition
D. increases with time and the wave deepens.
Term
49. (020) After warm air with an unstable wave is pushed aloft and cuts off from a cyclone, the cyclone will become
Definition
D. barotropic and begin to fill.
Term
50. (021) Unstable waves are classified as
Definition
D. baroclinic lows.
Term
51. (021) In the baroclinic instability process,
Definition
B. potential energy is transferred to the major short wave by thermal advection.
Term
52. (021) When using Petterssen’s rule, the factors needed for cyclogenesis are upper-level
Definition
C. divergence and a frontal zone where thermal advection is weak.
Term
53. (021) What causes the surface low to deepen during the self-development process?
Definition
A. Divergence aloft.
Term
54. (021) A low dissipates after proceeding through its entire life cycle which ranges from the
Definition
C. bottom up as boundary layer convergence adds mass to the column of air.
Term
55. (021) How many stages are there in the life cycle of a low?
Definition
D. Five.
Term
56. (021) In the life cycle of a low, the system will evolve into a cold barotropic low in the
Definition
B. dissipation stage.
Term
57. (022) Anticyclongenesis typically occurs at, and just downstream from, long-wave
Definition
C. ridges under confluent flow aloft.
Term
58. (022) What causes a surface high to build during the self-development process?
Definition
C. Convergence aloft.
Term
59. (022) Which is primarily responsible for low-level divergence acting as a braking mechanism for a high?
Definition
A. Friction.
Term
60. (023) A warm barotropic high is a type of pressure system that
Definition
B. has great vertical extent and is usually found over water areas.
Term
61. (023) In regards to types of pressure systems, a heat low is a
Definition
D. warm barotropic low that forms during the summer.
Term
62. (024) With the passage of a cold front in the Northern Hemisphere, the horizontal wind direction will
Definition
C. shift in a clockwise direction.
Term
63. (024) The cold conveyor belt originates in the low levels that are located
Definition
B. east of a low center and flow westward.
Term
64. (025) The average slope of a cold front is
Definition
A. 1/30 to 1/100.
Term
65. (025) A warm frontal occlusion occurs when the cool air
Definition
C. behind the cold front overrides the colder air ahead of the warm front.
Term
66. (025) In comparison to an active cold front, an inactive cold front is characterized by a relatively
Definition
C. steeper slope, a narrow weather pattern, and is called katafront.
Term
67. (025) When an inactive front passes your station, the dew points will
Definition
B. decrease sharply with the passage.
Term
68. (025) When only high and middle clouds are associated with a warm front, the
Definition
C. overrunning warm air is dry.
Term
69. (025) In a cold occlusion, the coldest air is found
Definition
A. behind the cold front.
Term
70. (025) In a cold occlusion, which type of front, if any, is found aloft?
Definition
B. The warm front.
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