1. What is the term used to describe the net inflow of air molecules into a regi

Question

1. What is the term used to describe the net inflow of air molecules into a region of the atmosphere with the result of increasing the surface pressure? a) jetstreak b) divergence c) convergence d) diabatic process

2. What term is used to describe the net­inward directed force found in symmetrically curved flow in the upper atmosphere? a) diabatic acceleration b) adiabatic acceleration c) centripetal acceleration d) centrifugal acceleration

3. Air flowing around a low­pressure center (located above the friction layer) will move ________ its geostrophic value. a) faster than b) slower than c) the same speed as d) in the opposite direction compared to

4. What does it mean if airflow in the Northern Hemisphere is cyclonic? a) Air is flowing clockwise b) Air is flowing counterclockwise c) Air is flowing at a variable speed parallel to isobars d) Air is flowing in a straight line parallel to straight isobars

5. The effect of changing flow curvature in the jetstream is to create ________ downstream of the ridge axis and ________ downstream of the trough axis. a) divergence divergence b) divergence convergence c) convergence divergence d) convergence convergence

6. What is the term used to describe a region of exceptionally strong winds found within the jetstream? a) jetstreak b) low­level jet c) polar jetstream d) minor jetstream

7. Strong divergence will result when the ________ of a jetstreak is co­located with the eastern branch of a ________ . a) left exit trough b) left exit ridge c) left entrance ridge d) left entrance trough

8. Which statement is not correct? a) Friction always reduces the wind speed. b) Friction leads to the strengthening of surface low­pressure centers. c) Friction leads to a deflection to the left of the geostrophic wind direction, toward the low­pressure side of isobars. d) Friction always acts to turn the wind such that the flow has a component from higher pressure toward lower pressure. e) Friction influences air flow in the lowest 1 to 3 km of the atmosphere.

9. Friction ________ surface wind speeds, ultimately leading to air spiraling ________ surface high­pressure centers. a) increases away from b) decreases toward c) increases toward d) decreases away from

10. Divergence aloft in the upper half of the troposphere is normally associated with which of the following? a) high­pressure development and divergence at the surface b) high­pressure development and convergence at the surface c) low­pressure development and divergence at the surface d) low­pressure development and convergence at the surface e) hot air during presidential elections

11. If only atmospheric _______ were occurring in an air column, the pressure at the base of the air column would always _______. a) divergence increase b) convergence decrease c) divergence decrease d) convergence remain constant e) divergence remain constant

12. What is the term used to describe processes that involve the transfer of heat energy. a) diabatic b) adiabatic c) divergent d) convergent e) anthropogenic

13. If an air column is heated more than the surrounding air, what will happen to the surface pressure at the base of the column? a) It will decrease. b) It will increase. c) It will remain the same.

14. Which of the following can enhance surface high­pressure systems? a) Convergence in the left entrance region of a jetstreak b) Convergence due to curvature in the jetstream. c) The cooling of the air in the vicinity of the high. d) (a) and (b) are both correct. e) (a), (b), and (c) are all correct.

15. Strong high­pressure systems develop where cooling occurs over broad areas such as: a) the Canadian Arctic during winter. b) the Asian Arctic during winter. c) the cold North Pacific Ocean in summer. d) the cold North Atlantic Ocean in summer. e) All of the above

16. The vertical direction of air flow in a ______________ is upward (rising). a) low­pressure system b) high­pressure system c) none of the above are correct.

17. Air descends toward the earth in the center of this type of pressure system. a) low­pressure system b) high­pressure system c) none of the above are correct.

18. Clear skies are often present with a ___________. a) low­pressure system b) high­pressure system c) none of the above are correct.

19. Precipitation is often present with ___________. a) low­pressure system b) high­pressure system c) none of the above are correct.

20. ____________ have do not have a uniform temperature across the system. a) low­pressure system b) high­pressure system c) none of the above are correct.

21. The typical central sea­level pressure value of this type of pressure system might be 1030 mb. This is a: a) low­pressure system b) high­pressure system c) none of the above are correct

Explanation / Answer

Here we are asked the definitions and hence just limit upto options.

1. C convergence

2. C centripetal acceleration

3. A slower than

4. B counterclockwise

5. C    convergence divergence

6.A Jet streak

9. B decreases , towards

10. C low­pressure development and convergence at the surface

17. Low pressure systems

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