University Of Arizona

ATMO 170A

QUIZ 2

1)An increase in the________a parcel of air will not cause the pressure to rise.

 

2. Squall lines most often form ahead of a

 

3. The greatest contrast in both temperature and moisture will occur along the boundary separating which air masses?

 

4. Which of the following correctly expresses the gas law relationship between pressure P, density d, and temperature T, in a parcel of air (R is a constant)?
5. A good source region for an air mass would be

 

6. Winds blow parallel to the contour lines

 

7. To obtain the sea-level-pressure for a land station, you must make a major adjustment to account for

 

8. A developing wave cyclone in the above figure would most likely be found below which number?

 

 

9. Warm air aloft is associated with___________ than normal heights on an isobar

chart, and it is associated with___________ than normal pressures on a constant

elevation chart.

 

10. The unit of pressure most commonly found on a surface weather map is

 

11. Surface winds blow across the isobars at an angle due to
12. What type of weather front would be responsible for the following weather forecast: "Increasing high cloudiness and cold this morning. Clouds increasing and lowering this afternoon with a chance of snow or rain tonight. Precipitation ending tomorrow morning. Turning much warmer. Winds light easterly today becoming southeasterly tonight and southwesterly tomorrow."

 

13. An object is falling at constant speed. The net force is

 

14. The rate of the earth's rotation determines the strength of the

 

15. The origin of most cP air masses that enter the United States is

 

16. On an upper-level chart, normally we find warm air associated with ____

pressure and cold air associated with____________ pressure.

 

17. The winds aloft in the middle latitudes would not blow from the west if

 

18. Which region is not considered to be a region where cyclogenesis often occurs

 

19. When a deep upper-level trough is located to the east of a surface anticyclone, the surface anticyclone will tend to move toward the

 

20. The pressure gradient force is directed from higher pressure toward lower pressure

 

21. Suppose that the winds aloft in the Northern Hemisphere are geostropic and blowing from the south. Low pressure would be located to the

 

22. What type of air mass would be responsible for hot, dry summer weather in southern Arizona?

 

23. We can generally expect the air to be____________ above areas of surface low

pressure and________ above areas of surface high pressure.

 

24. The designation for a cool, moist air mass is

 

25. The diagram represents a side view of a_____________ occluded front with the coldest

air located at position________ _.

 

26. Frontal waves which grow into large middle latitude storms generally develop and dissipate over a period of several_______________________________ _ .

 

27. When upper-level divergence of air above a surface low pressure area is stronger than the convergence of surface air, the surface pressure will ____

and the storm itself will________ _ .

 

28.A building anticyclone means

 

29.On a 500 millibar chart,___________ are drawn to represent horizontal changes in

altitude which correspond to horizontal changes in pressure.

 

30.A cold front is positioned between points

 

31. What is the direction of the pressure gradient force at point A in the above figure?

 

32. When two air masses collide at a front, one air mass is pushed upward by the other. This is because ____

 

33. In Houston, Texas, pressure is measured to be 1020 mb, and temperature is measured to be 300 K. What is the density of the air in kg/m³ at this moment? Give your answer to the nearest tenth of a kg/m³ (one decimal point).