Weather Review

Click on a selection to see if you are correct.

1. Which of the following processes will result when air temperature reaches dew point?

A. radiation B. conduction C. evaporation D. condensation Explanation

2. On the map above, the difference in average July temperatures is the result of

A. aspect. B. latitude. C. altitude. D. prevailing winds. Explanation

3. What causes the deflection of global winds?

A. surface albedo B. local topography C. high pressure belts D. the earth’s rotation

Explanation

“…mix one large ocean having a surface temperature above 27° C with one small low pressure system. Allow to simmer gently over the ocean for about four days, gathering energy and moisture and sending towering cumulonimbus clouds into the sky. Stir the storm vigorously…”

4. The passage above describes a

A. tornado. B. anticyclone. C. katabatic wind. D. tropical cyclone. Explanation

5. The wind direction at location R on the weather map above is from the

A. northeast. B. northwest. C. southeast. D. southwest. Explanation

6. The type of air mass over location T on the weather map above is

A. maritime polar. B. continental polar. C. maritime tropical. D. continental tropical. Explanation

7. To which location of the weather map does the forecast above apply?

A. R B. S C. T D. U Explanation

8. What is the cause of the concentration of pollutants in the diagram above?

A. an urban heat island B. air mass convergence C. the effect of local topography D. air-borne pollution from other areas Explanation

9. The atmospheric layer in which industrial activity has the greatest impact is the

A. exosphere. B. ionosphere. C. troposphere. D. thermosphere. Explanation

10. The difference in average January temperature between Bergen and St. John’s can be best explained by the effect of

A. latitude. B. elevation. C. ocean currents. D. proximity to water. Explanation

11. The winds represented by X on the diagram above are the

A. doldrums. B. trade winds. C. polar easterlies. D. prevailing westerlies. Explanation

12. The wind direction at the station model above is from the

A. northeast. B. northwest. C. southeast. D. southwest. Explanation

13. The temperature at the station model above is

A. 1° C B. 7° C C. 17° C D. 18° C Explanation

14. Air pressure at the station model above is

A. 99.88 kPa B. 109.88 kPa C. 998.0 kPa D. 998.8 kPa Explanation

15. Weather phenomena such as mid-latitude cyclones are features of the

A. troposphere. B. mesosphere. C. stratosphere. D. thermosphere. Explanation

16. The diagram above illustrates how air pollution increases under the influence of a

A. high albedo. B. valley breeze. C. chinook wind. D. temperature inversion. Explanation

17. The prevailing winds that blow from the northeast between the Tropic of Cancer and the Equator are called the

A. Trades. B. Easterlies. C. Doldrums. D. Westerlies. Explanation

18. The shaded area marked X on the weather map represents a(n)

A. air mass occlusion. B. area of precipitation. C. region of high pressure. D. continental arctic air mass. Explanation

19. The pressure reading at the line marked Y on the weather map is

A. 1 016 mb. B. 1 020 mb. C. 1 024 mb. D. 1 066 mb. Explanation

20. The dew point at the Trout Lake station (below where it says "CONTINENTAL ARCTIC") is

A. -6° C B. -4° C C. 7° C D. 13° C Explanation

21. The type of cloud illustrated at X in the photograph is

A. cirrus. B. altostratus. C. stratocumulus. D. cumulonimbus. Explanation

22. The process by which water vapour formed the clouds in the photograph is

A. evaporation. B. precipitation. C. transpiration. D. condensation. Explanation

23. What climatic control is responsible for the temperature differences of the three cities shown on the map above?

A. aspect B. altitude C. latitude D. maritimity Explanation

24. The local wind illustrated in the diagram above is a

A. chinook. B. sea breeze. C. land breeze. D. katabatic wind. Explanation

25. Which location would record the lowest air pressure? A. W B. X C. Y D. Z
Explanation

26. Clear skies and the coldest temperature would occur at which location?

A. W B. X C. Y D. Z

"Towering cumulonimbus clouds and heavy showers have resulted in the cancellation of this afternoon’s baseball game."

27. Which location would be associated with the statement above?

A. W B. X C. Y D. Z

28. Differences in the ranges of temperatures in the locations above are due to

A. aspect. B. latitude. C. continentality. D. mountain barriers.

29. The cloud in the photograph would most likely produce

A. heavy, short-lived showers.
B. light showers lasting several hours.
C. a steady rainfall lasting a couple of days.
D. intermittent showers.

30. At weather station R on the map, the wind is from the

A. east. B. west. C. north. D. south.

31. According to information on the map, the warmest air temperature would be at location

A. R. B. S. C. T. D. U.

32. The conditions at weather station X indicated in the diagram would be found at map location

A. R. B. S. C. T. D. U.

33. The air temperature on October 27 was

A. 3° C. B. 4°C. C. 7° C. D. 10°C.

34. Vancouver was under the direct influence of a passing warm front on

A. October 27. B. October 28. C. October 29. D. October 30.

35. On October 28, the dew point was reached when the air temperature

A. increased by 6°C.
B. decreased by 5° C.
C. increased by 9° C.
D. decreased by 4°C.