气象1.docx

1、气象11_ causing strong winds and rough sea north west Bay of Biscay A. Strong low pressure B. Strong high pressure C. Steep pressure gradient D. Steep gradient pressure 2A boundary between two air masses is a(n) _. A. lapse rate B. isobar C. front D. continent 3A cloud sequence of cirrus，cirrostratus，

2、and altostratus clouds followed by rain usually signifies the approach of a(n) _. A. occluded front B. stationary front C. warm front D. cold front 4A cyclone in its final stage of development is called a(n) _. A. tornado B. anticyclone C. occluded cyclone or occluded front D. polar cyclone 5A front

3、al thunderstorm is caused by _. A. pronounced local heating B. wind being pushed up a mountain C. a warm air mass rising over a cold air mass D. an increased lapse rate caused by advection of warm surface air 6A generally circular low pressure area is called a(n) _. A. cyclone B. anticyclone C. cold

4、 front D. occluded front 7A line of clouds，sharp changes in wind direction，and squalls are most frequently associated with a(n) _. A. occluded front B. warm front C. cold front D. warm sector 8A sea breeze is a wind _. A. that blows towards the sea at night B. that blows towards an island during the

5、 day C. caused by cold air descending a coastal incline D. caused by the distant approach of a hurricane 9A series of brief showers accompanied by strong，shifting winds may occur along or some distance ahead of a(n) _. A. upper front aloft B. cyclone C. occluded front D. cold front 10A warm air mass

6、 is characterized by _. A. stability B. instability C. gusty winds D. good visibility 11An occluded front is caused by a(n) _. A. low pressure area B. high pressure area C. area of calm air D. cold front overtaking a warm front 12As a cold front passes an observer，pressure _. A. drops and winds beco

7、me variable B. rises and winds become gusty C. drops and winds become gusty D. rises and winds become variable 13Brief，violent showers frequently accompanied by thunder and lightning are usually associated with _. A. passage of a warm front B. passage of a cold front C. winds shifting counterclockwi

8、se in the Northern Hemisphere D. stationary high pressure systems 14Cyclones tend to move _. A. perpendicular to the isobars in their warm sectors B. parallel to the isobars in their warm sectors C. parallel to the line of the cold front D. perpendicular to the line of the cold front 15In the Northe

9、rn Hemisphere，an area of counterclockwise wind circulation surrounded by higher pressure is a _. A. low B. high C. warm front D. cold front 16In the Northern Hemisphere，gusty winds shifting clockwise，a rapid drop in temperature，thunderstorms or rain squalls in summer (frequent rain/snow squalls in w

10、inter) then a rise in pressure followed by clearing skies，indicate the passage of a(n) _ A. warm front B. tropical cyclone C. anticyclone D. cold front 17MODERATE WAVES，TAKING A MORE PRONOUNCED LONG FORM；MANY WHITE HORSES ARE FORMEDTHIS sea condition is likely to be termed _. A. moderate breeze B. f

11、resh breeze C. strong breeze D. near gale 18Pressure gradient is a measure of _. A. a high-pressure area B. pressure difference over horizontal distance C. pressure difference over time D. vertical pressure variation 19The atmosphere in the vicinity of a high pressure area is called a(n) _. A. antic

12、yclone B. cold front C. occluded front D. cyclone 20The greater the pressure difference between a high and a low pressure center，the _. A. dryer the air mass will be B. cooler the temperature will be C. greater the force of the wind will be D. warmer the temperature will be 21The legend/symbol which

13、 designates an occluded front is represented by a _. A. red line B. purple line C. blue line D. dashed blue line 22When winds of force reach 10-11 in Beaufort Scale，usually we call such winds as _. A. Hurricane B. Breeze C. Storm D. Gale 23_ LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM

14、FROM FM CEN TO 11N 171W A. SHLW B. SCTD C. OBS D. SW 24_ moving rather quickly east expected 150 miles south of Cape Farewell 972 by 160000 GMT A. Developed low B. Developing low C. Being developed low D. Low to be developed 25_ rain means it rains in some parts of the area A. Squally B. Isolated C.

15、 Scattered D. Occasional 26A cold front moving in from the northwest can produce _. A. thunderstorms，hail，and then rapid clearing B. increasing cloud cover lasting for several days C. lengthy wet weather D. low ceilings with thick cirrus clouds 27A line on a weather chart connecting places which hav

16、e the same barometric pressure is called an _. A. isotherm B. isallobar C. isobar D. isotope 28A local wind which occurs during the daytime and is caused by the different rates of warming of land and water is a _. A. foehn B. chinook C. land breeze D. sea breeze 29A millibar is a unit of _. A. humid

17、ity B. precipitation C. pressure D. temperature 30A sea breeze is a wind _. A. that blows towards the sea at night B. that blows towards an island during the day C. caused by cold air descending a coastal incline D. caused by the distant approach of a hurricane 31A weather forecast states that the w

18、ind will commence backing. In the Northern Hemisphere，this would indicate that it will _. A. shift in a clockwise manner B. shift in a counterclockwise manner C. continue blowing from the same direction D. decrease in velocity 32A weather map is a synoptic data because it _. A. summarizes a great de

19、al of information B. can be interpreted accurately C. appears daily D. is prepared by the Weather Bureau 33A WIND BLOWS ROUND ANTICLOCKWISE defines _. A. Backing (of wind) B. Beach (to) C. Veering (of wind) D. Maintaining direction of the wind 34After a cold front passes the barometric pressure usua

20、lly _. A. fluctuates B. remains the same C. remains the same，with clouds forming rapidly D. rises，often quite rapidly，with clearing skies 35After a cold front passes，the barometric pressure _. A. drops，and the temperature drops B. drops，and the temperature rises C. rises，and the temperature drops D.

21、 rises，and the temperature rises 36An air mass is termed warm if _. A. it is above 70F B. the ground over which it moves is cooler than the air C. it originated in a high pressure area D. it originated in a low pressure area 37An occluded front on a weather map is colored _. A. blue line B. purple l

22、ine C. dashed blue line D. alternate red and blue line 38Anticyclones are usually characterized by _. A. dry，fair weather B. high winds and cloudiness C. gustiness and continuous precipitation D. overcast skies 39As the temperature for a given mass of air increases，the _. A. dew point increases B. d

23、ew point decreases C. relative humidity increases D. relative humidity decreases 40BASHI：E TO SE 9-10500M IN HVY SQUALLY SHWRS AND TSSEA 8-9MSWELL SE 6-7MFrom the above forecast，the wind in Beaufort Scale will be _. A. STRONG GALE TO STORM B. GALE TO STRONG GALE C. NEAR GALE TO GALE D. STRONG BREEZE

24、 TO NEAR GALE 41CAPE WEST WIND WEST TO SOUTHWEST 15 TO 20 KNOTS WEATHER SHOWERSThis description is likely to be under the heading of _. A. FORECAST B. STORM WARNING C. GENERAL SITUATION D. MAP ANALYSIS 42During the voyage my ship _ bad weather in the Pacific Ocean A. meets with B. has met with C. me

25、t with D. meeted with 43Fleet weather forecast messages are the expected conditions in _. A. a certain area B. all ocean areas C. some areas D. important areas 44Gale warnings are usually issued when winds of _ 8-9 are expected A. wind Speed B. Air Force C. wind Velocity D. Beaufort Force 45HIGH WAV

26、ES；DENSE STREAKS OF FOAM ALONG THE DIRECTION OF THE WIND；CRESTS OF WAVES BEGIN TO TOPPLE，TUMBLE AND ROLL OVER；SPRAY MAY AFFECT VISIBILITYThis condition is likely to be termed _. A. strong breeze B. near gale C. gale D. strong gale 46In Beaufort Scale，the wind force 7 with speed of 28-33 knots is def

27、ined as _. A. Moderate gale B. Near gale C. Strong gale D. Whole gale 47INTERTROPICAL CONVERGENCE ZONE OVER SOUTH PHILIPPINE PASSING OVER MINDANAO NORTHERN SULU AND PALAWANThis paragraph is likely to be under the heading of _. A. GALE WARNING B. 24 HOURS FORECAST C. SYNOPSIS D. STORM WARNING 48Of th

28、e following，_ is not a wind A. bora B. gust C. gregale D. floe 49When a wind blows round clockwise，it is _. A. Variable B. Changing C. Backing D. Veering 50Isobars on a synoptic chart are useful in predicting _. A. temperature B. dew point C. wind velocity D. relative humidity 51_ causing strong win

29、ds and rough sea north west Bay of Biscay A. Strong low pressure B. Strong high pressure C. Steep pressure gradient D. Steep gradient pressure 52A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT _. A. higher than normal swells B.

30、high winds C. winds veering from south，through west，to northwest D. light showers 53A steep barometric gradient indicates _. A. calms B. light winds C. strong winds D. precipitation 54A storm is forecast for the area where your vessel is moored. For its safety you should put _. A. more slack in the mooring lines B. a