《11規(guī)則》題庫第三章航海氣象測(cè)試題

1、11規(guī)則題庫第三章航海氣象測(cè)試題基本信息：矩陣文本題 *姓名：_學(xué)號(hào)：_1. After a cold front passes，the barometric pressure _. 單選題 *Drops，and the temperature dropsDrops，and the temperature risesRises，and the temperature drops(正確答案)Rises，and the temperature rises2. Which of the following fogs can last long? 單選題 *advection(正確答案)radiati

2、onadvection-radiationother fog3. AT 221200UTC, _ 60 NORTH 25WEST 969 EXPECTED 70 NORTH02 EAST 958 BY 231200UTC 單選題 *HIGHLOW(正確答案)COLD FRONTWARM FRONT4. An air mass is termed warm if _. 單選題 *70Fpassing over ground colder air(正確答案)high pressure and low pressurelow pressure5. _ is a type of fog occurri

3、ng close to the sea surface when the air is dry and cold-probably at least 9 below the sea surface temperature. 單選題 *MIXING FOGADVECTION FOGRADIATION FOGARCTIC SEA SMOKE(正確答案)6. Neap tides occur _. 單選題 *At the start of spring，when the Sun is nearly over the equatorOnly when the Sun and Moon are on t

4、he same sides of the Earth and are nearly in lineWhen the Sun and Moon are at approximately 90，as seen from the Earth(正確答案)When the Sun，Moon，and Earth are nearly in line，regardless of alignment order7. As the tide makes the water _ twice a day a resulting current, or tidal stream, is generated. 單選題

5、*rising and fallingRose and fellthe rise and fallrise and fall(正確答案)8. Clouds appearing in the following order: cirrus, cirrostratus, altostratus, stratus, and nimbostratus usually indicate the approach of a(n) _. 單選題 *warm front(正確答案)occluded frontmedium frontcold front9. Cumulonimbus clouds are mo

6、st likely to accompany a(n) _.單選題 *high pressure systemcold front(正確答案)warm frontoccluded front10. When visibility is reduced to about 5 miles，we say that visibility is _.單選題 *very goodgoodpoormoderate(正確答案)11. What occurs when rising air cools to the dew point? 單選題 *Advection fog formsHumidity decr

7、easesWinds increaseClouds form(正確答案)12. In the North Hemisphere northerly wind causes _temperature. 單選題 *falling(正確答案)risingsameconstant13. The winds you would expect to encounter in the North Atlantic between latitude 5 and 30 are known as the_.單選題 *doldrumswesterliestrades(正確答案)easterlies14. The t

8、emperature at which the air is saturated with water vapor and below which condensation of water vapor will occur is referred to as the_ .單選題 *precipitation pointvapor pointdew point(正確答案)absolute humidity15. The dense black cumulonimbus clouds surrounding the eye of a hurricane are called .單選題 *spir

9、al rainbandscloud walls(正確答案)funnel cloudscyclonic spirals16. _ are mainly caused by the gravitational pull of the moon. 單選題 *Tides(正確答案)SeaSwellWind17. _ refers to the amount of water vapor in the air.單選題 *Humidity(正確答案)TemperaturePrecipitationWind18. A katabatic wind blows _. 單選題 *up an incline du

10、e to surface heatingin a circular patterndown an incline due to cooling of the air(正確答案)horizontally between a high and a low pressure area19. INTERTROPICAL CONVERGENCE ZONE OVER SOUTH PHILIPPINE PASSING OVER MINDANAO NORTHERN SULU AND PALAWAN. This paragraph is likely to be under the heading of .單選

11、題 *GALE WARNING24 HOURS FORECASTSYNOPSIS(正確答案)STORM WARNING20. Anticyclones are usually characterized by _. 單選題 *dry，fair weather(正確答案)high winds and cloudinessgustiness and continuous precipitationovercast skies21. _ moving rather quickly east expected 150 miles south of Cape Farewell 972 by 160000

12、 GMT 單選題 *Developed lowDeveloping low(正確答案)Being developed lowLow to be developed22. A tsunami is caused by a/an .單選題 *tidal wavestorm surge caused by a hurricane or tropical stormearthquake on the oceans floor(正確答案)tornado23. That half of the hurricane to the right hand side of its track (as you fa

13、ce the same direction that the storm is moving) in the Northern Hemisphere is called the _.單選題 *windward sideleeward sidesafe semicircledangerous semicircle(正確答案)24. Radiation fog is more common encountered in_.單選題 *springlater winterautumn(正確答案)end of summer25. The Benguela Current flows in a _. 單選

14、題 *SWly direction along the NW coast of AfricaSly direction off the East Coast of AustraliaNWly direction along the SW coast of Africa(正確答案)SWly direction along the SE coast of Greenland26. A cyclone in its final stage of development is called a（n）_.單選題 *TornadoAnticycloneOccluded cyclone or occlude

15、d front(正確答案)Polar cyclone27. On a weather map, a large letter “H” means_. 單選題 *a high pressure area with cool, dry air, and fair weather(正確答案)a high pressure area with warm, moist air, and inclement weatherhorse latitudes , with rough seas and strong windsa heavy squall line near the “H”28. In the

16、Southern Hemisphere winds in a low pressure system rotate in a _. 單選題 *clockwise direction(正確答案)northeasterly directionnortherly directioncounterclockwise direction29. The passing of a low pressure system can be determined by periodically checking the _. 單選題 *thermometerhygrometerbarometer(正確答案)anem

17、ometer30. A frontal thunderstorm is caused by .單選題 *pronounced local heatingwind being pushed up a mountaina warm air mass rising over a cold air mass(正確答案)an increased lapse rate caused by advection of warm surface air31. On the pole side of trade wind belt, there is an area of high pressure with w

18、eak pressure gradients and light, variable winds. This area is called the _.單選題 *prevailing westerliesgeostrophic windsdoldrumshorse latitudes(正確答案)32. In the doldrums you can expect_. 單選題 *steady, constant windsfrequent rain showers and thunderstorms(正確答案)steep pressure gradientslow relative humidi

19、ty33. The speed at which a storm centre moves is the _. 單選題 *speed of movementspeed of advance(正確答案)speed of stormstorm movement speed34. What is the distance from the bottom of a wave trough to the top of a wave crest? 單選題 *Wave lengthWave height(正確答案)Wave breadthWave depth35. A _ is created kri:et

20、d by a pressure gradient or slope in the water level. 單選題 *gradient current(正確答案)density currentswift currenttorrent current36. Fog is likely to occur when there is little difference between the dew point and the _ .單選題 *relative humidityair temperature(正確答案)barometric pressureabsolute humidity37. W

21、hat is the tidal height? 單選題 *Twice the tide amplitudeThe range of the tideThe water above the Lowest Astronomical Tide(正確答案)The height above or under the mean level38. _ FORCE 12 WINDS EXPECTED IN EAST NORTHERN SECTION AND WEST NORTHER SECTION. 單選題 *MODETATEGALESTORMHURRICANE(正確答案)39. On the approa

22、ch of a warm front the barometric pressure usually _. 單選題 *falls(正確答案)risesis steadyis unreliable40. The two most effective generating forces of surface ocean currents are _. 單選題 *temperature and salinity differences in the water(正確答案)wind and density differences in the waterwater depth and underwat

23、er topographyrotation of the Earth and continental interference41. What kind of condition would you observe as the eye of a storm passes over your ships position? 單選題 *Huge waves approaching all directions, clearing skies, light winds, and an extremely low barometer.(正確答案)Flat calm seas, heavy rain,

24、 light winds, and an extremely low barometer.Flat calm seas, heavy rain, light winds, and high pressure.Huge waves approaching from all directions, clearing skies, light winds, and high pressure.42. In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causin

25、g the wind is located to your _. 單選題 *NNWWSWESE(正確答案)SSW43. There are often three parts in a weather report, not including _單選題 *warninggeneral synopsisforecasttraffic density(正確答案)44. Clouds are classified according to their _. 單選題 *sizemoisture contentaltitude and how they were formed(正確答案)locatio

26、n in a front45. _ LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM FROM FM CEN TO 11N 171W. 單選題 *SHLW(正確答案)SCTDOBSSW46. The movement of water away from the shore or downstream is called a（n）_. 單選題 *reversing currentebb current(正確答案)flood currentslack current47. Which of the following is not

27、 a form of precipitation？ 單選題 *RainFrost(正確答案)SleetSnow48. High pressure ridge _ from Sevastopol to eastern Libya. 單選題 *reachingextending(正確答案)increasingupgrading49. According to Buys Ballots law，when an observer in the Northern Hemisphere experiences a northwest wind，the center of low pressure is l

28、ocated to the _. 單選題 *northeast(正確答案)west-southwestnorthwestsouth-southeast50. How much time can be saved by use of weather routeing? 單選題 *2%4%6%Impossible to say(正確答案)51. In many areas atoll clouds (clouds of vertical development) are produced over small islands. These are the result of _.單選題 *risi

29、ng air currents produced by the warm islands(正確答案)warm air from the sea rising over higher land areascool land air mixing with warm sea airdescending air over the islands52. Especially in adverse weather，risk of collision with an offshore supply vessel increases when the vessel is moored to what sid

30、e of the unit? 單選題 *Upwind(正確答案)DownwindCrosswindDowncurrent53. The set of the current is the _. 單選題 *speed of the current at a particular timemaximum speed of the currentdirection from which the current flowsdirection in which the current flows(正確答案)54. A hygrometer is a device used for determining

31、 _.單選題 *the absolute temperatureatmospheric pressurewind velocityrelative humidity(正確答案)55. Mainly east 3 or 4 partly cloudy to overcast occasional rain _ slowly south moderate or good. 單選題 *spreading(正確答案)proceedingbounding forgoing to56. What danger is presented if a waterspout passes over the shi

32、p? 單選題 *Heavy rain could cause down floodingVisibility could restricted by low cloudsLarge wave could cause structural damage(正確答案)Personnel maybe injured by deck gear blown by the wind57. The tropical cyclone at 15.8N, 132.4E has yesterday afternoon_ into a tropical storm with max winds 70 knots ne

33、ar center.單選題 *upgraded(正確答案)decreasedbecomechanged58. An isotherm is . 單選題 *a line on a weather map connecting equal points of both temperature and pressurean instrument that measures the climatological effects of temperaturea line connecting points of equal barometric pressure on a weather mapa li

34、ne connecting points of equal temperature on a weather map(正確答案)59. The period at high or low water during which there is no apparent change of level is called _. 單選題 *HEIGHTRANGESTAND(正確答案)FALL60. Cyclones that have warm sectors usually move _. 單選題 *westerlyparallel to the isobars in the warm secto

35、r(正確答案)toward the nearest high pressure areafaster than the accompanying cold front61. In the Northern Hemisphere, winds backing sharply from northwest to the west with increasing speed are indications that a_.單選題 *low pressure center is approaching(正確答案)cold front has passedstationary front existsh

36、igh pressure center has passed62. Monsoons are characterized by_.單選題 *light, variable winds with little or no humiditystrong, gusty winds that blow from the same general direction all yearsteady winds that reverse direction semiannually(正確答案)strong, cyclonic winds that change direction to conform to

37、 the passage of an extreme low pressure system63. During the winter months，the southeast trade winds are _.單選題 *stronger than during the summer months(正確答案)weaker than during the summer monthsdrier than during the summer monthswetter than during the summer months64. The set of the ocean current is c

38、aused by _. 單選題 *density differences of the waterrotation of the earthdirection of primary circulation of airAll of the above(正確答案)65. REEF（SOUTH）WIND NORTH 10 KNOTS WEATHER ISOLATED SHOWERS SEA SLIGHT STOP. This phase is a _. 單選題 *Forecast(正確答案)Warningmap analysisgeneral introduction66. _ is a high

39、 layer of cloud in the form of small flakes or cauliflower, white in colour with no dark shadows in between.單選題 *CirrostratusCirrusCirrocumulus(正確答案)Alto-stratus67. Two well-developed high pressure areas may be separated by a _單選題 *hill of low pressuretrough of low pressure(正確答案)valley of low pressu

40、reridge of low pressure68. A boundary between two air masses is a(n)_. 單選題 *lapse rateisobarfront(正確答案)Continent69. If the current and wind are in opposite directions, the sea surface represents _.單選題 *a greatly reduced wind speeda higher wind speed than that really exists(正確答案)a lower wind speed th

41、an what really existsdisturbant wind70. Fog is simply a cloud of minite water droplets that exists at _.單選題 *sea surfaceland surfacealoftground level(正確答案)71. If a hurricane several hundred miles away is moving in your general direction your barometer would _. 單選題 *start to rise rapidlystart to fall

42、 gradually(正確答案)rise slowly, begin pumping and then start a slow, steady fallremain steady72. In most cases , the direction of the apparent wind lies between the bow and_.單選題 *the direction of the true wind(正確答案)true norththe beam on the windward sidethe beam on the lee side73. Radio weather service

43、 is in which volume of Admiralty List of Radio Signals? 單選題 *23(正確答案)5674. The fog most commonly encountered at sea is called . 單選題 *conduction fogradiation fogfrontal fogadvection fog(正確答案)75. During the voyage she encountered boisterous winds and heavy weather during which time the vessel _ heavil

44、y and to such an extent that at times it was necessary to change course. 單選題 *movedlabored(正確答案)drovewent76. _ maybe a warning for an approaching storm.單選題 *The presence of cirrus(正確答案)The low-hanging stratus cloudsThe altocumulus cloudsThe massive cumulus clouds77. Tides are superimposed on non-tid

45、al rising and falling water levels，caused by _. 單選題 *freshetsfloodsriver flowsseismic events(正確答案)78. A microbarograph is a precision instrument that provides a _. 單選題 *charted record of atmospheric temperature over timecharted record of atmospheric pressure over time(正確答案)graphic record of combusti

46、ble gases measured in an atmospheregraphic record of vapor pressure from a flammable/combustible liquid79. A wave entering _ is likely to produce bores. 單選題 *shallow water(正確答案)deep waterrivertide80. You can expect frontal activity when two air masses collide and _單選題 *their barometric pressure as a

47、n temperatures are the samethere are difference in how track along the jet streamthere are no significant differences between their temperature and moisture contentthere are significant differences between the temperature of each air mass(正確答案)81. When a hurricane passes over colder water or land an

48、d loses its tropical characteristics, the storm becomes a(n) _.單選題 *high pressure areaextra-tropical low-pressure system(正確答案)tropical stormeasterly wave82. A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT .單選題 *higher than norma

49、l swellshigh windswinds veering from south, through west, to northwestlight showers(正確答案)83. Windward means _.單選題 *direction to winddirection against wind(正確答案)wind directionvariable direction84. Weather forecast messages are usually _.單選題 *given only to TV stationstransmitted only by commercial bro

50、adcast stationsbroadcast in plain language(正確答案)broadcast immediately on VHF Channel 16 and 2182 KHz85. TYPHOON FORECAST MOVE 285 DEG 15 KNOT FIRST 12 HOURS THEN 280 DEG 17 KNOT NEXT 12 HOURS. The movement of the typhoon is in_quadrant.單選題 *NESENW(正確答案)SW86. Haze is not caused by _. 單選題 *forest fire

51、ssmoke from industrial areasdust or sand stormswater droplets with the relative humidity more than 95%(正確答案)87. A tide is called diurnal when _. 單選題 *only one high and one low water occur during a lunar day(正確答案)the high tide is higher and the low tide is lower than usualthe high tide and low tide a

52、re exactly six hours aparttwo high tides occur during a lunar day88. What is the direction of rotation of tropical cyclone, tropical storms and hurricanes in the Northern Hemisphere? 單選題 *Clockwise and outwardCounterclockwise and inward(正確答案)Counterclockwise and outwardClockwise and inward89. A WIND

53、 BLOWS ROUND ANTICLOCKWISE defines . 單選題 *Backing（of wind）(正確答案)Beach（to）Veering（of wind）Maintaining direction of the wind90. _ is formed when the droplets or ice crystals in clouds have become sufficiently large to fall to the ground. 單選題 *HumidityTemperaturePrecipitation(正確答案)Wind91. When crossing a front, isobar tend to _. 單選題 *change from smooth curves within the air mass to sharp bends at the front(正確答案)change from sharp bends within the air mass to smooth curves at the frontpass smoothly across the front with no chang