9 航海气象.doc

9 航海气象9.2 海上气象报告与气象导航951When winds of force reach 10-11 in Beaufort Scale，usually we call such winds as _. A. Hurricane B. Breeze C. Storm D. Gale KEY: C952The Routing System which aimed at reducing the risk of casualties is called as _. A. Traffic Separation Schemes B. Recommended tracks C. Precautionary areas D. Inshore traffic zones KEY: A953_ LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM FROM FM CEN TO 11N 171W A. SHLW B. SCTD C. OBS D. SW KEY: A954_ 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 KEY: B955_ rain means it rains in some parts of the area A. Squally B. Isolated C. Scattered D. Occasional KEY: C956On account of the bad weather，my ETA is amended to read 1830 his on July 15th A. For the account of B. Because C. Owing to D. For fear of KEY: C957A 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 KEY: A958A feature of an inflatable raft which helps keep people stationary in rough weather is _. A. lashings on the floor of the raft for the passengers feet B. straps from the overhead C. lifelines on the inside of the raft D. ridges in the floor of the raft KEY: C959A line on a weather chart connecting places which have the same barometric pressure is called an _. A. isotherm B. isallobar C. isobar D. isotope KEY: C960A 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 KEY: D961A 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 KEY: D962A low，uniform layer of cloud resembling fog，but not resting on the ground，is called _. A. cumulus B. nimbus C. stratus D. cirrus KEY: C963A mercurial barometer at sea is subject to rapid variations in height (pumping) due to the pitch and roll of the vessel. To avoid this error，measurements of atmospheric pressure at sea are usually measured with a(n) _. A. syphon barometer B. cistern barometer C. aneroid barometer D. fortin barometer KEY: C964A microbarograph is a precision instrument that provides a _. A. charted record of atmospheric temperature over time B. charted record of atmospheric pressure over time C. graphic record of combustible gases measured in an atmosphere D. graphic record of vapor pressure from a flammable/combustible liquid KEY: B965A millibar is a unit of _. A. humidity B. precipitation C. pressure D. temperature KEY: C966A 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 KEY: B967A sylphon cell is a part of a _. A. maximum thermometer B. barograph C. thermograph D. hygrometer KEY: B968A tropical cyclone has recurved and entered temperate latitudes. In the Northern Hemisphere when a large high pressure system lies north of the storm，what situation may occur? A. The low may suddenly deepen，and the cyclone intensify and pick up speed. B. The left semicircle may become the dangerous semicircle. C. The low and the high may merge and cancel out the weather characteristics of each. D. The high may force the cyclone to reverse its track. KEY: B969A tropical storm is building strength some distance from your ship. Waves are coming from the east，with periods increasing from 5 seconds to 15 seconds. The swell is from the east. Where was the storm when these new swells were generated? A. To the north of you B. To the south of you C. To the east of you D. To the west of you KEY: C970A tropical wave is located 200 miles due west of your position，which is north of the equator. Where will the wave be in 24 hours? A. Farther away to the west B. Farther away to the east C. In the same place D. Closer and to the west KEY: A971A tropical wave is usually preceded by _. A. tropical storms B. good weather C. heavy rain and cloudiness D. heavy seas KEY: B972A weather forecast states that the wind 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 KEY: B973A weather map is a synoptic data because it _. A. summarizes a great deal of information B. can be interpreted accurately C. appears daily D. is prepared by the Weather Bureau KEY: A974A WIND BLOWS ROUND ANTICLOCKWISE defines _. A. Backing (of wind) B. Beach (to) C. Veering (of wind) D. Maintaining direction of the wind KEY: A975After a cold front passes the barometric pressure usually _. A. fluctuates B. remains the same C. remains the same，with clouds forming rapidly D. rises，often quite rapidly，with clearing skies KEY: D976After 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. rises，and the temperature rises KEY: C977All of the following are associated with cumulonimbus clouds EXCEPT _. A. steady rainfall B. hail storms C. thunderstorms D. tornadoes or waterspouts KEY: A978An 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 KEY: B979An aneroid barometer is an instrument _. A. used to measure the speed of wind B. in which the pressure of the air is measured C. that tells which direction a storm is coming from D. used to measure the height of waves KEY: B980An occluded front on a weather map is colored _. A. blue line B. purple line C. dashed blue line D. alternate red and blue line KEY: B981Anticyclones are usually characterized by _. A. dry，fair weather B. high winds and cloudiness C. gustiness and continuous precipitation D. overcast skies KEY: A982As the temperature for a given mass of air increases，the _. A. dew point increases B. dew point decreases C. relative humidity increases D. relative humidity decreases KEY: D983BASHI：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 TO NEAR GALE KEY: A984CAPE 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 KEY: A985During the voyage he encountered boisterous winds and heavy weather during which time the vessel _ heavily and to such an extent that at times it was necessary to change course A. moved B. labored C. drove D. went KEY: B986During the voyage my ship _ bad weather in the Pacific Ocean A. meets with B. has met with C. met with D. meeted with KEY: C987Especially in adverse weather，risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit? _. A. Upwind B. Downwind C. Crosswind D. Downcurrent KEY: A988Fleet weather forecast messages are the expected conditions in _. A. a certain area B. all ocean areas C. some areas D. important areas KEY: A989For an accurate barometer check，you would _. A. check it with a barometer on another vessel B. take readings from several barometers and average them C. check it with the barometer at the ship chandlery D. check it against radio or National Weather Service reports of the immediate vicinity KEY: D990Gale warnings are usually issued when winds of _ 8-9 are expected A. wind Speed B. Air Force C. wind Velocity D. Beaufort Force KEY: D991HIGH WAVES；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 KEY: D992If a weather bulletin shows the center of a low pressure system to be 100 miles due east of you，what winds can you expect in the Southern Hemisphere? _. A. South-southwesterly B. North-northwesterly C. South-southeasterly D. North-northeasterly KEY: A993If the sky was clear，with the exception of a few cumulus clouds，it would indicate _. A. rain B. hurricane weather C. fair weather D. fog setting in KEY: C994If your weather bulletin shows the center of a low pressure area to be 100 miles due east of your position，what winds can you expect in the Northern Hemisphere? _. A. East to northeast B. East to southeast C. North to northwest D. South to southeast KEY: C995In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as _. A. Moderate gale B. Near gale C. Strong gale D. Whole gale KEY: B996INTERTROPICAL 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 KEY: C997It is predicted that heavy rains are _ to flood the harbor and its vicinity in a few days A. frightening B. threatening C. scattering D. warning KEY: B998Mechanical lifting of air by the upslope slant of the terrain is called _. A. vertical lifting B. convective lifting C. advective lifting D. topographic lifting KEY: D999Of the following，_ is not a wind A. bora B. gust C. gregale D. floe KEY: D1000OWING TROPICAL STORM9706 CROSSING OUR/COURSE PLSPERMIT SHELTERING KAGOSHIMA KAIWAN. This cable indicates that _. A. she requested shelter permission B. she intended to berth at port of KAGOSHIMA C. she intended to change her course D. she was reporting to the port that a tropical storm is coming KEY: A9.3 海上天气现象1001When a wind blows round clockwise，it is _. A. Variable B. Changing C. Backing D. Veering KEY: D1002Isobars on a synoptic chart are useful in predicting _. A. temperature B. dew point C. wind velocity D. relative humidity KEY: C1003_ 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 KEY: C1004A 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. high winds C. winds veering from south，through west，to northwest D. light showers KEY: D1005A katabatic wind blows _. A. up an incline due to surface heating B. in a circular pattern C. down an incline due to cooling of the air D. horizontally between a high and a low pressure area KEY: C1006A steep barometric gradient indicates _. A. calms B. light winds C. strong winds D. precipitation KEY: C1007A 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 strain on the mooring lines C. chafing gear on the mooring lines D. grease on the mooring lines KEY: C1008A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is called _. A. Tehuan tepecer B. Papagayo C. Norther D. Pampero KEY: B1009A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is a _. A. Papagayo B. fall wind C. foehn D. williwaw KEY: B1010A thin，whitish，high cloud popularly known as mares tails is _. A. altostratus B. stratus C. cumulus D. cirrus KEY: D1011A very light breeze that causes ripples on a small area of still water is a _. A. cats paw B. hogs breath C. williwaw D. chinook KEY: A1012Above-normal tides near the center of a hurricane maybe caused by the _. A. high barometric pressure B. jet stream C. storm surge D. torrential rains KEY: C1013Altocumulus clouds are defined as _. A. high clouds B. middle clouds C. low clouds D. vertical development clouds KEY: B1014An anemometer on a moving vessel measures _. A. apparent wind speed only B. true wind speed and true wind direction C. true wind speed only D. apparent wind speed and true wind direction KEY: A1015An aneroid barometer reading should be corrected for differences in _. A. elevation B. temperature C. wind speed D. latitude KEY: A1016Cirrus clouds are composed primarily of _. A. ice crystals B. water droplets C. snow crystals D. nitrogen KEY: A1017Early indications of the approach of a hurricane may be all of the following EXCEPT _. A. short confused swells B. gradually increasing white clouds (mares tails) C. pumping barometer D. continuous fine mist-like rain KEY: A1018Especially in adverse weather，risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit? _. A. Upwind B. Downwind C. Crosswind D. Downcurrent KEY: A1019Fetch is the _. A. distance a wave travels between formation and decay B. stretch of water over which a wave-forming wind blows C. time in seconds required for two crests to pass a given point D. measurement of a waves steepness KEY: B1020Fleet weather forecast messages are the expected conditions in _. A. a certain area B. all ocean areas C. some areas D. important areas KEY: A1021Fog is likely to occur when there is little difference between the dew point and the _. A. relative humidity B. air temperature C. barometric pressure D. absolute humidity KEY: B1022For an accurate barometer check，you would _. A. check it with a barometer on another vessel B. take readings from several barometers and average them C. check it with the barometer at the ship chandlery D. check it against radio or National Weather Service reports of the immediate vicinity KEY: D1023Gasoline tank vent lines on board small passenger vesselsmust be fitted with removable flame screens _. A. and 30 square inches of louvers B. three inches in diameter with a check valve to prevent water from entering in heavy weather C. three inches in circumference inside the fill pipe D. consisting of a single screen of at least 30 X 30 mesh，corrosion resistant wire KEY: D1024Generally speaking，with _ the weather becomes cloudy or overcast with strong winds A. high pressures B. low pressures C. weak pressures D. strong pressures KEY: B1025Good weather is usually associated with a region of _. A. low barometric pressure B. high barometric pressure C. falling barometric pressure D. pumping barometric pressure KEY: B1026High clouds，composed of small white flakes or scaly globular masses，and often banded together to form a mackerel sky，would be classified as _. A. cirrus B. cirrocumulus C. altostratus D. cumulonimbus KEY: B1027High pressure ridge _ from Sevastopol to eastern Libya A. reaching B. extending C. increasing D. upgrading KEY: B1028Hurricane warnings are issued _ when winds of force 12 or above are expected A. in all parts of the world B. in some parts of the world C. from all corners of the world D. from every corner of the world KEY: B1029If you are caught in the left semicircle of a tropical storm，in the Southern Hemisphere，you should bring the wind _. A. on the starboard quarter，hold course and make as much way as possible B. 2 points on the port quarter，and make as much way as possible C. on the p