In the Northern Hemisphere，winds veering sharply to the west or northwest with increasing speed are indications that a（）.

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• In the Northern Hemisphere you are caught in the dangerous semicircle of a storm with plenty of sea room available. The best course of action is to bring the wind on the（）.

  A . port quarter and make as much headway as possible B . starboard quarter and make as much headway as possible C . starboard bow and make as much headway as possible D . port bow and make as much headway as possible

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• In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from the（）.

  A . Southwest，clockwise to northwest B . Northeast，clockwise to west-southwest C . Northeast，counterclockwise to northwest D . East，counterclockwise to south-southwest

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• What is the direction of rotation of tropical cyclones,tropical storms and hurricanes in the Northern Hemisphere?（）

  A . Clockwise and outward B . Counterclockwise and inward C . Counterclockwise and outward D . Clockwise and inward

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• In the Northern Hemisphere the major ocean currents tend to flow（）.

  A . clockwise around the North Atlantic and North Pacific Oceans B . clockwise or counterclockwise depending on whether it is warm or cold current C . counterclockwise except in the Gulf Stream D . counterclockwise around the North Atlantic and North Pacific Ocea

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• You have determined that you are in the right semicircle of a tropical cyclone in the Northern Hemisphere.What action should you take to avoid the storm（）.

  A . Place the wind on the starboard quarter and hold that course B . Place the wind on the port quarter and hold that course C . Place the wind on the port bow and hold that course D . Place the wind on the starboard bow and hold that course

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• The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.

  A . Pressure gradient B . Coriolis effect C . Aurora borealis D . Ballistic deflectio

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• Which condition indicates that you are in a hurricane’s dangerous semicircle in the Northern hemisphere（）.

  A . A backing wind B . A veering wind C . A norther D . A strong，gusty wind

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• In the Northern Hemisphere，an area of counterclockwise wind circulation surrounded by higher pressure is a（）.

  A . low B . high C . warm front D . cold front

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• Hurricanes may move in any direction．However，it is rare and generally of short duration when a hurricane in the Northern Hemisphere moves toward the（）.

  A . West or northwest B . Northeast C . Southeast D . North

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• The dangerous semicircle of a hurricane in the Northern Hemisphere is that area of the storm （）.

  A . to the right of the storm's track B . measured from true north clockwise to 180°T C . measured from true north counterclockwise to 180°T D . between the ship's heading and the bearing to the eye

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• In a tropical cyclone，in the Northern Hemisphere，a vessel hove to with the wind shifting counterclockwise is（）.

  A . ahead of the storm center B . in the dangerous semicircle C . in the navigable semicircle D . directly in the approach path of the storm

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• In the Northern Hemisphere，what type of cloud formations would you expect to see to the west of an approaching tropical wave?（）.

  A . Cumulus clouds lined up in rows extending in a northeast to southwest direction B . High altostratus clouds in the morning hours C . Cirrostratus clouds lined up in rows extending in a northeast to southwest direction D . Cirrostratus clouds lined up in rows extending in a north to south directio

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• The direction of prevailing winds in the Northern hemisphere is caused by the（）.

  A . Magnetic field at the North Pole B . Gulf Stream C . Earth's rotation D . Arctic cold front

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• In the northern hemisphere, the largest waves or swells created by a typhoon or hurricane will be located（）.

  A . in the southeast quadrant of the storm B . directly behind the storm center C . forward and to the right of its course D . behind and to the left of its course

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• In the Northern hemisphere northerly winds may cause temperature（）.

  A . falling B . rising C . constant D . same

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• In the Northern Hemisphere you are caught in the dangerous semicircle with plenty of sea room available. The best course of action is to bring the wind on the（）.

  A . starboard bow and make as much headway as possible B . starboard quarter，and make as much headway as possible C . port quarter，and make as much headway as possible D . port bow，and make as much headway as possible

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• If it is impossible to avoid a hurricane in the Northern Hemisphere，the most favorable place to be when the storm passes is in（）.

  A . the dangerous semicircle B . the eye (center) of the storm C . that half of the storm lying to the right of the storm's path D . that half of the storm lying to the left of the storm's path

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• According to Buys Ballot’s law，when an observer in the Northern Hemisphere experiences a northwest wind，the center of low pressure is located to the（）.

  A . northeast B . west-southwest C . northwest D . south-southeast

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• If an observer in the Northern Hemisphere faces the surface wind，the center of low pressure is to his（）.

  A . left，slightly behind him B . right，slightly behind him C . left，slightly in front of him D . right，slightly in front of him

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• If the center of low pressure is due west of you in the Northern Hemisphere，which wind direction should you expect（）.

  A . South to west B . South to east C . West to north D . North to east

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• In the Northern Hemisphere，a wind that shifts counterclockwise is a（）.

  A . veering wind B . backing wind C . reverse wind D . chinook wind

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• 193. The direction of prevailing winds in the Northern hemisphere is caused by the ____.

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• 88. In the Northern Hemisphere, a wind that shifts counterclockwise is a ______.

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