In the Southern Hemisphere winds in a ...

单项选择题In the Southern Hemisphere winds in a low pressure system rotate in a（）.

A.clockwise direction
B.northeasterly direction
C.northerly direction
D.counterclockwise direction

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1.单项选择题In the relatively calm area near the hurricane center，the seas are（）.

A.moderate but easily navigated
B.calm
C.mountainous and confused
D.mountainous but fairly regular as far as direction is concerned

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2.单项选择题In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causing the wind is located to your（）.

A.NNW
B.WSW
C.ESE
D.SSW

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3.单项选择题In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.

A.the wind speed is greater here since the wind is traveling in the same general direction as the storm's track
B.the direction of the wind and seas might carry a vessel into the path of the storm
C.the seas are higher because of greater wind speed
D.All of the above

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4.单项选择题In the Northern Hemisphere，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on the（）.

A.Starboard quarter，hold course and make as much speed as possible
B.Port bow，hold course and make as much speed as possible until the hurricane has passed
C.Port quarter，maintain course and make as much speed as possible
D.Starboard bow and heave to until the hurricane has passed

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5.单项选择题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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6.单项选择题In the Northern Hemisphere a wind is said to veer when the wind（）.

A.Changes direction clockwise，as from north to east，etc
B.Changes direction violently and erratically
C.Remains constant in direction and speed
D.Changes direction counterclockwise，as from south to east，etc

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7.单项选择题In regions near the poles，the winds are generally described as（）.

A.Westerlies
B.Easterlies
C.Northerlies
D.Southerlies

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8.单项选择题If you observe the point of cloud convergence shifting to the right and the “bar”of the storm appears to move along the horizon（）.

A.The center of the storm will by-pass you
B.The storm will strike you on the starboard side
C.You are in the direct path of the storm and should take immediate steps to batten down loose gear
D.The storm is starting to break up

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9.单项选择题If 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 port bow，and make as much way as possible
D.Dead ahead and heave to

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10.单项选择题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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