A.low barometric pressure
B.high barometric pressure
C.falling barometric pressure
D.pumping barometric pressure
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A.high pressures
B.low pressures
C.weak pressures
D.strong pressures
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
A.a certain area
B.all ocean areas
C.some areas
D.important areas
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 wave's steepness
A.Upwind
B.Downwind
C.Crosswind
D.Downcurrent
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In the Northern Hemisphere，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on the（）.
The passing of a low pressure system can be determined by periodically checking the（）.
When experiencing heavy winds，you should reef sails to（）.
MIST is caused by（）.
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（）.
The southeast trade winds actually blow toward the（）.
Steady precipitation is typical of（）．
In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from the（）.
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（）.
What is the first visible indication of the presence of a tropical cyclone or hurricane（）.