counterclockwise
variable
clockwise
anticyclonic
第1题：
A barometer showing falling pressure indicates the approach of a ______.
A.high pressure system
B.low pressure system
C.high dew point
D.low dew point
第2题：
If 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
第3题：
The circulation around a low pressure center in the Northern Hemisphere is ______.
A.counterclockwise
B.variable
C.clockwise
D.Anticyclonic
第4题：
In the Northern Hemisphere, if the center of a high pressure area is due west of you, what wind direction would you expect?______.
A.South to west
B.South to east
C.North to west
D.North to east
第5题：
In the Northern Hemisphere, when the center of a high pressure system is due east of your position, you can expect winds from the ______.
A.south to east
B.north to west
C.north to east
D.south to west
第6题：
A low in a marine weather report is an air pressure system the pressure at the center of which is ______.
A.the highest over the area
B.the lowest over the area
C.higher than 1013 HPA
D.lower than 1013 HPA
第7题：
If 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
第8题：
The diurnal variation of pressure is most noticeable ______.
A.above the polar circles
B.in a low pressure area
C.during periods of low temperatures
D.in the doldrums
第9题：
In the southern hemisphere the wind flow associated with a low pressure system will have which of the following characteristic？________.
A.the wind velocity is least near the center of the system
B.th e direction of the flow is counterclockwise
C.both A and B
D.neither A nor B
第10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