單項(xiàng)選擇題Fetch 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 wave's steepness


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1.單項(xiàng)選擇題Cyclones that have warm sectors usually move().

A.westerly
B.parallel to the isobars in the warm sector
C.toward the nearest high pressure area
D.faster than the accompanying cold front

2.單項(xiàng)選擇題Cumulus clouds that have undergone vertical development and have become cumulonimbus in form,indicate().

A.clearing weather
B.that a warm front has passed
C.probable thunderstorm activity
D.an approaching hurricane or typhoon

3.單項(xiàng)選擇題Cumulonimbus clouds are formed by().

A.vertical air movements
B.heavy rainstorms
C.horizontal air movements
D.any movement of moist air

4.單項(xiàng)選擇題A()is created by a pressure gradient or slope in the water level.

A.gradient current
B.density current
C.swift current
D.torrent current

最新試題

The passing of a low pressure system can be determined by periodically checking the().

題型:?jiǎn)雾?xiàng)選擇題

Which type of precipitation is a product of the violent convection found in thunderstorms().

題型:?jiǎn)雾?xiàng)選擇題

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().

題型:?jiǎn)雾?xiàng)選擇題

Two well-developed high pressure areas may be separated by a().

題型:?jiǎn)雾?xiàng)選擇題

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

題型:?jiǎn)雾?xiàng)選擇題

The wind is()and decreasing.

題型:?jiǎn)雾?xiàng)選擇題

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

題型:?jiǎn)雾?xiàng)選擇題

Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should().

題型:?jiǎn)雾?xiàng)選擇題

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().

題型:?jiǎn)雾?xiàng)選擇題

When a hurricane passes into high latitudes over colder water and the source of heat is disrupted,the storm assumes the characteristics of().

題型:?jiǎn)雾?xiàng)選擇題