2-25.
Excluding the cirrus cloud shield,
what is considered to be the
forward limit of warm frontal
cloudiness?
1.
The 500-hPa ridge ahead of the
front
2.
The 700-hPa ridge ahead of the
front
3.
The 850-hPa ridge ahead of the
front
4.
The 925-hPa ridge ahead of the
front
2-26.
The slope of a warm front is nearly
horizontal near the surface, but is
steep several hundred miles to the
north.
Where should the heaviest
precipitation occur?
1.
At the surface front
2.
Immediately behind the surface
front
3.
South of the surface front
4.
Where the slope of the surface
front is greatest
2-27.
What type of flow aloft tends to
diminish cloudiness and
precipitation?
1.
Convergent flow
2.
Cyclonic flow
3.
Straight flow
4.
Anticyclonic flow
2-28.
Open cellular clouds are typically
found in which of the following
locations?
1.
Stable air masses
2.
The area immediately ahead of
cold fronts
3.
The cold air side of a cold
front
4.
The warm air side of a warm
front
2-29.
Closed cellular clouds are
predominately composed of which of
the following elements?
1.
Cumuliform elements
2.
Stratocumulus elements
3.
Stratiform elements
4.
Cirriform elements
2-30.
Which of the following conditions
is indicative of “fair weather”?
1.
The relative vorticity
increases downstream along the
streamlines
2.
The relative vorticity
decreases downstream along the
streamlines
3.
The relative vorticity
increases upstream along the
streamlines
4.
The relative vorticity remains
constant along the streamlines
2-31.
Satisfactory forecasting of the
movement of precipitation areas by
using isochrones may be obtained if
the isochrones indicate areas that
have what type of precipitation?
1.
Continuous precipitation
2.
Showery precipitation only
3.
Intermittent precipitation only
4.
Either showery or intermittent
precipitation
2-32.
Relative to the behavior of the
cloud base and ceiling in an area
of continuous precipitation, which
of the following statements is
accurate?
1.
Both the ceiling and the cloud
base will drop rapidly
2.
Both the ceiling and the cloud
base will drop gradually
3.
The ceiling will drop
gradually,
and the cloud base
will drop rapidly
4.
The ceiling will drop rapidly,
and the cloud base will drop
gradually
2-33.
Before an extrapolation of ceiling
trends can be made by using the x-t
diagram, which of the following
conditions may necessitate the
smoothing of the “curves”?
1.
Diurnal ceiling fluctuations
2.
Ceiling irregularities caused
by topographic influences
3.
Rapid and erratic up-and-down
fluctuations of the ceiling
4.
All of the above
2-34.
What should be the first step in
the construction of a “trend
chart”?
1.
Determine the source direction
of the weather
2.
Identify predictor station(s)
3.
Determine the “critical factor”
4.
Analyze the mesoscale situation
12
