5-11.
With regard to classification, how does spray
differ from blowing spray?
1.
Wind speed
2.
Visibility
3.
Wave heights
4.
Droplet size
5-12.
Tornadoes travel at what average range of
speed?
1.
0 to 5 knots
2.
7 to 15 knots
3.
12 to 20 knots
4.
22 to 34 knots
5-13.
Which of the following areas is most conducive
for the formation of tornadoes?
1.
Cols
2.
30 miles to the rear of short-wave troughs
3.
75 to 180 miles in advance of fast-moving
cold fronts
4.
In areas of warm air overrunning cold air
5-14.
Which of the following conditions is NOT
indicative of tornado formation?
1.
Strong convergent winds at the surface
2.
Suppressed convection up to the minus
10°C isotherm
3.
Marked convective instability
4.
Strong horizontal wind shear
5-15.
Upon observing the development of a water-
spout, how can an observer tell, if it is of the
local or tornadic variety?
1.
Size
2.
Stability index
3.
Development process
4.
Vertical extent of convective clouds
5-16.
Which of the following lithometeors reduce(s)
visibility in a veil-like cover?
1.
Smoke
2.
Dust storms
3.
Haze
4.
Sand storms
5-17.
Your station’s visibility markers are set at 1/8,
1/4, 3/8, 1/2, 3/4, 1, 1 1/2, 2, 2 1/2, 3, 4, 5, 6, 7,
and 15 miles. What is the maximum distance
(by marker) that your observer will be able to
see in a severe dust storm?
1.
1/8 mi
2.
1/4 mi
3.
3/8 mi
4.
1/2 mi
5-18.
Which of the following statements is NOT a
characteristic of photometeors?
1.
They appear as luminous patterns in the
sky
2.
Many are cloud related
3.
They help in describing the state of the
atmosphere
4.
They are all precursors of bad weather
5-19.
When light encounters any substance, which of
the following occurrences might take place?
1.
Refraction only
2.
Reflection or refraction
3.
Absorption or refraction
4.
Absorption, reflection, or refraction
5-20.
Visible light occupies that portion of the
electromagnetic spectrum between
1.
4000 and 7000 angstroms
2.
2500 and 4000 angstroms
3.
1200 and 2500 angstroms
4.
400 and 1100 angstroms
5-21.
How does the Moon produce moonlight?
1.
It is a luminous body and produces its own
light
2.
It
absorbs
light
from
the
Sun
and
regenerates it at night
3.
It reflects the light it receives from the Sun
4.
Through a combination of reflection,
absorption, and refraction
5-22.
A substance permits the passage of light
through it, but the light appears clouded, and
viewing things through such a substance is
impaired. This substance is described as being
1.
transparent
2.
translucent
3.
opaque
4.
fluorescent
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