2-27.
Which of the following hydrographic
2-32.
What type of breaker is characterized by
features is the most important factor in
violent tumbling action and a loud
determining breaker type?
explosive sound?
1.
Tides
2.
Shoreline configuration
3.
Beach slope
4.
Nearshore currents
2-28.
Which of the following factors that affect
surf height may change in a relatively short
period of time?
1.
Beach slope
2.
Beach face
3.
Deep-water sea wave height
4.
Offshore bottom hydrography
2-29.
Refraction is the bending of waves toward
areas of slower wave speed?
1.
True
2.
False
2-30.
What information is included in SUROB
element ALFA?
1.
To the nearest foot, average height of
100 consecutive observed breakers
2.
To the nearest foot, average height of
only the highest one-third of 100
observed breakers
3.
To the nearest half-foot, average height
of 100 consecutive observed breakers
4.
To the nearest half-foot, average height
of only the highest one-third of 100
observed breakers
2-31.
Spilling breakers generally occur on
beaches with what type of slope?
1.
Gentle
2.
Moderate
3.
Steep
4.
Extreme
1.
Spilling
2.
Plunging
3.
Surging
4.
Curling
2-33.
You are standing on the beach looking
seaward. Breakers are approaching the
beach from your right, moving toward your
left, making a 30-degree angle to the beach.
How should the breaker angle be
identified?
1.
30° left flank
2.
30° right flank
3.
60° left flank
4.
60° right flank
2-34.
An empty soda can is seen floating parallel
to shore. If the can moves 67 feet during 1
minute, what is the approximate littoral
current speed?
1.
6.700 kt
2.
1.100 kt
3.
0.670 kt
4.
0.067 kt
2-35.
In element HOTEL of the SUROB, how
should wind direction be reported?
1.
True bearings only
2.
Relative bearing to the beach
3.
Relative bearing to the task group
4.
Magnetic bearings only
2-36.
What is the purpose of the Modified Surf
Index?
1.
Used as a "go/no go" decision aid for
amphibious landings
2.
Used as a modification tool for surf
forecasts
3.
Used to adjust the significant breaker
height prior to reporting
4.
Used to calculate secondary significant
breaker height
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