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ASSIGNMENT 4
Textbook Assignment: "The Nautical Road," chapter 4, pages 4-6 through 4-35.
4-1.
Of the following light
characteristics, which one is
considered valuable in identifying
a light?
1.
Color
2.
Rhythm
3.
Intensity
4.
Position
4-2.
Which of the following light
characteristics indicates a
group-occulting light?
1.
The intervals of darkness are
of equal duration
2.
The intervals of
darkness are
regularly repeated
3. All intervals of light and
darkness are equal
4.
The intervals of light are
equal and show
different colors
alternately
4-3.
Which of the following light
characteristics indicates an
isophase light?
1.
A light in which all durations
of light and darkness are equal
2.
A light in which the period of
light is shorter than the
period of darkness
3.
A light in which the period of
light is greater than the
period of darkness
4.
A light that shows continuously
and steadily
IN ANSWERING QUESTIONS 4-4 THROUGH 4-7,
SELECT FROM COLUMN B THE TYPE OF LIGHT
THAT MATCHES THE CHARACTERISTICS IN
COLUMN A. RESPONSES ARE USED ONLY ONCE.
A. CHARACTERISTICS
B. TYPE
4-4.
A flashing light in
1. Fl
which a flash is
regularly repeated
2. FFl
4-5.
Alternates colors at
3. AlRW
regular intervals
4. Fl(2)
4-6.
Groups of two or more
flashes at regular
intervals
4-7.
A fixed light, varied
at regular intervals
by a flash of greater
brilliance
4-8.
Which of the following lights
flashes at a rate of 60 flashes per
minute?
1.
Flashing
2. Occulting
3.
Isophase
4.
Quick
4-9.
The light abbreviation Oc(2) is
indicated on one of your charts.
What is the meaning of the (2) in
parentheses?
1.
The pattern of eclipses in the
light
2.
The pattern of flashes in the
light
3.
The flashes and eclipses are
equal
4.
The flashes and eclipses are
unequal
4-10.
Which of the following definitions
best defines the term "light
cycle"?
1.
The time it takes to complete
one phase
2.
The time it takes a light to
complete one full cycle of on
and off changes
3. The duration the light is on
4.
The duration the light is off
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