Situations in which you might want to remove your weight system
include:
A. Emergencies.
B. Controlled seated entries.
C. Small boat exits.
D. Both the first and third answers are correct.
- Correct Answer - D. Both the first and third answers are correct.
You can best don your scuba unit at the surface by:
A. Passing it over your head.
B. Putting it on like a jacket
C. Sitting on it.
D. Both the second and third answers are correct.
- Correct Answer - D. Both the second and third answers are
correct.
Objects under water appear:
,A. The same size as they do on land.
B. Twice as large as they do on land.
C. Closer and larger than they do on land.
D. Smaller and farther away than they do on land.
- Correct Answer - C. Closer and larger than they do on land.
Which of the following is/are true?
A. Tides seldom have a significant impact on depth or dive plans.
B. Strong tidal currents frequently bring clearer water with them.
C. Tidal currents can be very strong, making diving difficult or
even dangerous.
D. None of the above.
- Correct Answer - C. Tidal currents can be very strong, making
diving difficult or even dangerous.
Which of the following is not true?
A. Longshore currents always move in the same direction.
B. Wind, waves and tides are among the factors that can affect
the direction of longshore currents.
C. Longshore currents frequently move in the same direction as
permanent offshore currents.
D. Local dive operators are a good source of information on the
behavior of longshore currents.
, - Correct Answer - A. Longshore currents always move in the
same direction.
Which of the following is/are true?
A. If caught in a rip current, swim directly towards shore, using the
most powerful kick possible.
B. If caught in a rip current, swim perpendicular to shore, until you
are completely out of the rip current, then swim in towards shore.
C. If caught in a rip current, swim parallel to shore, until you are
completely out of the rip current, then swim in towards shore.
D. Don't fight the rip current relax and let it carry you closer to
shore.
- Correct Answer - C. If caught in a rip current, swim parallel to
shore, until you are completely out of the rip current, then swim in
towards shore.
Which of the following statements are true?
A. Wave height is the distance from its highest point (crest) to its
lowest point (trough).
B. Wave length is the distance from crest to crest.
C. Wave oscillation to calculated by multiplying the wave height
times its length.
D. Both the first and second answers are correct.
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