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SDI Open Water Scuba Diver Exam Questions And Answers Rated A+
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SDI Open Water Scuba Diver Exam Questions And Answers Rated A+
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SDI Open Water Scuba Diver Exam Questions AndAnswers Rated A+
Objects under water appear ANS Closer and larger than they do on land
How much faster does sound travel in water, compared to air? ANS 4 times
Water conducts heat away from your body ANS 25 times faster than air does
As you descend ANS colors fade, reds and oranges fade first, 30 meters seem blue and gray
water temp does your body need thermal protection ANS 86 degrees
What does SCUBA mean ANS self-contained underwater breathing apparatus
When water stratifies itself into layers, according to temperature, the boundary between layers is
known as a(n):
1: Halocline.
2: Ichtyocline.
3: Thermodyne.
4: Thermocline. ANS Thermocline
What is the primary cause of waves? ANS wind
Which of the following factors do we take into account when measuring waves? ANS Height,
Length
Which of the following is incorrect? ANS Waves are not hazardous to divers during shore dives
, The consequences of becoming cold under water include the following except ANS improved
judgment and coordination
Because sound travels faster under water: ANS Its harder to determine the direction from which a
sound is coming
Entering through surf requires special skills. These skills are often included in beginning scuba
course taught in areas in which surf entries are common ANS true
which of the following are true ANS Surge is the back-and-forth movement of water caused by
passing over head
Which of the following are true ANS The sun warming water near the equator, coupled with the
earth's rotation, is the primary cause of permanent ocean currents
despite its apparent warmth, divers in warm waters still need to consider to wear protection ANS
true
longshore currents always move in the same direction as prevailing offshore currents ANS false
a rip current is a narrow flow of swiftly moving water that runs parallel to shore ANS false
the trick to dealing with surge is to anticipate its action in order to avoid contact with stationary
objects ANS true
what is the most effective way to get out of a rip current ANS swim parallel to shore, until out of
current
the best time to dive is during a slack tide ANS true
we pose greater threat to underwater plants and animals ANS true
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