SDI FINAL EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL DEFINED
ANSWERS LATEST 2026 ALREADY GRADED A+
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Match Blocks Charms NEW
Terms in this set (64)
Objects under water appear: Closer and larger than they do on land.
1: The same size as they do on land.
2: Twice as large as they do on land.
3: Closer and larger than they do on
land.
4: Smaller and farther away than they
do on land.
,As you descend: All of the above.
1: Colors appear to fade.
2: Reds and oranges are among the
first colors to disappear.
3: At 30 m/99 ft, little color remains
other than blues, grays, blacks and
whites.
4: All of the above.
Which of the following statements is Both the second and the third answer are correct.
true? There may be more than one
correct answer.
1: Water is 400 times denser than air.
2: Water is 800 times denser than air.
3: Sound travels about four times
faster underwater.
4: Both the second and the third
answer are correct.
, Which of the following is/are true? Water conducts heat away from your body 25 times
1: Water conducts heat away from faster than air does.
your body ten times faster than air
does.
2: Water conducts heat away from
your body 25 times faster than air
does.
3: Fresh water conducts heat away
from your body faster than salt water
does.
4: Salt water conducts heat away
from your body faster than fresh
water does.
When water stratifies itself into layers, Thermocline.
according to temperature, the
boundary between layers is known as
a(n):
1: Halocline.
2: Ichtyocline.
3: Thermodyne.
4: Thermocline.
Which of the following is/are true? All of the above.
1: Tides can make the water at a
particular dive site noticeably deeper
or shallower than you may have
experienced previously.
2: Tidal currents can be very strong,
making diving difficult or even
dangerous.
3: Strong tidal currents can have an
adverse effect on visibility.
4: All of the above.
QUESTIONS AND CORRECTLY WELL DEFINED
ANSWERS LATEST 2026 ALREADY GRADED A+
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (64)
Objects under water appear: Closer and larger than they do on land.
1: The same size as they do on land.
2: Twice as large as they do on land.
3: Closer and larger than they do on
land.
4: Smaller and farther away than they
do on land.
,As you descend: All of the above.
1: Colors appear to fade.
2: Reds and oranges are among the
first colors to disappear.
3: At 30 m/99 ft, little color remains
other than blues, grays, blacks and
whites.
4: All of the above.
Which of the following statements is Both the second and the third answer are correct.
true? There may be more than one
correct answer.
1: Water is 400 times denser than air.
2: Water is 800 times denser than air.
3: Sound travels about four times
faster underwater.
4: Both the second and the third
answer are correct.
, Which of the following is/are true? Water conducts heat away from your body 25 times
1: Water conducts heat away from faster than air does.
your body ten times faster than air
does.
2: Water conducts heat away from
your body 25 times faster than air
does.
3: Fresh water conducts heat away
from your body faster than salt water
does.
4: Salt water conducts heat away
from your body faster than fresh
water does.
When water stratifies itself into layers, Thermocline.
according to temperature, the
boundary between layers is known as
a(n):
1: Halocline.
2: Ichtyocline.
3: Thermodyne.
4: Thermocline.
Which of the following is/are true? All of the above.
1: Tides can make the water at a
particular dive site noticeably deeper
or shallower than you may have
experienced previously.
2: Tidal currents can be very strong,
making diving difficult or even
dangerous.
3: Strong tidal currents can have an
adverse effect on visibility.
4: All of the above.
