SDI SCUBA EXAM (ACTUAL EXAM) WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST 2025 ALREADY GRADED A+
A rip current is a narrow flow of swiftly moving water that runs ____ to shore. -
ANSWERS-perpendicular
Rip currents form when - ANSWERS-water flowing out to sea is funneled
through a narrow restriction, such as two sandbars or a break in a coral reef.
A scuba cylinder that normally lasts one hour at the surface will last _______
minutes at 20 meters/66 feet. - ANSWERS-20
A repetitive dive is any dive: - ANSWERS-any dive made within 24 hours of a
previous dive, or in which your computer indicates there is residual nitrogen left
in your system from a prior dive.
, Should you become entangled under water: - ANSWERS-do not struggle in an
effort to free yourself. If you cannot easily untangle yourself, have your buddy
do it for you.
Seasickness medications are only effective if taken well in ____ of the onset of
symptoms. - ANSWERS-advance
Tides can: - ANSWERS-- make water seem deeper or shallower, stronger and
difficult, adverse effect on visibility
Cause of permanent ocean currents - ANSWERS-The sun warming water near
the equator, coupled with the earth's rotation, is the primary cause of
permanent ocean currents.
Wave height and length - ANSWERS-Wave height is the distance from its highest
point (crest) to its lowest point (trough). Wave length is the distance from crest
to crest.
formation of surf - ANSWERS-A wave encountering shallow water begins to slow
at its bottom, while the top of the wave continues at its previous speed. This
causes the wave to break.
what is surge - ANSWERS-Surge is the back-and-forth movement of water
caused by waves passing over head.
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST 2025 ALREADY GRADED A+
A rip current is a narrow flow of swiftly moving water that runs ____ to shore. -
ANSWERS-perpendicular
Rip currents form when - ANSWERS-water flowing out to sea is funneled
through a narrow restriction, such as two sandbars or a break in a coral reef.
A scuba cylinder that normally lasts one hour at the surface will last _______
minutes at 20 meters/66 feet. - ANSWERS-20
A repetitive dive is any dive: - ANSWERS-any dive made within 24 hours of a
previous dive, or in which your computer indicates there is residual nitrogen left
in your system from a prior dive.
, Should you become entangled under water: - ANSWERS-do not struggle in an
effort to free yourself. If you cannot easily untangle yourself, have your buddy
do it for you.
Seasickness medications are only effective if taken well in ____ of the onset of
symptoms. - ANSWERS-advance
Tides can: - ANSWERS-- make water seem deeper or shallower, stronger and
difficult, adverse effect on visibility
Cause of permanent ocean currents - ANSWERS-The sun warming water near
the equator, coupled with the earth's rotation, is the primary cause of
permanent ocean currents.
Wave height and length - ANSWERS-Wave height is the distance from its highest
point (crest) to its lowest point (trough). Wave length is the distance from crest
to crest.
formation of surf - ANSWERS-A wave encountering shallow water begins to slow
at its bottom, while the top of the wave continues at its previous speed. This
causes the wave to break.
what is surge - ANSWERS-Surge is the back-and-forth movement of water
caused by waves passing over head.
