SDI 64 Final Exam Questions
Air passages such as your trachea (windpipe), which may contain air your
body can't use, are known as:
1: Brachia.
2: Bronchials.
3: Dead air spaces.
4: Restricted orifices. - ✔ ✔ Correct Answer:
Dead air spaces.
Explanation:
Air passages such as your trachea (windpipe), which may contain air your
body can't use, are known as dead air spaces.
All of the following are true except:
1: You can help prevent mask squeeze by exhaling periodically into your mask
during ascent.
2: Regular dental care and ensuring your teeth are free of gas spaces can
help prevent tooth squeeze.
,3: If you experience a reverse block, descend to a point where the pain
subsides, then ascend slowly while wiggling your jaw and swallowing. Repeat
this process as needed until you can ascend without pain or discomfort.
4: The danger in taking decongestants is that they may wear off during a dive
and have other possible side effects. - ✔ ✔ You can help prevent mask
squeeze by exhaling periodically into your mask during ascent.
Among the best ways to prevent decompression sickness (DCS):
1: Remain well within your dive computer's no-decompression limit.
2: Ascend no faster than the rate allowed by the dive computer.
3: Make a safety stop of between three and five minutes at a depth of 3-6
m/10-20 ft.
4: All of the above. - ✔ ✔ All of the above.
Among the easiest ways to don a heavy weight belt, at the surface or under
water, is to:
1: Pass it under your feet.
2: Roll into it.
3: Back into it.
4: None of the above. - ✔ ✔ Correct Answer:
Roll into it.
,Explanation:
Among the easiest ways to don a heavy weight belt, at the surface or under
water, is to roll into it.
Among the key points in doing a flutter kick correctly:
1: Keep your knees as straight as possible.
2: Emulate the leg movements you make when pedaling a bicycle.
3: Keep your toes pointed.
4: Both the first and third answers are correct. - ✔ ✔ Correct Answer:
Both the first and third answers are correct.
Explanation:
The key points in doing a flutter kick correctly include keeping your knees
straight and your toes pointed.
Among the limitations of full foot fins:
1: They are not well suited for colder-water diving.
2: There are no full-foot fins sufficiently powerful for use with scuba
equipment.
3: They are not well suited for entries from rocky shores.
4: Both the first and third answers are correct. - ✔ ✔ Both the first and
third answers are correct.
, Explanation:
Full foot fins are not well suited for diving in cold water or from rocky shores.
Higher-end full-foot fins may have sufficient power for overcoming the
additional drag of scuba equipment (although many full-foot fins do not).
Among the things dive buddies must agree upon prior to a dive are:
1: Depth and time limits.
2: Planned activity.
3: Procedure to follow if separated.
4: All of the above. - ✔ ✔ Correct Answer:
All of the above.
Explanation:
All of the supplied answers are things buddies should agree upon prior to the
dive.
Any time a regulator is out of your mouth under water, you should:
1: Hold your breath to conserve your remaining air.
2: Exhale a small, steady stream of bubbles.
3: Exhale forcefully to purge your lungs of air.
4: None of the above. - ✔ ✔ Correct Answer:
Air passages such as your trachea (windpipe), which may contain air your
body can't use, are known as:
1: Brachia.
2: Bronchials.
3: Dead air spaces.
4: Restricted orifices. - ✔ ✔ Correct Answer:
Dead air spaces.
Explanation:
Air passages such as your trachea (windpipe), which may contain air your
body can't use, are known as dead air spaces.
All of the following are true except:
1: You can help prevent mask squeeze by exhaling periodically into your mask
during ascent.
2: Regular dental care and ensuring your teeth are free of gas spaces can
help prevent tooth squeeze.
,3: If you experience a reverse block, descend to a point where the pain
subsides, then ascend slowly while wiggling your jaw and swallowing. Repeat
this process as needed until you can ascend without pain or discomfort.
4: The danger in taking decongestants is that they may wear off during a dive
and have other possible side effects. - ✔ ✔ You can help prevent mask
squeeze by exhaling periodically into your mask during ascent.
Among the best ways to prevent decompression sickness (DCS):
1: Remain well within your dive computer's no-decompression limit.
2: Ascend no faster than the rate allowed by the dive computer.
3: Make a safety stop of between three and five minutes at a depth of 3-6
m/10-20 ft.
4: All of the above. - ✔ ✔ All of the above.
Among the easiest ways to don a heavy weight belt, at the surface or under
water, is to:
1: Pass it under your feet.
2: Roll into it.
3: Back into it.
4: None of the above. - ✔ ✔ Correct Answer:
Roll into it.
,Explanation:
Among the easiest ways to don a heavy weight belt, at the surface or under
water, is to roll into it.
Among the key points in doing a flutter kick correctly:
1: Keep your knees as straight as possible.
2: Emulate the leg movements you make when pedaling a bicycle.
3: Keep your toes pointed.
4: Both the first and third answers are correct. - ✔ ✔ Correct Answer:
Both the first and third answers are correct.
Explanation:
The key points in doing a flutter kick correctly include keeping your knees
straight and your toes pointed.
Among the limitations of full foot fins:
1: They are not well suited for colder-water diving.
2: There are no full-foot fins sufficiently powerful for use with scuba
equipment.
3: They are not well suited for entries from rocky shores.
4: Both the first and third answers are correct. - ✔ ✔ Both the first and
third answers are correct.
, Explanation:
Full foot fins are not well suited for diving in cold water or from rocky shores.
Higher-end full-foot fins may have sufficient power for overcoming the
additional drag of scuba equipment (although many full-foot fins do not).
Among the things dive buddies must agree upon prior to a dive are:
1: Depth and time limits.
2: Planned activity.
3: Procedure to follow if separated.
4: All of the above. - ✔ ✔ Correct Answer:
All of the above.
Explanation:
All of the supplied answers are things buddies should agree upon prior to the
dive.
Any time a regulator is out of your mouth under water, you should:
1: Hold your breath to conserve your remaining air.
2: Exhale a small, steady stream of bubbles.
3: Exhale forcefully to purge your lungs of air.
4: None of the above. - ✔ ✔ Correct Answer:
