SDI (Scuba Diving International) Part 2 Questions and Answers New (2024/2025) Solved 100% Correct
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Course
SDI Part 2
Institution
SDI Part 2
What medical problem can occur if a diver ascends much too rapidly for nitrogen to be
slowly released? - ️️It can come out of solution into your blood making bubbles
which collect at your joints causing the bends or decompression sickness.
What will be the volume in a ball that is filled wit...
SDI (Scuba Diving International) Part 2
What medical problem can occur if a diver ascends much too rapidly for nitrogen to be
slowly released? - ✔️✔️It can come out of solution into your blood making bubbles
which collect at your joints causing the bends or decompression sickness.
What will be the volume in a ball that is filled with two cubic feet of air at 99 feet when
it's taken to the surface? - ✔️✔️8 cubic feet
If a scuba cylinder lasts 2 hours at sea level, how long will it last at 20 meters (66 feet)?
- ✔️✔️40 minutes
How often should a scuba diver equalize during a descent? - ✔️✔️at the surface and
every couple of feet as you descend.
What should you do if you experience discomfort in your ears upon descending? -
✔️✔️Stop and ascend a few feet until you no longer feel any discomfort. Try to
equalize again and continue with your descent.
What is a reverse block? - ✔️✔️When air cannot escape from a air space during
ascent
What should you do if you experience a reverse block upon ascending? -
✔️✔️Descend a couple of feet until the pain subsides, wait a minute, and continue your
ascent.
What is the absolute pressure (in atmospheres/bars, ATM) at 20 meters(66 feet) -
✔️✔️2 ATM
What is the most important rule in scuba diving? - ✔️✔️keep breathing and never hold
your breath
What is the most serious injury that a diver could suffer from if they hold their breath
upon ascending? - ✔️✔️lung over-expansion injury or ruptured lung
Which gas component in air causes decompression sickness and narcosis? -
✔️✔️nitrogen
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