SDI Open Water Set Questions and Answers | Latest Update 2024/2025
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Course
SDI
Institution
SDI
What is the absolute pressure (in atm) at 66 feet?
~~> 2 atm
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
How many more times dense is the air in a balloon at 4 atm compared to the
air density...
Which gas component in air causes decompression sickness and narcosis?
✓ ~~> Nitrogen
What medical problem can occur if a diver ascends much too rapidly for
nitrogen to be slowly released, or off-gassed?
✓ ~~> Decompression Sickness
List at least 5 factors that can predispose a diver to decompression sickness.
✓ ~~> 1. Obesity
2. Age
3. Illness
4. Past/Present Injuries
5. Prior History of DCS
6. Fatigue
7. Dehydration
8. Smoke inhalation
9. Use of drugs/alcohol prior to dive
10. Repetative Dives
11. Overexertion
12. Cold Water
13. Diving at higher altitudes
Describe the symptoms of DCS, including mild to severe signs and symptoms.
Master01 | September, 2024/2025 | Latest update
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