SSI Science of Diving – Study Guide, Key Concepts & Practice Questions Review
Part 4 - correct answer ✔✔Part 4
When oxygen pressure in the body drops below a ppO2 of 0.17 bar, mild symptoms of hypoxia
occur. Blackout and death may occur if the ppO2 drops to: - correct answer ✔✔0.10 bar
A dive is defined as a decompression dive only if you exceed the: - correct answer ✔✔No-
decompression limits
Tissue half-time is a method used to describe the time necessary to allow the amount of gas in a
particular tissue to change by: - correct answer ✔✔50%
The amount of a gas which dissolves in a liquid is proportional to: - correct answer ✔✔The
partial pressure of that gas
According to the SSI Training Standards, diving at altitude is any dive: - correct answer
✔✔Above 300 meters
The most likely source of carbon monoxide in scuba cylinders is: - correct answer ✔✔All
answers are correct
At sea level, human body tissues are saturated with nitrogen at a partial pressure equal to: -
correct answer ✔✔The partial pressure of the gas in alveolar air
The term "fast tissue" refers to: - correct answer ✔✔The rate at which they absorb and
eliminate nitrogen
Part 4 - correct answer ✔✔Part 4
When oxygen pressure in the body drops below a ppO2 of 0.17 bar, mild symptoms of hypoxia
occur. Blackout and death may occur if the ppO2 drops to: - correct answer ✔✔0.10 bar
A dive is defined as a decompression dive only if you exceed the: - correct answer ✔✔No-
decompression limits
Tissue half-time is a method used to describe the time necessary to allow the amount of gas in a
particular tissue to change by: - correct answer ✔✔50%
The amount of a gas which dissolves in a liquid is proportional to: - correct answer ✔✔The
partial pressure of that gas
According to the SSI Training Standards, diving at altitude is any dive: - correct answer
✔✔Above 300 meters
The most likely source of carbon monoxide in scuba cylinders is: - correct answer ✔✔All
answers are correct
At sea level, human body tissues are saturated with nitrogen at a partial pressure equal to: -
correct answer ✔✔The partial pressure of the gas in alveolar air
The term "fast tissue" refers to: - correct answer ✔✔The rate at which they absorb and
eliminate nitrogen
