BSAC OCEAN DIVER THEORY MODULE
- ADAPTING TO THE UNDERWATER
WORLD QUESTIONS AND ANSWERS
WITH VERIFIED SOLUTIONS 100%
CORRECT!!!
What causes atmospheric pressure at sea level?
✔✔ It’s caused by the weight of the air in the atmosphere pressing down on the
Earth’s surface.
How is atmospheric pressure measured?
✔✔ At sea level, it’s equal to:
1 bar
1 kilogram per square centimeter (kg/cm²)
What is the total (absolute) pressure at 40 meters underwater?
✔✔ The total pressure would be 5 bar (1 bar from the atmosphere + 4 bar from the
water).
What happens to the volume of gas in an upside-down container taken to 10
meters depth?
✔✔ The volume is reduced to half due to increased pressure.
What type of glass is recommended for dive masks?
✔✔ Tempered glass, as it’s strong and shatter-resistant.
How should diving gear be cared for after a dive?
✔✔ All equipment should be rinsed in fresh water to remove salt and debris.
- ADAPTING TO THE UNDERWATER
WORLD QUESTIONS AND ANSWERS
WITH VERIFIED SOLUTIONS 100%
CORRECT!!!
What causes atmospheric pressure at sea level?
✔✔ It’s caused by the weight of the air in the atmosphere pressing down on the
Earth’s surface.
How is atmospheric pressure measured?
✔✔ At sea level, it’s equal to:
1 bar
1 kilogram per square centimeter (kg/cm²)
What is the total (absolute) pressure at 40 meters underwater?
✔✔ The total pressure would be 5 bar (1 bar from the atmosphere + 4 bar from the
water).
What happens to the volume of gas in an upside-down container taken to 10
meters depth?
✔✔ The volume is reduced to half due to increased pressure.
What type of glass is recommended for dive masks?
✔✔ Tempered glass, as it’s strong and shatter-resistant.
How should diving gear be cared for after a dive?
✔✔ All equipment should be rinsed in fresh water to remove salt and debris.
