PADI Open Water Diver Certification
2023-2024 Questions and Answers.
(Graded A+)
pressure of air is expressed as - ANSWER-one bar (metric) or one atm (imperial)
10 mtres/ 33 feet exerts the same pressure as - ANSWER-the whole atmoshpere
at 0 mtres/feet (sea level) the total pressure is - ANSWER-1 bar/atm
at 10 bar/ 33 feet the total pressure is - ANSWER-2 bar/ atm (one air, one water)
Can water be compressed? - ANSWER-no, so its volume and density dont change with
pressure changes
Your air supply lasts ½ as long at - ANSWER-10 metres/33 feet (2 bar/ata) than at the
surface (1 bar/ata).
If an object weighs the same as the water it displaces, it neither floats nor sinks. This is
- ANSWER-neutral buoyancy
two pieces of equipment to control your buoyancy: - ANSWER-your weight system and
your BCD (Buoyancy Control Device)
To actually change your buoyancy during a dive, you use your - ANSWER-BCD
Buoyancy control allows you to: - ANSWER--Descend and ascend at a slow, controlled
rate.
Stop a descent or ascent and maintain your depth with little effort.
Float comfortably on the surface.
Save energy and avoid harming sensitive aquatic organisms by swimming neutrally
buoyant and controlling your movements.
Maintain the underwater visibility by helping you not stir up the bottom.
Enjoy one of the sensations unique to diving - "weightlessness."
four equipment systems in the scuba kit - ANSWER-1. BCD - Buoyancy control device -
adjusts buoyancy as you dive
2. regulator -delivers breathing air at surrounding pressure
3. cylinder
4. weight system
2023-2024 Questions and Answers.
(Graded A+)
pressure of air is expressed as - ANSWER-one bar (metric) or one atm (imperial)
10 mtres/ 33 feet exerts the same pressure as - ANSWER-the whole atmoshpere
at 0 mtres/feet (sea level) the total pressure is - ANSWER-1 bar/atm
at 10 bar/ 33 feet the total pressure is - ANSWER-2 bar/ atm (one air, one water)
Can water be compressed? - ANSWER-no, so its volume and density dont change with
pressure changes
Your air supply lasts ½ as long at - ANSWER-10 metres/33 feet (2 bar/ata) than at the
surface (1 bar/ata).
If an object weighs the same as the water it displaces, it neither floats nor sinks. This is
- ANSWER-neutral buoyancy
two pieces of equipment to control your buoyancy: - ANSWER-your weight system and
your BCD (Buoyancy Control Device)
To actually change your buoyancy during a dive, you use your - ANSWER-BCD
Buoyancy control allows you to: - ANSWER--Descend and ascend at a slow, controlled
rate.
Stop a descent or ascent and maintain your depth with little effort.
Float comfortably on the surface.
Save energy and avoid harming sensitive aquatic organisms by swimming neutrally
buoyant and controlling your movements.
Maintain the underwater visibility by helping you not stir up the bottom.
Enjoy one of the sensations unique to diving - "weightlessness."
four equipment systems in the scuba kit - ANSWER-1. BCD - Buoyancy control device -
adjusts buoyancy as you dive
2. regulator -delivers breathing air at surrounding pressure
3. cylinder
4. weight system
