PADI Open Water Diver Final Exam
1. As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as: 18 metres/60
feet
2. As you descend in water, the pressure: increases
3. A depth change of 10 metres/33 feet causes a pressure change of: 1 bar/ata (atmosphere)
4. if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be: 2 litres (the density of the air
would be three times the density at the surface)
5. A balloon fully inflated and sealed at 10 metres/33 feet, would probably
during ascent to the surface: burst
6. A squeeze is caused by: a pressure imbalance between the surrounding pres- sure and an air space
7. Equalization is the process of: adding air to an air space
8. The most important rule in scuba diving is to: breathe continuously and never hold your breath
9. During ascent I feel discomfort in my ears. I should: stop, descend slightly, and allow trapped air to work its way
out
10. My buddy and I descend to 12 metres/40 feet. I would expect to use my air
at 6 metres/20 feet: faster than
11. The most efficient way to breathe dense air underwater is to breathe: -
deeply and slowly
12. Buoyancy: a force that pushes an object in water upward
13. Salt water causes more buoyancy than fresh water because it is
dense and weighs : more
14. When I descend, my buoyancy tends to . When I ascend, it tends to
: decrease, increase
15. The three most important considerations in choosing scuba equipment are suitability, fit, and: comfort
16. The two basic fin styles are fins: adjustable and full-foot
17. My primary considerations when choosing fins are fit and: blade size
18. BCD (buoyancy control device): holds your kit together and allows you to adjust buoyancy throughout the
dive
19. Regulator: delivers breathing air at the surrounding pressure when you inhale and directs exhaled air into the air
20. Cylinder: holds the high-pressure breathing air supplied by your regulator dur- ing the dive
21. Weight System: holds lead weight to counteract the positive buoyancy of your body and some of your
equipment, with a mechanism for dropping some or all the weight in an emergency
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, 22. The five components that make up a BCD include: an inflatable bladder, a cylinder band and harness/jacket, an
LPI (low-pressure inflator) mechanism, an overpressure/quick exhaust valves, and a weight system
23. LPI mechanism: inflates the BCD with air from my scuba cylinder
24. Burst disk: a safety device that relieves accidental overpressure by releasing air before reaching the pressure at
which the cylinder would fail
25. scuba cylinders require pressure testing and visual inspection
: every 2-5 years, annually
26. The most important feature in my weight system is its: quick release
27. Trim means having the right of weight: distribution
28. Failure to follow the most important rule in scuba diving can cause serious lung overexpansion injuries, which
in turn can cause paralysis and death: true
29. An object that is neutrally bouyant in fresh water will in salt water: -
float
30. Underwater objects appear: larger and/or closer
31. Sound travels about 4 times in water than in air, making it difficult to determine its
source: faster
32. To move efficiently as a diver, I should move: slowly and steadily
33. Trim is important for streamlining because: poor trim raises or lowers my feet, causing drag
34. Overexertion results from: a prolonged increased effort
35. Buddy Predive Safety Check: Begin With Review And Friend BCD, Weight, Releases, Air,
Final Check
36. If my buddy and I get separated, the general procedure is to: look for each other for no more than a minute,
then reunite on the surface
37. My buddy and I are planning a boat dive with the same type cylinders filled to 200 bar/3000 psi. Due to
conditions, we are planning very conservatively. We agree on 60 bar/800 psi for our reserve. We agree that we also
want an additional 30 bar/500 psi for our ascent and safety stop. This means we should begin our ascent when
either of our SPGs reads: 90 bar/1300 psi
38. My buddy and I have just started our descent. I begin equalizing: immedi- ately, as soon as my head goes
underwater
39. During my descent, to control my buoyancy I add air to my BCD: in small amounts, frequently
40. To start my ascent, I should: swim up gently
41. To control my buoyancy while ascending, I should: vent my BCD with in small amounts frequently
42. A safety stop is a stop between and for three to five
minutes: 6 m/20 ft, 3 m/10 ft
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1. As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as: 18 metres/60
feet
2. As you descend in water, the pressure: increases
3. A depth change of 10 metres/33 feet causes a pressure change of: 1 bar/ata (atmosphere)
4. if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be: 2 litres (the density of the air
would be three times the density at the surface)
5. A balloon fully inflated and sealed at 10 metres/33 feet, would probably
during ascent to the surface: burst
6. A squeeze is caused by: a pressure imbalance between the surrounding pres- sure and an air space
7. Equalization is the process of: adding air to an air space
8. The most important rule in scuba diving is to: breathe continuously and never hold your breath
9. During ascent I feel discomfort in my ears. I should: stop, descend slightly, and allow trapped air to work its way
out
10. My buddy and I descend to 12 metres/40 feet. I would expect to use my air
at 6 metres/20 feet: faster than
11. The most efficient way to breathe dense air underwater is to breathe: -
deeply and slowly
12. Buoyancy: a force that pushes an object in water upward
13. Salt water causes more buoyancy than fresh water because it is
dense and weighs : more
14. When I descend, my buoyancy tends to . When I ascend, it tends to
: decrease, increase
15. The three most important considerations in choosing scuba equipment are suitability, fit, and: comfort
16. The two basic fin styles are fins: adjustable and full-foot
17. My primary considerations when choosing fins are fit and: blade size
18. BCD (buoyancy control device): holds your kit together and allows you to adjust buoyancy throughout the
dive
19. Regulator: delivers breathing air at the surrounding pressure when you inhale and directs exhaled air into the air
20. Cylinder: holds the high-pressure breathing air supplied by your regulator dur- ing the dive
21. Weight System: holds lead weight to counteract the positive buoyancy of your body and some of your
equipment, with a mechanism for dropping some or all the weight in an emergency
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, 22. The five components that make up a BCD include: an inflatable bladder, a cylinder band and harness/jacket, an
LPI (low-pressure inflator) mechanism, an overpressure/quick exhaust valves, and a weight system
23. LPI mechanism: inflates the BCD with air from my scuba cylinder
24. Burst disk: a safety device that relieves accidental overpressure by releasing air before reaching the pressure at
which the cylinder would fail
25. scuba cylinders require pressure testing and visual inspection
: every 2-5 years, annually
26. The most important feature in my weight system is its: quick release
27. Trim means having the right of weight: distribution
28. Failure to follow the most important rule in scuba diving can cause serious lung overexpansion injuries, which
in turn can cause paralysis and death: true
29. An object that is neutrally bouyant in fresh water will in salt water: -
float
30. Underwater objects appear: larger and/or closer
31. Sound travels about 4 times in water than in air, making it difficult to determine its
source: faster
32. To move efficiently as a diver, I should move: slowly and steadily
33. Trim is important for streamlining because: poor trim raises or lowers my feet, causing drag
34. Overexertion results from: a prolonged increased effort
35. Buddy Predive Safety Check: Begin With Review And Friend BCD, Weight, Releases, Air,
Final Check
36. If my buddy and I get separated, the general procedure is to: look for each other for no more than a minute,
then reunite on the surface
37. My buddy and I are planning a boat dive with the same type cylinders filled to 200 bar/3000 psi. Due to
conditions, we are planning very conservatively. We agree on 60 bar/800 psi for our reserve. We agree that we also
want an additional 30 bar/500 psi for our ascent and safety stop. This means we should begin our ascent when
either of our SPGs reads: 90 bar/1300 psi
38. My buddy and I have just started our descent. I begin equalizing: immedi- ately, as soon as my head goes
underwater
39. During my descent, to control my buoyancy I add air to my BCD: in small amounts, frequently
40. To start my ascent, I should: swim up gently
41. To control my buoyancy while ascending, I should: vent my BCD with in small amounts frequently
42. A safety stop is a stop between and for three to five
minutes: 6 m/20 ft, 3 m/10 ft
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