PADI Open Water Diver – Final Exam & Study Guide
Complete Questions and Guide Answers
100% Verified Graded A+
1. As you descend in water the pressure
Answer: increases
2. A depth change of 10 meters/33 feet causes a pressure change of
Answer: 2 bar/ata
3. if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be
Answer: 2 liters
4. The density of the air at 20 meters/66 feet would be the density at the
surface of
Answer: three times
5. A balloon fully inflated and sealed at 10 meters/33 feet, would probably
during ascent to the surface.
Answer: expand/burst
6. As I descend, increasing pressure affects my
, Answer: mask, ears, sinuses
7. A squeeze is caused by
Answer: a pressure imbalance between the surrounding pressure and an air space
8. Equalization is the process of
Answer: adding air to an air space
9. I should equalize
Answer: before i feel pain or discomfort
10. I'm descending and discovering I can't equalize. The first thing I would do is
Answer: stop my descent and signal my buddy/the instructor
11. On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I
should
Answer: cancel the dive until I'm well
12. When scuba diving, normal breathing keeps your lungs equalized to the
surrounding pressure (T/F)
Answer: True
13. The most important rule in scuba diving is to
Answer: breathe continuously and never hold your breath
14. Failure to follow the most important rule in scuba diving can cause severe lung
,overexpansion injuries, which can result in paralysis or death (T/F)
Answer: true
15. During ascent I feel discomfort in my ears. I should
Answer: stop, descend slightly and allow trapped air to work its way out
16. Depth 0m/0ft what is the pressure, volume and density
Answer: 1bar/ata,1volume,1xdensity
17. Depth 10m/33ft what is the pressure, volume and density
Answer: 2 bar/ata,1/2 volume,2x density
18. Depth 20m/66ft what is the pressure, volume and density
Answer: 3 bar/ata,1/3 volume,3x density
19. Depth 30m/99ft what is the pressure, volume and density
Answer: 4 bar/ata,1/4 volume,4x density
, 20. As I descend, I need to equalize air spaces. Which of the following are
accepted ways of equalizing my ears?
a. Block my nose and attempt to gently blow through it.
b. Swallow and wiggle the jaw from side to side
c. Block my nose and blow forcefully for an extended period
Answer: Block my nose and attempt to gently blow through it + swallow and wiggle the jaw from side to side
21. I should equalize
a. early and often, before I feel discomfort
b. when I begin to feel discomfort
c. only if I experience pain
Answer: early and often, before I feel discomfort
22. I should not dive with a cold, nor use medications to dive with a cold. True or False
Answer: True
23. Failure to follow the most important rule in scuba diving can cause serious lung
overexpansion (lung rupture) injuries, which in turn can cause paralysis and death. True
or False
Answer: True
Complete Questions and Guide Answers
100% Verified Graded A+
1. As you descend in water the pressure
Answer: increases
2. A depth change of 10 meters/33 feet causes a pressure change of
Answer: 2 bar/ata
3. if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be
Answer: 2 liters
4. The density of the air at 20 meters/66 feet would be the density at the
surface of
Answer: three times
5. A balloon fully inflated and sealed at 10 meters/33 feet, would probably
during ascent to the surface.
Answer: expand/burst
6. As I descend, increasing pressure affects my
, Answer: mask, ears, sinuses
7. A squeeze is caused by
Answer: a pressure imbalance between the surrounding pressure and an air space
8. Equalization is the process of
Answer: adding air to an air space
9. I should equalize
Answer: before i feel pain or discomfort
10. I'm descending and discovering I can't equalize. The first thing I would do is
Answer: stop my descent and signal my buddy/the instructor
11. On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I
should
Answer: cancel the dive until I'm well
12. When scuba diving, normal breathing keeps your lungs equalized to the
surrounding pressure (T/F)
Answer: True
13. The most important rule in scuba diving is to
Answer: breathe continuously and never hold your breath
14. Failure to follow the most important rule in scuba diving can cause severe lung
,overexpansion injuries, which can result in paralysis or death (T/F)
Answer: true
15. During ascent I feel discomfort in my ears. I should
Answer: stop, descend slightly and allow trapped air to work its way out
16. Depth 0m/0ft what is the pressure, volume and density
Answer: 1bar/ata,1volume,1xdensity
17. Depth 10m/33ft what is the pressure, volume and density
Answer: 2 bar/ata,1/2 volume,2x density
18. Depth 20m/66ft what is the pressure, volume and density
Answer: 3 bar/ata,1/3 volume,3x density
19. Depth 30m/99ft what is the pressure, volume and density
Answer: 4 bar/ata,1/4 volume,4x density
, 20. As I descend, I need to equalize air spaces. Which of the following are
accepted ways of equalizing my ears?
a. Block my nose and attempt to gently blow through it.
b. Swallow and wiggle the jaw from side to side
c. Block my nose and blow forcefully for an extended period
Answer: Block my nose and attempt to gently blow through it + swallow and wiggle the jaw from side to side
21. I should equalize
a. early and often, before I feel discomfort
b. when I begin to feel discomfort
c. only if I experience pain
Answer: early and often, before I feel discomfort
22. I should not dive with a cold, nor use medications to dive with a cold. True or False
Answer: True
23. Failure to follow the most important rule in scuba diving can cause serious lung
overexpansion (lung rupture) injuries, which in turn can cause paralysis and death. True
or False
Answer: True
