Complete Questions and Guide Answers
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1. As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as
Answer: 18 metres/60 feet
2. As you descend in water, the pressure
Answer: increases
3. A depth change of 10 metres/33 feet causes a pressure change of
Answer: 1 bar/ata (atmosphere)
4. if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be
Answer: 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
Answer: burst
6. A squeeze is caused by
Answer: a pressure imbalance between the surrounding pressure and an air space
,7. Equalization is the process of
Answer: adding air to an air space
8. The most important rule in scuba diving is to
Answer: breathe continuously and never hold your breath
9. During ascent I feel discomfort in my ears. I should
Answer: 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
Answer: faster than
11. The most efficient way to breathe dense air underwater is to breathe
Answer: deeply and slowly
12. Buoyancy
Answer: a force that pushes an object in water upward
13. Salt water causes more buoyancy than fresh water because it is dense
and weighs
Answer: more
14. When I descend, my buoyancy tends to . When I ascend, it tends to
, Answer: decrease, increase
15. The three most important considerations in choosing scuba equipment are
suitability, fit, and
Answer: comfort
16. The two basic fin styles are fins
Answer: adjustable and full-foot
17. My primary considerations when choosing fins are fit and
Answer: blade size
18. BCD (buoyancy control device)
Answer: holds your kit together and allows you to adjust buoyancy through- out the dive
19. Regulator
Answer: delivers breathing air at the surrounding pressure when you inhale and directs exhaled air into the air