SSI OPEN WATER DIVER FINAL
COMPREHENSIVE STUDY GUIDE
QUESTIONS AND VERIFIED ANSWERS FULL
REVIEW
●● As you descend in water, the pressure
Answer: increases
●● A depth change of 10 metres/33 feet causes a pressure change of
Answer: 1 bar/ata (atmosphere)
●● 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)
●● A balloon fully inflated and sealed at 10 metres/33 feet, would
probably ______ during ascent to the surface
Answer: burst
●● A squeeze is caused by
Answer: a pressure imbalance between the surrounding pressure and an
air space
,●● Equalization is the process of
Answer: adding air to an air space
●● The most important rule in scuba diving is to
Answer: breathe continuously and never hold your breath
●● During ascent I feel discomfort in my ears. I should
Answer: stop, descend slightly, and allow trapped air to work its way out
●● 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
●● The most efficient way to breathe dense air underwater is to breathe
Answer: deeply and slowly
●● Buoyancy
Answer: a force that pushes an object in water upward
●● Salt water causes more buoyancy than fresh water because it is
_____ dense and weighs _____
Answer: more
, ●● When I descend, my buoyancy tends to ________. When I ascend, it
tends to _______
Answer: decrease, increase
●● The three most important considerations in choosing scuba
equipment are suitability, fit, and
Answer: comfort
●● The two basic fin styles are __________ fins
Answer: adjustable and full-foot
●● My primary considerations when choosing fins are fit and
Answer: blade size
●● BCD (buoyancy control device)
Answer: holds your kit together and allows you to adjust buoyancy
throughout the dive
●● Regulator
Answer: delivers breathing air at the surrounding pressure when you
inhale and directs exhaled air into the air
COMPREHENSIVE STUDY GUIDE
QUESTIONS AND VERIFIED ANSWERS FULL
REVIEW
●● As you descend in water, the pressure
Answer: increases
●● A depth change of 10 metres/33 feet causes a pressure change of
Answer: 1 bar/ata (atmosphere)
●● 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)
●● A balloon fully inflated and sealed at 10 metres/33 feet, would
probably ______ during ascent to the surface
Answer: burst
●● A squeeze is caused by
Answer: a pressure imbalance between the surrounding pressure and an
air space
,●● Equalization is the process of
Answer: adding air to an air space
●● The most important rule in scuba diving is to
Answer: breathe continuously and never hold your breath
●● During ascent I feel discomfort in my ears. I should
Answer: stop, descend slightly, and allow trapped air to work its way out
●● 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
●● The most efficient way to breathe dense air underwater is to breathe
Answer: deeply and slowly
●● Buoyancy
Answer: a force that pushes an object in water upward
●● Salt water causes more buoyancy than fresh water because it is
_____ dense and weighs _____
Answer: more
, ●● When I descend, my buoyancy tends to ________. When I ascend, it
tends to _______
Answer: decrease, increase
●● The three most important considerations in choosing scuba
equipment are suitability, fit, and
Answer: comfort
●● The two basic fin styles are __________ fins
Answer: adjustable and full-foot
●● My primary considerations when choosing fins are fit and
Answer: blade size
●● BCD (buoyancy control device)
Answer: holds your kit together and allows you to adjust buoyancy
throughout the dive
●● Regulator
Answer: delivers breathing air at the surrounding pressure when you
inhale and directs exhaled air into the air
