As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as -
ANSWER 18 metres/60 feet
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 - AN-
SWER 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 as-
cent to the surface - ANSWER burst
A squeeze is caused by - ANSWER a pressure imbalance between the surrounding pres-
sure 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
1
, My buddy and I descend to 12 metres/40 feet. I would expect to use my air _____ at 6 me-
tres/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 _______ - AN-
SWER 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 ad-
just buoyancy throughout the dive
Regulator - ANSWER delivers breathing air at the surrounding pressure when you inhale
and directs exhaled air into the air
Cylinder - ANSWER holds the high-pressure breathing air supplied by your regulator dur-
ing the dive
2
ANSWER 18 metres/60 feet
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 - AN-
SWER 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 as-
cent to the surface - ANSWER burst
A squeeze is caused by - ANSWER a pressure imbalance between the surrounding pres-
sure 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
1
, My buddy and I descend to 12 metres/40 feet. I would expect to use my air _____ at 6 me-
tres/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 _______ - AN-
SWER 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 ad-
just buoyancy throughout the dive
Regulator - ANSWER delivers breathing air at the surrounding pressure when you inhale
and directs exhaled air into the air
Cylinder - ANSWER holds the high-pressure breathing air supplied by your regulator dur-
ing the dive
2
