2026/2027 Updated Verified
As a newly certified PADI Open Water Diver, I will be trained to dive
with buddy as deep as
18 metres/60 feet
As you descend in water, the pressure
increases
A depth change of 10 metres/33 feet causes a pressure change
of
1 bar/ata (atmosphere)
,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)
A balloon fully inflated and sealed at 10 metres/33 feet, would
probably ______ during ascent to the surface
burst
A squeeze is caused by
a pressure imbalance between the surrounding pressure and an
air space
,Equalization is the process of
adding air to an air space
The most important rule in scuba diving is to
breathe continuously and never hold your breath
During ascent I feel discomfort in my ears. I should
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
faster than
The most efficient way to breathe dense air underwater is to
breathe
deeply and slowly
Buoyancy
a force that pushes an object in water upward