PADI Open Water Diver Certification EXAM |
ACTUAL exam: QUESTION AND ANSWERS
UPDATED 2026 LATEST
Save
Terms in this set (167)
SCUBA Self contained underwater breathing apparatus
What is the pressure change for 1 bar/1 ata/1 atmosphere
each 10m/33ft of depth change?
What is the relationship between The deeper you go in water, the more the
my depth in water and the pressure increases
pressure? Pressure is expressed as the weight of air
What is the relationship between As pressure increases, the gas volume decreases
pressure, and the volume and the and the gas density increases
density of air?
If I take a volume of air from one Volume will be 1/ata#
depth to another depth, how much Density will be ata#
will the volume and density
change?
What 3 major body air spaces does Ears, sinuses, mask
increasing pressure affect as I
descend?
, What is a "squeeze"? The discomfort caused by pressure imbalance
pulling tissue into the air space
What is "equalization"? The addition of air to your air spaces as you
descend
How do I equalize as I descend? For ears and sinuses, pinch your nose and blow
gently, or wiggle your jaw and swallow
For mask, blow into it with nose
How often should I equalize? Every meter/few feet, BEFORE you feel
discomfort
What should I do if I can't equalize? Stop your descent, signal problem and point to
your ear, ascend a bit, and try again
What can happen if I don't or can't Fluid can rupture the eardrum
equalize gently and keep Bruising around the face can occur
descending?
Why does a congestion from a cold Congestion might block normal air flow, making
or allergy temporarily keep me equalization difficult or impossible
from diving?
Why should I never dive with They create air spaces that you can't equalize
earplugs?
What other body air spaces are In filled teeth - go to a dentist
affected by increasing pressure? In a dry suit - learn from an instructor
How do I equalize them? Lungs - breathe normally and continuously
What is the most important rule in Breathe continuously and never hold your breath
scuba diving?
ACTUAL exam: QUESTION AND ANSWERS
UPDATED 2026 LATEST
Save
Terms in this set (167)
SCUBA Self contained underwater breathing apparatus
What is the pressure change for 1 bar/1 ata/1 atmosphere
each 10m/33ft of depth change?
What is the relationship between The deeper you go in water, the more the
my depth in water and the pressure increases
pressure? Pressure is expressed as the weight of air
What is the relationship between As pressure increases, the gas volume decreases
pressure, and the volume and the and the gas density increases
density of air?
If I take a volume of air from one Volume will be 1/ata#
depth to another depth, how much Density will be ata#
will the volume and density
change?
What 3 major body air spaces does Ears, sinuses, mask
increasing pressure affect as I
descend?
, What is a "squeeze"? The discomfort caused by pressure imbalance
pulling tissue into the air space
What is "equalization"? The addition of air to your air spaces as you
descend
How do I equalize as I descend? For ears and sinuses, pinch your nose and blow
gently, or wiggle your jaw and swallow
For mask, blow into it with nose
How often should I equalize? Every meter/few feet, BEFORE you feel
discomfort
What should I do if I can't equalize? Stop your descent, signal problem and point to
your ear, ascend a bit, and try again
What can happen if I don't or can't Fluid can rupture the eardrum
equalize gently and keep Bruising around the face can occur
descending?
Why does a congestion from a cold Congestion might block normal air flow, making
or allergy temporarily keep me equalization difficult or impossible
from diving?
Why should I never dive with They create air spaces that you can't equalize
earplugs?
What other body air spaces are In filled teeth - go to a dentist
affected by increasing pressure? In a dry suit - learn from an instructor
How do I equalize them? Lungs - breathe normally and continuously
What is the most important rule in Breathe continuously and never hold your breath
scuba diving?
