Padi Open Water EXAM Questions And Correct
Answers (Verified Answers) 2026/2027
What is the most important rule of scuba diving? - CORRECT ANSWER -Do not
hold your breath
Breathe continuously
What are the consequences of breaking the most important rule in scuba diving? -
CORRECT ANSWER -Lung over expansion
severe injuries, death
What is a reverse block? - CORRECT ANSWER -pain and discomfort caused by
expanding air trapped inside an air space during ascent
What should you do if you feel discomfort during ascent due to air expansion in
the ears, sinuses, stomach, intestines, or teeth? - CORRECT ANSWER -slow or
stop ascent
descend a metre/few feet and give the trapped air time to work its way out
How does increasing depth affect how long your air supply lasts? - CORRECT
ANSWER -the deeper you descend, the denser the air becomes.
It takes 4X the effort to breathe twice as fast
What's the most efficient way to breathe dense air underwater? - CORRECT
ANSWER -take deep, slow breaths
, Why does a diver need a mask? - CORRECT ANSWER -creates an air space, so
your eyes can focus
As you go deeper, you consume air from your scuba cylinder _____ - CORRECT
ANSWER -faster
Why does the mask need to enclose your nose? - CORRECT ANSWER -to
equalize during your descent to prevent mask squeeze
What 6 features should you look for in a mask? - CORRECT ANSWER -1)
tempered glass
2) comfortable skirt with a good seal
3) nose or finger pockets
4) low profile
5) Adjustable strap that can be locked in place
6) wide field of vision
When buying a mask, what are the 2 most important features? - CORRECT
ANSWER -fit and comfort
How do you prepare a new mask for use? - CORRECT ANSWER -use a soft cloth
with a low abrasion cleaner to remove the protective chemical
adjust the strap
What 3 general maintenance procedures apply to mask care? - CORRECT
ANSWER -1) rinse thoroughly with fresh H2o
Answers (Verified Answers) 2026/2027
What is the most important rule of scuba diving? - CORRECT ANSWER -Do not
hold your breath
Breathe continuously
What are the consequences of breaking the most important rule in scuba diving? -
CORRECT ANSWER -Lung over expansion
severe injuries, death
What is a reverse block? - CORRECT ANSWER -pain and discomfort caused by
expanding air trapped inside an air space during ascent
What should you do if you feel discomfort during ascent due to air expansion in
the ears, sinuses, stomach, intestines, or teeth? - CORRECT ANSWER -slow or
stop ascent
descend a metre/few feet and give the trapped air time to work its way out
How does increasing depth affect how long your air supply lasts? - CORRECT
ANSWER -the deeper you descend, the denser the air becomes.
It takes 4X the effort to breathe twice as fast
What's the most efficient way to breathe dense air underwater? - CORRECT
ANSWER -take deep, slow breaths
, Why does a diver need a mask? - CORRECT ANSWER -creates an air space, so
your eyes can focus
As you go deeper, you consume air from your scuba cylinder _____ - CORRECT
ANSWER -faster
Why does the mask need to enclose your nose? - CORRECT ANSWER -to
equalize during your descent to prevent mask squeeze
What 6 features should you look for in a mask? - CORRECT ANSWER -1)
tempered glass
2) comfortable skirt with a good seal
3) nose or finger pockets
4) low profile
5) Adjustable strap that can be locked in place
6) wide field of vision
When buying a mask, what are the 2 most important features? - CORRECT
ANSWER -fit and comfort
How do you prepare a new mask for use? - CORRECT ANSWER -use a soft cloth
with a low abrasion cleaner to remove the protective chemical
adjust the strap
What 3 general maintenance procedures apply to mask care? - CORRECT
ANSWER -1) rinse thoroughly with fresh H2o
