Padi Open Water Questions and
Answers 100% Correct.(Graded A+)
What is the most important rule of scuba diving? - ANSWER-Do not hold your breath
Breathe continuously
What are the consequences of breaking the most important rule in scuba diving? -
ANSWER-Lung over expansion
severe injuries, death
What is a reverse block? - 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? - 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? - 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? - ANSWER-take deep,
slow breaths
Why does a diver need a mask? - ANSWER-creates an air space, so your eyes can
focus
As you go deeper, you consume air from your scuba cylinder _____ - ANSWER-faster
Why does the mask need to enclose your nose? - ANSWER-to equalize during your
descent to prevent mask squeeze
What 6 features should you look for in a mask? - 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? - ANSWER-fit and
comfort
, How do you prepare a new mask for use? - 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? - ANSWER-1) rinse
thoroughly with fresh H2o
2) keep out of direct sunlight
3) store in a cool, dry place
Why does a diver need a snorkel? - ANSWER-1) lets you rest or swim with your face in
the water, without wasting cylinder air
2) makes it easier to breathe when the surface is rough
3) makes it easier to swim back, when you are running low on air
What 3 features does an easy-breathing snorkel have? - ANSWER-1) large diameter
(bore)
2) Not excessively long
3) Designed with smooth, rounded bends
How do you prepare a snorkel for use? - ANSWER-1) attach it to the left of your mask
2) Adjust snorkel keeper, so the top of the snorkel sits at the crown of your head with
the mouthpiece in place
3) remains in your mouth with a relaxed jaw
Why does a diver need fins? - ANSWER-provide a large surface area, so leg muscles
can move through the water
What are the 2 basic fin styles? - ANSWER-1) adjustable strap - open heel
2) full-foot
What blade design features may enhance a fin's performance? - ANSWER-Ribs- add
rigidity, act as vertical stabilizers
Vents- reduce resistance to fin and increase efficiency
channels- increase efficiency by guiding water smoothly
split- designed to thrust water straight back for max efficiency
How do you prepare new fins for use? - ANSWER-full foot- no preparation
adjustable strap- need to adjust
What 3 considerations do you have when buying a specific type of fin? - ANSWER-size
physical ability
where you plan to dive
Why does a diver need a BCD? - ANSWER-allows you to regulate your buoyancy
underwater
provides positive buoyancy for resting
Answers 100% Correct.(Graded A+)
What is the most important rule of scuba diving? - ANSWER-Do not hold your breath
Breathe continuously
What are the consequences of breaking the most important rule in scuba diving? -
ANSWER-Lung over expansion
severe injuries, death
What is a reverse block? - 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? - 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? - 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? - ANSWER-take deep,
slow breaths
Why does a diver need a mask? - ANSWER-creates an air space, so your eyes can
focus
As you go deeper, you consume air from your scuba cylinder _____ - ANSWER-faster
Why does the mask need to enclose your nose? - ANSWER-to equalize during your
descent to prevent mask squeeze
What 6 features should you look for in a mask? - 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? - ANSWER-fit and
comfort
, How do you prepare a new mask for use? - 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? - ANSWER-1) rinse
thoroughly with fresh H2o
2) keep out of direct sunlight
3) store in a cool, dry place
Why does a diver need a snorkel? - ANSWER-1) lets you rest or swim with your face in
the water, without wasting cylinder air
2) makes it easier to breathe when the surface is rough
3) makes it easier to swim back, when you are running low on air
What 3 features does an easy-breathing snorkel have? - ANSWER-1) large diameter
(bore)
2) Not excessively long
3) Designed with smooth, rounded bends
How do you prepare a snorkel for use? - ANSWER-1) attach it to the left of your mask
2) Adjust snorkel keeper, so the top of the snorkel sits at the crown of your head with
the mouthpiece in place
3) remains in your mouth with a relaxed jaw
Why does a diver need fins? - ANSWER-provide a large surface area, so leg muscles
can move through the water
What are the 2 basic fin styles? - ANSWER-1) adjustable strap - open heel
2) full-foot
What blade design features may enhance a fin's performance? - ANSWER-Ribs- add
rigidity, act as vertical stabilizers
Vents- reduce resistance to fin and increase efficiency
channels- increase efficiency by guiding water smoothly
split- designed to thrust water straight back for max efficiency
How do you prepare new fins for use? - ANSWER-full foot- no preparation
adjustable strap- need to adjust
What 3 considerations do you have when buying a specific type of fin? - ANSWER-size
physical ability
where you plan to dive
Why does a diver need a BCD? - ANSWER-allows you to regulate your buoyancy
underwater
provides positive buoyancy for resting
