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Padi Open Water Exam/80 Complete Questions with Accurate Answers
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Padi Open Water Exam/80 CompleteQuestions with Accurate Answers
What is the most important rule of scuba diving? - -Do not hold your breath
Breathe continuously
-What are the consequences of breaking the most important rule in scuba
diving? - -Lung over expansion
severe injuries, death
-What is a reverse block? - -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? - -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? - -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? - -take
deep, slow breaths
-Why does a diver need a mask? - -creates an air space, so your eyes can
focus
-As you go deeper, you consume air from your scuba cylinder _____ - -faster
-Why does the mask need to enclose your nose? - -to equalize during your
descent to prevent mask squeeze
-What 6 features should you look for in a mask? - -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? - -fit and
comfort
, -How do you prepare a new mask for use? - -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? - -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? - -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? - -1) large diameter
(bore)
2) Not excessively long
3) Designed with smooth, rounded bends
-How do you prepare a snorkel for use? - -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? - -provide a large surface area, so leg muscles
can move through the water
-What are the 2 basic fin styles? - -1) adjustable strap - open heel
2) full-foot
-What blade design features may enhance a fin's performance? - -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? - -full foot- no preparation
adjustable strap- need to adjust
-What 3 considerations do you have when buying a specific type of fin? - -
size
physical ability
where you plan to dive
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