PADI training for scuba diving
A depth change of 10 metres/33 feet causes a pressure change of
1 bar/ata
If you take 6 litres of air from the surface to 20 metres/66 feet, the volume will be _____ litres
2
As a newly certified PADI Open Water Diver, you'll be trained to dive with a buddy as deep as
60 ft/18 meters
My buddy and I are planning a boat dive with the same type cylinders filled to 200 bar/3000 psi. Due to conditions, we are planning very conservatively. We agree on 60 bar/800 psi for our reserve. We agree that we also want an additional 30 bar/500 psi for our ascent and safety stop. This means we should begin our ascent when either of our SPGs reads
90 bar/1300 PSI
To control my buoyancy, normally I will use my weight system and my
BCD
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. What should you do
Cancel the dive until you are well
When I conduct a predive safety check, the "A" in the recall phrase includes
Confirming adequate air pressure for the dive
After 30 minutes underwater, I start to feel a bit too cool and uncomfortable. I should...
End the dive
While diving, I start to feel cool and shortly begin to shiver uncontrollably. I should
End the dive and seek warmth
As my buddy and I kit up, the normal practice is to be entirely independent. Helping each other is discouraged. True or False
False
From among masks that fit me, I should choose a mask that fits as far away from my face as possible.-True or False
False
I would never find it necessary to ascend without a reference.- True or False
False
I'm descending in open water with my buddies. After confirming they are ready, the next step is to signal "descend" and slowly deflate my BCD.- True or False
False
My SPG is always part of my dive computer.-True or False
False
Salt water causes more buoyancy than fresh water because it is less dense and weighs less-True or False
False
There's no real benefit to choosing the components of my scuba kit as an integrated package.-True or False
False
My buddy and I descend to 40 feet. I would expect to use my air __________ at 6 metres/20 feet
Faster than
While my buddy and I are diving, a motorboat passes by about 300 metres/yards away. Which of the following statements is true?
I may have difficulty determining where the boat is based on the sound.
My buddy and I have just started our descent. I begin equalizing
Immediately as soon as my head goes underwater
During my descent, to control my buoyancy I add air to my BCD
In small amounts, frequently
Before each use, I should__________________my equipment.
Inspect
Underwater objects appear...
Larger and closer
My buddy has a bright red shoulder patch on his wet suit. If we're diving together in very clear water on a sunny day, at 12 metres/40 feet I would expect the patch to appear
Less red than at the surface
My sunglasses case falls out of my pocket into the water, but fortunately, it floats so I retrieve it. I would say my sunglasses case is _______ buoyant.
Positivly
One method of airway control is to inhale slowly. I can also ________________ to help breathe past small amounts of water in my regulator.
Raise my tounge
While scuba diving, I should breathe
Slowly and deeply
At the surface, it's a good habit to keep my mask on and my snorkel or regulator in my mouth because it helps me deal with difficulties more effectively.- True or False
True
Because water is denser than air, it takes more effort to move through water. True or False
True
Before starting my ascent, I should check my dive computer to be sure I'm within its limits.- True or False
True
Failure to follow the most important rule in scuba diving can cause severe lung overexpansion injuries, which can result in paralysis or death-True or False
True
Fins provide a large surface area so my legs can push against the water effectively.-True or False
True
Getting the service my gear needs may be a consideration when choosing equipment.-True or False
True
I chill faster in water than in air of the same temperature because water absorbs more heat than air does. True or False
True
I equalize gently because an extended, forceful equalization can cause permanent damage to my ears and hearing- True or False
True
I must be able to quickly release enough weight to float reliably in an emergency, but not necessarily all my weight.-True or False
True
If I'm tired, have labored breathing and feel air-starved and anxious during a dive, it is likely I am experiencing overexertion. True or False
True
In recreational diving, the buddy system means diving with another diver or divers in a team that provides assistance and safety benefits-True or False
True
It is important to master buoyancy control because it affects almost everything I do in and underwater-True or False
True
My BCD should have adequate capacity to easily float my equipment and me at the surface.-True or False
True
My body responds to anxiety with increased breathing, but slow breathing helps reduce anxiety-True or False
True
My buddies and I are planning a dive. Among other things, we should address how to enter and exit the water, the maximum depth and time, when to turn the dive and what to do if we get separated. True or False
True
My local dive pro will usually set up my regulator components.-True or False
True
One reason for wearing more than one weight system is that it is sometimes easier than handling a single, heavier one.-True or False
True
Regulators need periodic overhauls, typically every year to two years.- True or False
True
Snorkels are standard equipment for scuba diving because they allow me to breathe with my face in the water, or in rough conditions, without wasting my scuba air, especially when I have little scuba air remaining.-True or False
True
Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the way when not in use. True or False
True
Streamlining benefits me as a diver because it reduces drag, which helps me save energy. True or False
True
The LPI mechanism inflates the BCD with air from my scuba cylinder.-True or False
True
The most important rule in scuba diving is to breathe continuously and never hold your breath-True or False
True
To prepare adjustable fins, I should adjust the straps wearing my wet suit boots.- True or False
True
When diving in a new dive environment, two benefits of seeking an orientation, supervision and/or additional training are that it helps me avoid problems and that it helps me enjoy the dive more- True or False
True
When scuba diving, normal breathing keeps your lungs equalized to the surrounding pressure-True or False
True
My buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent with recommended BCD care?
Yes
a squeeze is caused by
a pressure imbalance between the surrounding pressure and an air space
over exhaustion comes from...
a prolonged increased effort.
I want to adjust my mask so the straps fit
above my ears, over the crown of my head.
Equalzation is the process of
adding air into an air space
The two basic fin styles are ____________ fins
adjustable and full-foot
When choosing an alternate air source, a primary consideration involves deciding
between independence and simplicity.
My primary considerations when choosing fins are fit and
blade size
A balloon fully inflated and sealed at 10 metres/33 feet, would probably _______ during ascent to the surface
burst
Accessory weights
can help you adjust your trim.
The three most important considerations in choosing scuba equipmentare suitability, fit and
comfort
Water's density works best for me when I use the skill of
controlling my buoyancy
As I descend while wearing a wet suit, my buoyancy will tend to
decrease
When I descend, my buoyancy tends to _________. When I ascend, it tends to __________.
decrease, increase
The most efficient way to breathe dense air underwater is to breathe...
deeply and slowly
Trim means having the right ________ of weight.
distribution
The most important consideration when choosing a regulator is
ease of breathing
My mask encloses my nose so I can
equalize the mask
Scuba cylinders require pressure testing __________ and visual inspection _________.
every 2-5 years, annually
My BCD should fit...
fit snugly but not restrict breathing when fully inflated. Submit
as you descend the water pressure
increases
My buddies and I plan to enter the water, but swim on the surface to a descent point about 50 metres/yards away. A primary reason we will do this is because.....
it saves our cylinder air for the dive
If my buddy and I get separated , the general procedure is to...?
look for each other for no more than a minute, then reunite on the surface.
As I descend increasing pressure effects my
mask, ears, and sinuses
PADI courses are performance-based. This means that to be certified, you must
meet specific performance requirements
The buddy system is ___________ responsibility.
my
I need a mask because
my eyes must be in air to focus.
For the 50 metre/yard swim, my buddies and I will swim ___________ because it is less tiring.
on our backs
I should have my scuba cylinder filled...
only by reputable scuba air stations.
When my snorkel is in my mouth, the tip should be
over the crown of my head
trim is important for streamlining because...
poor trim raises or lowers my feet, causing drag. Submit
The most important feature of my weight system is its
quick release
If I think I'm overexerting while underwater, I should stop, signal my buddy and
rest
Overall benefits of the buddy system include
safety, fun, practicality
I bring a cylinder aboard a dive boat in preparation for a trip out to a nearby reef. The normal procedure would be to
secure the cylinder in a rack
When setting up and wearing my kit, the alternate air source
secures in the triangle formed by my hips and chin.
To stay with my buddy while surface swimming, generally it works well to swim
side by side
Underwater, when I inhale, my buoyancy-increases...
slightly
when I am ascending I should ascend.....
slowly - at my computer's required rate.
To move efficiently as a diver, I should move...
slowly and steadily
I'm descending and discover I can't equalize. The first thing I would do is
stop my descent and signal my buddy/the instructor
Failure to follow the most important rule in scuba diving can cause severe lung overexpansion injuries, which can result in paralysis or death-What do you do?
stop, descend slightly and allow trapped air to work its way out
Which are among the breathing rules I follow as a diver
stop, then maintain or restore slow, deep breathing. Breathe continuously and never, ever, hold my breath. Breathe slowly and deeply. Do not allow myself to get winded or out-of-breath
To start my ascent, I should...
swim up gently
The density of the air in the previous question would be ________ the density at the surface
three times
When descending with a reference, I would normally
use it as a visual reference only
To stay comfortably warm during a dive, I
wear an appropriate exposure suit
You should equalize before
you feel pain or discomfort
