Scuba
If I think I'm overexerting while underwater, I should stop, signal my buddy and: a. rest b. ascend immediately c. use purge-assisted breathing d. fully inflate my BCD
rest
A depth change of 10 meters/33 feet causes a pressure change of A. 1 bar/ata B. 2 bar/ata C. 3 bar/ata D. 4 bar/ata
1 bar/ata
As a newly certified PADI Open Water Diver, I will be trained to dive with a buddy as deep as: A. 10 meters/30 feet B. 18 metres/60 feet C. 30 mètres/ 100 feet D. 40 mètres/130 feet
18 metres/60 feet
If you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be ________ liters. A. 1 B. 2 C. 3 D. 4
2
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 begin our ascent when either of our SPG reads: a. 50 bar/800 psi b. 70 bar/1000 psi c. 90 bar/1300 psi d. 110 bar/1700 psi
90 bar/1300 psi
To control my buoyancy, normally I will use my weight system and my a. fins b. scuba cylinder c. wet suit d. BCD
BCD
TF: A cylinder with a higher working pressure always holds more air than a cylinder with a lower working pressure
False
TF: From among masks that fit me, I should a mask that fits as far away from my face as possible.
False
TF: 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
False
TF: My SPG is always part of my dive computer
False
TF: Salt water causes more buoyancy than fresh water because it is less dense and weighs less
False
TF: There's no real benefit to choosing the components of my scuba kit as an integrated package
False
While my buddy and I are diving, a motorboat passes by about 300 meters/yards away. Which of the following statements is true? a. it will sound farther away (quieter) than in air b. I may have difficulty determining where the boat is based on the sound c. it will sound like its straight below me
I may have difficulty determining where the boat is based on the sound
I'm renting a scuba cylinder at a dive resort. Among the cylinders for hire, some have green and yellow bands that read "Nitrox." As a PADI Open Water Diver with no other training or instructor supervision, am I qualified to use one of those cylinders?
No
TF: At the surface, its 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
TF: Because water is denser than air, it takes more effort to move through water
True
TF: Buoyancy is a force that pushes an object in water upward
True
TF: Certain medical conditions can be hazardous while diving, so it is important to answer all questions on the Medical Statement honestly and completely.
True
TF: Failure to complete assigned independent study can create significant delays, and my instructor may have to cancel and reschedule sessions until I complete the assignment
True
TF: Failure to follow the most important rule in scuba diving can cause severe lung over expansion injuries, which can result in paralysis or death
True
TF: Fins provide a large surface area so my legs can push against the water effectively
True
TF: Getting the service my gear needs may be a consideration when choosing equipment.
True
TF: I chill faster in water than in air of the same temperature because water absorbs more heat than air does.
True
TF: I equalize gently because an extended, forceful equalization can cause permanent damage to my ears and hearing
True
TF: I must be able to quickly release enough weight to float reliably in an emergency, but not necessarily all my weight.
True
TF: If I'm tired, have labored breathing and feel air-starved and anxious during a dive, it is likely I am experiencing overexertion
True
TF: In recreational diving, the buddy system means diving with another diver or divers in a team that provides assistance and safety benefits
True
TF: It is important to master buoyancy control because it affects almost everything I do in and underwater.
True
TF: My BCD should have adequate capacity to easily float my equipment and me at the surface
True
TF: My body responds to anxiety with increased breathing, but slow breathing helps reduce anxiety.
True
TF: 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
TF: My local dive pro will usually set up my regulator components
True
TF: One reason for wearing more than one weight system is that it is sometimes easier than handling a single, heavier one.
True
TF: Regulators need periodic overhauls, typically every year to two years
True
TF: Snorkels are standard equipment for scuba diving because they allow me ti 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
TF: Some scuba divers prefer a snorkel with a flexible lower portion so it drops out of the way when not in use
True
TF: Streamlining benefits me as a diver because it reduces drag, which helps me save energy
True
TF: The LPI mechanism inflates the BCD with air from my scuba cylinder
True
TF: To prepare adjustable fins, I should adjust the straps wearing my wet suit boots
True
TF: 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
TF: When scuba diving, normal breathing keeps your lungs equalized to the surrounding pressure
True
My buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent with recommended BCD care? a. yes b. no
Yes
A squeeze is caused by: a. wearing my wet suit or other gear too tightly b. a pressure imbalance between the surrounding pressure and an air space
a pressure imbalance between the surrounding pressure and an air space
I want to adjust my mask so the strap rests a. below my ears, above the neck b. over my ears, below the crown of my head c. above my ears, over the crown of my head
above my ears, over the crown of my head
Equalization is the process of a. adding air to an air space b. removing air from an air space c. reducing the surrounding pressure d. increasing the surrounding pressure
adding air to an air space
The two basic fin styles are ____________ fins. a. large blade and small blade b. freshwater and marine c. vented and split d. adjustable and full-foot
adjustable and full-foot
Overall benefits of the buddy system include: (check all that apply) a. practicality b. safety c. fun
all of the above
Which of the following are among the breathing rules I follow as a diver? (check all that apply) a. breathe continuously and never, ever, hold my breath b. breathe slowly and deeply c. do not allow myself to get winded or out of breath d. if faced with a problem, stop, then maintain or restore slow, deep breathing
all of the above
I should equalize a. when I feel pain or discomfort b. only if I can't tolerate the pain or discomfort c. before I feel pain or discomfort d. when I reach the bottom
before I feel pain or discomfort
When choosing an alternate air source, a primary consideration involves deciding a. whether to let it dangle b. where to secure it c. between independence and simplicity d. whether you really need one
between independence and simplicity
My primary considerations when choosing fins are fit and: a. blade size b. material c. splits d. vents
blade size
The most important rule in scuba diving is to: a. always dive with a buddy b. breathe continuously and never hold your breath c. check your air supply every five minutes
breathe
A balloon fully inflated and sealed at 10 meters/33 feet, would probably ____________ during ascent to the surface. A. shrink (become smaller) B. burst
burst
The _____________ is a safety device that relieves accidental overpressure by releasing air before reaching the pressure at which the cylinder would fail. a. DIN value b. burst disk c. cylinder alloy
burst disk
Accessory weights: a. must have quick releases b. can help you adjust your trim c. require special training
can help you adjust your trim
On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy. I should: a. take an approved decongestant so I will be able to equalize b. plan to take a longer as I descend c. cancel the dive until i'm well
cancel the dive until I'm well
The three most important considerations in choosing scuba equipment are suitability, fit and _____________. a. cost and features b. color and style c. manufacturer d. comfort
comfort
When I conduct a predate safety check, the "A" in the recall phrase includes: a. assuming that all releases are secure b. confirming adequate air pressure for the dive c. adjusting the BCD d. addressing weight system issues
confirming adequate air pressure for the dive
Water's density works best for me when I use the skill of: a. shallow, rapid breathing b. clearing water from my mask c. equalizing my ears, sinuses and mask d. controlling my buoyancy
controlling my buoyancy
When I descend, my buoyancy tends to ____________. When I ascend, it tends to ______________. a. increase, increase b. increase, decrease c. decrease, increase d. decrease, decrease
decrease, increase
The most efficient way to breath dense air underwater is to breathe a. shallowly and slowly b. shallowly and rapidly c. deeply and slowly d. deeply and rapidly
deeply and slowly
Trim means having the right ___________ of weight. a. distribution b. amount c. shape
distribution
The most important consideration when choosing a regulator is a. ease of breathing b. color c. dive/predive switch d. adjustable second stage
ease of breathing
After 30 minutes underwater, I start to feel a bit too cool and uncomfortable, I should: a. increase my activity b. keep my arms by my sides c. end the dive
end the dive
While diving, I start to feel cool and shortly begin to shiver uncontrobally, I should: a. increase my activity b. keep my arms by my sides c. end the dive immediately, dry off and seek warmth
end the dive immediately, dry off and seek warmth
My mask encloses my nose so I can: a. equalize my mask b. suck the mask into place
equalize my mask
Scuba cylinders require pressure testing ______________ and visual inspection _____________. a. annually, annually b. annually, every 2-5 years c. every 2-5 years, annually d. every 2-5 years, every 2-5 years
every 2-5 years, annually
TF: As my buddy and I kit up, the normal practice is to be entirely independent. Helping each other is discouraged.
false
My bussy and I descend to 12 metres/40 feet. I would expect to use my air ______________ at 6 meters/20 feet a. slower than b. at the same rate as c. faster than
faster than
My BCD should fit: a. very tightly and restrict breathing when fully inflated b. fit snugly but not restrict breathing when fully inflated
fit snugly but not restrict breathing when fully inflated
As you descend in water, the pressure A. increases B. decreases C. does not change
increases
Underwater, when I inhale, my buoyancy a. decreases slightly b. increases slightly c. doesn't change
increases slightly
Before each use, I should __________________ my equipment. a. inspect b. wash c. warm d. dry
inspect
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: a. it's easier than descending immediately b. it saves our cylinder air for the dive c. we enjoy the exercise
it saves our cylinder air for the dive
Underwater objects appear: a. larger and/or closer b. smaller and/or more distant c. the same as they do in air
larger and/or 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: a. more vivid red b. less red than at the surface c. blue
less red than at the surface
If my buddy and I get separated, the general procedure is to: a. return to where I last saw my buddy and wait b. search until we reunite or until I run low on air c. bang on my cylinder to get my buddy's attention with sound d. look for each other for no more than a minute, then reunite on the surface
look for each other for no more than a minute, then reunite on the surface
As I descend, increasing pressure affects my (choose all that apply): a. mask b. ears c. sinuses d. skin
mask ears sinuses
PADI courses are performance-baed. This means that to be certified, I must A. meet specific performance requirements B. spend a given number of hours in training C. simply pay for the course
meet specific performance requirements
The buddy system is ___________ responsibly a. my b. the divemaster's c. my buddy's d. no one's
my
I need a mask because a. I will inhale water without it b. my eyes must be in air to focus
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. a. face down b. on our backs
on our backs
I should have my scuba cylinder filled: a. from any compressed air source b. with pure oxygen c. with pure nitrogen d. only by reputable scuba air stations
only by reputable scuba air stations
When my snooker is in my mouth, the tip should be a. above my forehead b. over the crown of my head c. at the base of my skull
over the crown of my head
Trim is important for streamlining because: a. poor trim raises or lowers my feet, causing drag b. it means I have the correct amount of weight
poor trim raises or lowers my feet, causing drag
My sunglasses case falls out of my pocket into the water, but fortunately, it floats so I retrieve it. I would say my sunglass case is ____________ buoyant. a. positively b. negatively c. neutrally
positively
Overexertion results from a. slow, deep breathing b. prolonged increased effort c. normal swimming
prolonged increased effort
The most important feature in my weight system is its a. comfort b. quick release c. size d. trim
quick release
One method of airway control is to inhale slowly. I can also _______________ to help breathe past small amounts of water in my regulator. a. tilt my head upward b. press the purge button c. close and reopen the cylinder valve d. raise my tongue
raise my tongue
I bring a cylinder aboard a dive boat in preparation for a trip out to a nearby reef. The normal procedure would be to a. stand the cylinder on the deck b. lay the cylinder on the deck c. secure the cylinder in a rack
secure the cylinder in a rack
When setting up and wearing my kit, the alternate air source a. dangles on either side b. secures in a triangle formed by my hips and chin c. goes in a pocket on my left d. goes in a pocket on my right
secures in a triangle formed by my hips and chin
To stay with my buddy while surface swimming, generally it works well to swim: a. side by side b. with the faster diver in front c. with the slower diver in front
side by side
While scuba diving, I should breathe: a. rapidly and shallowly b. slowly and deeply
slowly and deeply
To move efficiently was a diver, I should move: a. quickly and steadily b. quickly and sporadically c. slowly and steadily d. slowly sporadically
slowly and steadily
I'm descending and discover I can't equalize. The first thing I would do is: a. equalize more forcefully b. stop my descent and signal my buddy/the instructor c. slow my descent and see if the problem corrects itself
stop my descent and signal my buddy/instructor
During ascent I feel discomfort in my ears, I should: a. continue my ascent at a slightly faster rate b. stop, descend slightly and allow trapped air to work its way out c. use a decongestant before the next dive d. equalize by blowing gently against blocked nostrils
stop, descend slightly and allow trapped air to work its way out
The density of the air in the previous question would be ___________ the density of the surface A. one-third B. one-half C. three times D. four times
three times
When descending with a reference, I would normally: a. make physical contact with it b. ignore the reference and use my dive computer c. use it as visual references only
use it as visual references only
To stay comfortably warm during a dive, I: a. wear an appropriate exposure suit b. near dive in water colder than 24C/75F
wear an appropriate exposure suit