QUESTIONS AND SOLUTIONS GUARANTEE A+
✔✔My BCD should have adequate capacity to easily float my equipment and me at the
surface.
a. True
b. False - ✔✔a. True
✔✔My BCD should fit ________ - ✔✔snugly but not restrict breathing when fully
inflated
✔✔My buddy is rinsing a BCD and partially fills the bladder with water. Is this consistent
with recommended BCD care? - ✔✔yes
✔✔Submersible Pressure Gauge (SPG) - ✔✔tells you the air pressure remaining in
your cylinder so you can manage your air supply
✔✔Alternate Air Source - ✔✔an extra second stage you use for sharing air with a buddy
should the need arise
✔✔Pony Bottles - ✔✔small cylinders with their own regulators, so they're completely
separate from your main scuba kit
✔✔Second Stage - ✔✔reduces the first stage intermediate pressure to the pressure
around you and delivers air only when you inhale - on demand
✔✔First Stage - ✔✔hub of your regulator that is a simple and reliable device that
supplies air to all the other components
✔✔Yoke - ✔✔holds the first stage to the cylinder with a clamp system
✔✔The most important consideration when choosing a regulator is ________ - ✔✔ease
of breathing
✔✔When choosing an alternate air source, a primary consideration involves deciding
________ - ✔✔between independence and simplicity
✔✔My SPG is always part of my dive computer.
a. True
b. False - ✔✔b. False
Your SPG may be an independent instrument or it may be integrated into your dive
computer
✔✔My local dive pro will usually set up my regulator components.
,a. True
b. False - ✔✔a. True
✔✔When setting up and wearing a kit, the alternate air source ________ - ✔✔secures
in the triangle formed by my hips and chin
✔✔Regulators need periodic overhauls, typically every year to two years.
a. True
b. False - ✔✔a. True
✔✔The ________ is a safety device that relives accidental overpressure by releasing
air before reaching the pressure at which the cylinder would fail. - ✔✔burst disk
✔✔A cylinder with a higher working pressure always holds more air than a cylinder with
a lower working pressure.
a. True
b. False - ✔✔b. False
A cylinder's capacity depends upon both its working pressure and its internal capacity
✔✔I bring a cylinder aboard a diver boat in preparation for a trip out to a nearby reef.
The normal procedure would be to ________ - ✔✔secure the cylinder in a rack
✔✔Scuba cylinders require pressure testing ________ and visual inspections ________
- ✔✔every 2-5 years, annually
✔✔I should have my scuba cylinder filled ________ - ✔✔only by reputable scuba air
stations
✔✔The most important feature in my weight system is its ________ - ✔✔quick release
✔✔I must be able to quickly release enough weight to float reliably in an emergency,
but not necessarily all my weight.
a. True
b. False - ✔✔a. True
✔✔Trim means having the right ________ of weight. - ✔✔distribution
✔✔One reason for wearing more than one weight system is that it is sometimes easier
than handling a single, heavier one.
a. True
b. False - ✔✔a. True
✔✔Accessory weights ________ - ✔✔can help you adjust your trim
, ✔✔Underwater objects appear ________ - ✔✔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 ________ - ✔✔less red than at the surface
✔✔Because water is denser than air, it takes more effort to move through water.
a. True
b. False - ✔✔a. True
✔✔To move efficiently as a dive, I should move ________ - ✔✔slowly and steadily
✔✔Streamlining benefits me as a diver because it reduces drag, which helps me save
energy.
a. True
b. False - ✔✔a. True
✔✔Trim is important for streamlining because ________ - ✔✔poor trim raises or lowers
my feet, causing drag
✔✔Water's density works best for me when I use the skill of ________ - ✔✔controlling
my buoyancy
✔✔I chill faster in water than in air of the same temperature because water absorbs
more heat than air does.
a. True
b. False - ✔✔a. True
✔✔To stay comfortably warm during a dive, I ________ - ✔✔wear an appropriate
exposure suit
✔✔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 shorty being to shiver uncontrollably. I should
________ - ✔✔end the dive immediately, dry off and seek warmth
✔✔While scuba diving, I should breathe ________ - ✔✔slowly and deeply
✔✔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 tongue