Knowledge Review 2 Flashcards
I take a colorful fish identification slate with me while diving. looking at the slate underwater at 12 m/40 ft, I would expect the slate to look A. smaller/farther away B. more colorful C. less colorful D. larger/closer
C and D
less colorful, larger/closer
while underwater, I want to move efficiently by
A. moving as quickly as possible
B. being streamlined
C. having just a little more weight than I actually need
D. swimming slowly and steadily
E. maintaining proper trim
B, D, E
being streamlined, swimming slowly and steadily, maintaining proper trim
during a dive, I can’t stop shivering. the proper response would be to
A. exit the water immediately, dry off and seek warmth
B. exit the water as planned, but wear more exposure protection next time
C. exit the water when convenient, and swim rapidly to warm up
A. exit the water immediately, dry off and seek warmth
during a dive, my buddy and I have to swim hard because of an unexpected current. if I were to begin to feel fatigued, have labored breathing, experience a feeling of suffocation or air starvation, and perhaps feel like I may panic, I should
A. signal “up” and head to the surface
B. switch to an alternate air source
C. stop all activity, signal my buddy and rest
C. stop all activity, signal my buddy and rest
when planning our dive, my two buddies and I agreed that the general procedure for buddy separation would be adequate. if during the dive I find I am with one buddy but can’t see the other, which of the following applies?
A. this is a buddy separation. stay with the remaining buddy and search for no more than a minute, then reunite on the surface
B. this is a buddy separation. stay with the remaining buddy, return to where the missing buddy was last seen and wait
C. this is a buddy separation. the remaining buddy and I should split up and look for the missing buddy
D. this is not a buddy separation for the remaining buddy and me. stay with the remaining buddy and continue the dive while the one who is missing looks for us
A. this is a buddy separation. stay with the remaining buddy and search for no more than a minute, then reunite on the surface
the buddy responsibility is \_\_\_\_ responsibility A. my buddy's B. the divemaster's C. my D. no one's
C. my
my buddy and I are planning a shore dive. we’re descending onto a very gradual slope that begins at 5 m/15 ft, so our descent and ascent will be a gradual part of swimming out and back underwater. we have similar cylinders filled to 2000 bar/3000 psi. we plan:
- 50 bar/500 psi reserve
- 20 bar/300 psi for our safety stop
- to turn the dive when we’ve used 1/3 of the air available to use on the dive
this means we should head back when either of our SPGs read A. 70 bar/800 psi B. 145 bar/1900 psi C. 157 bar/2270 psi D. 170 bar/2500 psi
C. 157 bar/2270 psi
my fin strap comes loose (later I discover that I didn’t buckle it properly) while swimming at the surface in choppy waves. which of the following habits would help me as I handle this problem?
A. having my mask on and a mouthpiece in my mouth
B. having enough air in my BCD for adequate buoyancy
C. staying close to and signaling my buddy
A, B, C
having my mask on and a mouthpiece in my mouth, having enough air in my BCD for adequate buoyancy, staying close to and signaling my buddy
I’m about to begin a descent with my buddy. which of the following steps should I take before actually beginning my descent?
A. equalize myself
B. orient myself to something at the surface
C. check that my computer is active
D. confirm that my buddy is ready
E. add air to my BCD
B, C, D
orient myself to something at the surface, check that my computer is active, confirm that my buddy is ready
my buddies and I are wearing wet suits for exposure protection. as I descend, my buoyancy will ____, so I should ____ to control my buoyancy
A. remain constant, do nothing
B. increase, release air infrequently from my BCD in large amounts
C. increase, release air frequently from my BCD in small amounts
D. decrease, add air infrequently t my BCD in large amounts
E. decrease, add air frequently to my BCD in small amounts
E. decrease, add air frequently to my BCD in small amounts
I should never descend or ascend without a reference that I can follow or make contact with
true/false
false
as a prudent, conservative diver, the following are normal parts of my ascents
A. ascending at 18 m/60 ft per minute (or slower if specified by my computer)
B. inflating my BCD to begin my ascent
C. stopping for 3 minutes at approximately 5 m/15ft
D. adjusting my buoyancy in small amounts frequently
A, C, D
ascending at 18 m/60 ft per minute (or slower if specified by my computer), stopping for 3 minutes at approximately 5 m/15ft, adjusting my buoyancy in small amounts frequently
while boat diving, my buddy and I finish our safety stop and ascend to the surface. when I reach the surface, I should
A. switch to my snorkel, inflate my BCD and signal “okay” to the divemaster
B. signal “okay” to the divemaster, switch to my snorkel and inflate my BCD
C. inflate my BCD, switch to my snorkel and signal “okay” to the divemaster
C. inflate my BCD, switch to my snorkel and signal “okay” to the divemaster
match the letter with the characteristics of the exposure suit type.
A. insulation provided by layer of air and undergarment
B. proper fit is important to keep water trapped against your body
C. little or no insulation
wet suit
dry suit
skin suit
B. wet suit
A. dry suit
C. skin suit
which of the following can be a problem before the dive when diving on a warm day in a wet or dry suit? A. proper weighting B. entering the water C. overheating D. hypothermia
C. overheating
