External wreck diving doesn't require any equipment beyond your regular gear -
ANSWER-true
Gas Management half plus 14/200 - ANSWER-Divide cylinder pressur ein half and add
14 bar or 200 psi, this is minimum pressure in scuba sylinder at which you start making
your way to exit point
Gas management rule of thirds - ANSWER-divers return after one third of available air
is used
identify the correct ODIGTML category for each item listed - ANSWER-Thermal:
neoprene compression at depth
, gas management: rule of thirds
logistics: having additional breathing air available at 15 ft
decompression: dive computer/RGBM
Inert Gas narcosis: nitrogen narcosis/79% nitrogen
mission: exploring a coral reef wall
oxygen: 21% oxygen/normal air
if deeper diving is going to be a regular activity you will need to have some additional
equipment to your normal gear, check all that apply - ANSWER-redundant dive
computers or depth/timing device
redundant scuba/pony bottle
extra breathing gas cylinder hanging at the safety stop
If diving from an anchored boat, you will usually descend on a line, should you begin
your dive into the current? - ANSWER-Yes so you can return to the boat with the
current in your favor
in your own diving, you should stay within your comfort envelope by - ANSWER-
advancing gradually towards greater depths
it is okay to share depth/timing devices or computers as a buddy team as long as you
stay near each other - ANSWER-false
letter group - ANSWER-a letter symbol for the amount of residual nitrogen remaining in
the body from the previous dives
lights are an obvious requirement for diving at night, but you may not be aware that
several different types are available. The principle requirement is a good ____ dive light.
A smaller ____ light is also useful to make a safe exit in the event your ____ light fails
during the dive. Each diver should have both a ____ and a ____ light - ANSWER-
primary, backup, primary, primary, backup
Low visibility when diving can be defined as the inability to identify another diver at a
distance of 3m (10ft) in a horizontal direction - ANSWER-True
match cardinal directions with their correct degree values - ANSWER-South: 180
north: 0
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