MASTER SCUBA DIVER FINAL EXAM
QUESTIONS AND ANSWERS
5000 psi (345 bar) - Answer-What pressure will a scuba cylinder with a rated working
pressure of 3000 psi (207 bar) be exposed to during a hydrostatic test?
Permanent expansion - Answer-Which principle represents one basis for the hydrostatic
testing of scuba cylinders?
Tumbling - Answer-If a visual cylinder inspection reveals corrosion inside a scuba
cylinder, it may require cleaning by a process called...
Preventing moisture from entering the cylinder. - Answer-Which of the following is
considered proper care of a scuba cylinder?
DIN valve - Answer-Which of the following valve types incorporates a "captured o-ring"?
Y-valve - Answer-Which valve is an example of a special scuba valve that is required for
certain types of specialty diving such as deep diving with a single cylinder?
Piston; Diaphragm - Answer-Which internal valve designs are available in the first stage
of scuba regulators?
Balanced - Answer-Which valve is unaffected by cylinder air pressure with regard to
how much force is needed to open the valve?
Water has most likely entered the first stage. - Answer-Green discoloration on the first
stage of a scuba regulator indicates...
Pilot - Answer-Which regulator second stage design uses air pressure rather than
mechanical leverage to open the main valve?
Upstream - Answer-In the event of a regulator first stage malfunction, which type of
valve design would be likely to eliminate air flow to the diver?
High; low - Answer-When considering a regulator for purchase or use, an important
point to remember is that certain regulators may not be capable of delivering _____ flow
rates at _____ cylinder pressure during an air sharing emergency.
Cylinder pressure gauges - Answer-Which diving instrument incorporates a bourdon
tube mechanism?
, Accurate monitoring of ascent rate and, if executing a multi-level diving profile,
avoidance of the maximum time/depth penalty - Answer-Two benefits derived from
using an electronic dive computer are...
Boyle's Law - Answer-An air compressor used for filling scuba cylinders operates by the
principle of...
Wave length - Answer-The distance between successive wave-crests is defined as...
Spring; neap - Answer-The highest tides are called ____ tides and the lowest tides are
called _____ tides.
Seiching - Answer-Water rocking back-and-forth in a lake or a bay is defined as...
Rip current - Answer-When waves break on shore in the backrush is funneled through a
narrow opening, the condition is known as...
Twice the effect of the sun - Answer-The effect of the moon on tidal action is about...
Surface winds, the rotation of the earth, the influence of the sun and the moon -
Answer-Currents in bodies of water are formed by...
Spring - Answer-Water of equal temperature at all levels is most likely to be found in a
lake during the...
Halocline - Answer-The horizontal boundary between waters of a differing salinity is
defined as a...
Receive a formal orientation from a diving professional familiar with the area - Answer-
To help avoid injury when diving in an unknown location divers should...
Plunging breaker - Answer-The type of breaking wave that produces the greatest force
when breaking is...
Entering the water as slowly as possible immediately after a wave breaks, getting
beyond the surf zone quickly, before the next wave breaks. - Answer-If the water
conditions are reasonable to make a beach dive, all of the following procedures are
suggested except...
Littoral, planktonic, nektonic, benthic. - Answer-The four basic plant and animal life
zones in the ocean are...
Poisonous - Answer-A marine animal whose tissues are toxic, either in part or entirety
is...
QUESTIONS AND ANSWERS
5000 psi (345 bar) - Answer-What pressure will a scuba cylinder with a rated working
pressure of 3000 psi (207 bar) be exposed to during a hydrostatic test?
Permanent expansion - Answer-Which principle represents one basis for the hydrostatic
testing of scuba cylinders?
Tumbling - Answer-If a visual cylinder inspection reveals corrosion inside a scuba
cylinder, it may require cleaning by a process called...
Preventing moisture from entering the cylinder. - Answer-Which of the following is
considered proper care of a scuba cylinder?
DIN valve - Answer-Which of the following valve types incorporates a "captured o-ring"?
Y-valve - Answer-Which valve is an example of a special scuba valve that is required for
certain types of specialty diving such as deep diving with a single cylinder?
Piston; Diaphragm - Answer-Which internal valve designs are available in the first stage
of scuba regulators?
Balanced - Answer-Which valve is unaffected by cylinder air pressure with regard to
how much force is needed to open the valve?
Water has most likely entered the first stage. - Answer-Green discoloration on the first
stage of a scuba regulator indicates...
Pilot - Answer-Which regulator second stage design uses air pressure rather than
mechanical leverage to open the main valve?
Upstream - Answer-In the event of a regulator first stage malfunction, which type of
valve design would be likely to eliminate air flow to the diver?
High; low - Answer-When considering a regulator for purchase or use, an important
point to remember is that certain regulators may not be capable of delivering _____ flow
rates at _____ cylinder pressure during an air sharing emergency.
Cylinder pressure gauges - Answer-Which diving instrument incorporates a bourdon
tube mechanism?
, Accurate monitoring of ascent rate and, if executing a multi-level diving profile,
avoidance of the maximum time/depth penalty - Answer-Two benefits derived from
using an electronic dive computer are...
Boyle's Law - Answer-An air compressor used for filling scuba cylinders operates by the
principle of...
Wave length - Answer-The distance between successive wave-crests is defined as...
Spring; neap - Answer-The highest tides are called ____ tides and the lowest tides are
called _____ tides.
Seiching - Answer-Water rocking back-and-forth in a lake or a bay is defined as...
Rip current - Answer-When waves break on shore in the backrush is funneled through a
narrow opening, the condition is known as...
Twice the effect of the sun - Answer-The effect of the moon on tidal action is about...
Surface winds, the rotation of the earth, the influence of the sun and the moon -
Answer-Currents in bodies of water are formed by...
Spring - Answer-Water of equal temperature at all levels is most likely to be found in a
lake during the...
Halocline - Answer-The horizontal boundary between waters of a differing salinity is
defined as a...
Receive a formal orientation from a diving professional familiar with the area - Answer-
To help avoid injury when diving in an unknown location divers should...
Plunging breaker - Answer-The type of breaking wave that produces the greatest force
when breaking is...
Entering the water as slowly as possible immediately after a wave breaks, getting
beyond the surf zone quickly, before the next wave breaks. - Answer-If the water
conditions are reasonable to make a beach dive, all of the following procedures are
suggested except...
Littoral, planktonic, nektonic, benthic. - Answer-The four basic plant and animal life
zones in the ocean are...
Poisonous - Answer-A marine animal whose tissues are toxic, either in part or entirety
is...
