EXAMS LATEST SCRIPT QUESTIONS AND
ANSWERS SURE A+
✔✔low pressure inflator (LPI) hose - ✔✔Supplies air to your BCD inflator
✔✔submersible pressure gauge (SPG) - ✔✔Hose that tells you air pressure remaining
in your cylinder
Goes under left arm
✔✔What is the most important consideration in choosing a regulator? - ✔✔The ease of
breathing
✔✔yoke system - ✔✔Holds first stage to cylinder with a clamp
✔✔DIN system - ✔✔Regulator screws into valve
✔✔What 3 special maintenance considerations do regulators have? - ✔✔Rinse first
stage individually, run water through second stage, have professional overhaul it about
every year
, ✔✔What 2 components make up a scuba cylinder? - ✔✔The aluminum/steel container
and the valve to control air flow
✔✔What is a burst disk? - ✔✔A safety device that relieves overpressure by rupturing
and releasing air
✔✔What is the most important feature in my weight system? - ✔✔A quick release that
will enable you to float with an uninflated BC
✔✔Why use more than 1 weight system? - ✔✔It will help distribute weight
✔✔trim - ✔✔The orientation and balance of a swimmer in the water - the ideal is
horizontal
✔✔danger/hazard - ✔✔
✔✔okay - ✔✔
✔✔go up/end dive - ✔✔
✔✔something's wrong - ✔✔
✔✔down/descend - ✔✔
✔✔low on air - ✔✔
✔✔okay - ✔✔
✔✔distress/in trouble - ✔✔
✔✔How does being underwater affect the apparent size or distance of things? -
✔✔Refraction occurs, where light changes direction, and things are magnified by 1/3
✔✔How does water affect light intensity and color? - ✔✔It reflects, scatters, and
absorbs light in the roygbiv order
As you go deeper, it gets darker
✔✔How does hearing differ underwater? - ✔✔It travels faster and longer
✔✔How does water's density affect moving in water? - ✔✔It takes more energy the
faster you try to swim