weighing systems are used by the diver primarily to offset the __________ created by the wetsuit - Answer-positive buoyancy
sounds travels about _____ times faster in water than in air - Answer-4
scuba tanks should always have some pressure in them to prevent _______________ - Answer-water fr...
NAUI SCUBA Test 3 Exam Questions
and Answers
weighing systems are used by the diver primarily to offset the __________ created by
the wetsuit - Answer-positive buoyancy
sounds travels about _____ times faster in water than in air - Answer-4
scuba tanks should always have some pressure in them to prevent _______________ -
Answer-water from entering
according to the department of transportation regulations, scuba tanks must be
*hydrostatically tested* every __________ - Answer-five years
you should have your regulator serviced by a certified repair technician at least _____
per year - Answer-once
atmospheric pressure at sea level is _____ pounds per square inch, or 1 atmosphere
absolute - Answer-14.7
atmospheric pressure at sea level is 14.7 pounds per inch or _______________ -
Answer-1 atmosphere absolute
a sealed balloon filled with air that has volume of 6 cubic inches at 99 feet will have a
volume of _____ cubic inches at 33 feet - Answer-12
a diver's body heat is lost through conduction (primarily) as a rate of approximately
_____ times more rapidly than air - Answer-25
the type of pressure is defined as gauge (water) pressure plus atmospheric (air)
pressure is _____ pressure - Answer-absolute
the absolute pressure in the ocean at 53 feet is _____ atmospheres absolute - Answer-
2.61
a depth that is equivalent to one atmosphere in the ocean is equal to _____ feet in sea
water and _____ feet in fresh water - Answer-33 34
pressure in the middle ear is equalized through a part of the body called the _____
tubes - Answer-eustachian
a diver's inability to equalize his/her ears during ascent could cause a _____ or a
__________ - Answer-block, reverse block
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