Exam (elaborations)
NAUI SCUBA Exam
- Course
- Institution
Exam of 6 pages for the course NAUI SCUBA at NAUI SCUBA (NAUI SCUBA Exam)
[Show more]
Content preview
NAUI SCUBA ExamAt a minimum, while diving, most dive computers display: - ANSWER Maximum
depth, current depth, actual bottom time, remaining allowable bottom time.
Which of the following is an essential feature to consider when selecting a diving
mask? - ANSWER Tempered or safety glass
Snorkels over 15 inches (38 centimeters) in length are not recommended primarily
because: - ANSWER They have too much dead air space.
When buying or renting equipment for diving, the most important consideration is: -
ANSWER Its fit on your body.
When rinsing a regulator it is best to: - ANSWER Leave the regulator attached to
the tank or have the dust cap in place.
Three features that are common to all buoyancy control devices are: - ANSWER An
overpressure relief valve, inflation/deflation hose, low pressure inflator hose.
Three types of alternate air sources that are in common use today are: - ANSWER
Octopus rigs, completely redundant systems, an integrated regulator into the BCD
inflation/deflation hose.
According to the United States Department of Transportation regulations, scuba
tanks must be hydrostatically tested every: - ANSWER 5 years
The most important functional feature of a weight belt or weight system is: -
ANSWER A means for ditching the weights immediately with one hand.
The primary purpose of the exposure suit is to: - ANSWER Preserve body heat
during dives.
You should have your regulator serviced by a certified repair technician: - ANSWER
At least once per year.
The stage of the regulator which reduces tank pressure is: - ANSWER first
Two types of materials that scuba tanks are made from are steel and _________. -
ANSWER aluminum
The _________ line is the direction of travel line on the compass. - ANSWER
lubber
The dive knife is used primarily as a _________ for digging, cutting, pounding and
prying. - ANSWER Tool
, Markings on scuba tanks include: - ANSWER Date of hydrostatic test, serial
number, type of material.
Atmospheric pressure at sea level is: - ANSWER 14.7 pounds per square inch/1.0
atmosphere absolute (1.01 bar).
A sealed balloon filled with air that has a volume of 4 liters at 99 feet of seawater
(30.2 m) will have a volume of ____________ liters at 33 feet of seawater (10.1 m). -
ANSWER 8 liters
The weight of freshwater is: - ANSWER 62.4 pounds per cubic foot (1000 kg/m3).
Air, the gas most commonly used by recreational scuba divers, is composed of: -
ANSWER 78% nitrogen, 21% oxygen, trace gasses.
Which of the following causes objects to appear larger and closer when looking
through a mask during a dive? - ANSWER Refraction
Sound travels approximately how many times faster in water than in air? - ANSWER
4
A diver's body heat is lost through conduction (primarily) at a rate of approximately
_________ times more rapidly than in air. - ANSWER 25
Which of the following actions should a diver take to reduce drag and therefore the
amount exertion during a dive? - ANSWER Streamline his/her body position.
The absolute pressure in the ocean at 53 feet (16.15 m) is: - ANSWER 2.6
atmospheres absolute (2.6 bar).
If a diver's surface air consumption rate is 30 psi per minute (2.1 bar per minute),
what would be his/her consumption rate at 66 feet (20.11 m) of seawater? -
ANSWER 90 psi per minute (6.2 bar per minute).
A depth that is equivalent to one atmosphere in the ocean is equal to _________
feet (meters) in seawater and _________ feet (meters) in freshwater. - ANSWER
33; 34 (10.06;10.36)
Two methods of measuring air pressure are BAR or: - ANSWER PSI
Which of the following describes the term "positive buoyancy"? - ANSWER An
object displaces an amount of water weighing more than itself.
Three factors that adversely affect a diver's air consumption rate are: - ANSWER
Large physical size, high anxiety, poor fitness level.
Pressure in the middle ear is equalized through a part of the body called the: -
ANSWER Eustachian tube
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller leonardmuriithi061. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78998 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now