SDI Exam with Complete Solutions
A dive knife or cutting tool can be used to - ANSWER-help free entangled divers or
signal others under water.
A regulator equipped with a conventional alternate-air-source second stage: -
ANSWER-Conventional alternate-air-source second stages offer the benefit of being
widely understood and used, and enable either diver to use either second stage.
A regulator system may include - ANSWER-1: A first stage and primary second stage.
2: An alternate air source second stage (or a connection to an alternate-air-source
inflator on the BC).
3: A submersible pressure gauge (SPG), which is usually part of an instrument console.
A repetitive dive is any dive: - ANSWER-any dive made within 24 hours of a previous
dive, or in which your computer indicates there is residual nitrogen left in your system
from a prior dive.
A rip current is a narrow flow of swiftly moving water that runs ____ to shore. -
ANSWER-perpendicular
A scuba cylinder that normally lasts one hour at the surface will last _______ minutes at
20 meters/66 feet. - ANSWER-20
Activities that may increase the risk of decompression sickness include: - ANSWER-
alcohol and drug use.
After your buddy checks to see that your air is turned all the way on: - ANSWER-take
several deep breaths from your regulator while watching your SPG for changes in
pressure.
Air passages such as your trachea (windpipe), which may contain air your body can't
use, are known as: - ANSWER-Dead air spaces.
Among the easiest ways to don a heavy weight belt, at the surface or under water, is to:
- ANSWER-Roll into it.
Any diver can signal to ______ the dive for any ________ - ANSWER-abort, reason
Any time you cannot inhale while scuba diving (such as when a regulator is out of your
mouth), you must be - ANSWER-Exhaling.
Basic post-dive equipment maintenance and care includes - ANSWER-1: Rinsing
thoroughly with fresh water.
2: Allowing to dry completely.
