During an underwater cleanup, my buddy and I fill a large mesh utility bag with several kilograms/pounds of garbage. We should correct answers carry the bag in our hands
T/F: I have a bit of a cold but feel I can manage the dive well enough, so it is okay to dive. correct answers False
T/F: E...
SCUBA Chapter 4 || with Error-free Solutions.
During an underwater cleanup, my buddy and I fill a large mesh utility bag with several
kilograms/pounds of garbage. We should correct answers carry the bag in our hands
T/F: I have a bit of a cold but feel I can manage the dive well enough, so it is okay to dive.
correct answers False
T/F: Exertion from swimming hard, carrying equipment, climbing a ladder, long walks wearing
gear, and heat stress from wearing an exposure suit in a hot climate can lead to heart attack in
predisposed individuals. These factors can also cause problems for people with other
cardiovascular conditions. correct answers True
Before diving, I should refrain from using correct answers Alcohol and tobacco
T/F: Medications can create problems when diving, so I should use prescription drugs and over-
the-counter medications with caution. Any drug that affects my judgment, thinking and/or
reactions should generally not be used before diving. correct answers True
T/F: It is recommended that pregnant women do not dive. correct answers True
a new PADI Open Water Diver, I should refresh my dive skills with a PADI Scuba Review after
____________ of inactivity. correct answers 6 months
T/F: One reason it is important to be certified as a PADI Enriched Air Diver, or under the
supervision of a PADI Enriched Air Instructor, before using enriched air nitrox is to avoid
oxygen toxicity problems. correct answers True
During a dive, I begin to have a headache, feel ill and dizzy. Are these possible symptoms of
contaminated air? correct answers Yes
T/F: To avoid contaminated air, I should have my cylinder filled only at reputable scuba air
sources. correct answers True
The two primary factors that influence how much nitrogen dissolves into my body tissues during
a dive are __________ and _________. correct answers Depth, time
T/F: If I exceed established depth and time limits while diving and then surface, bubbles can
form in my body tissues, causing decompression sickness. correct answers True
After a dive, a diver has numbness, tingling and weakness in the arms. Are these possible
signs/symptoms of DCS? correct answers Yes
Secondary factors thought to contribute to DCS include correct answers Age, cold, injuries,
poorfitness/high body fat
, A no stop dive means I can, _________ the dive, ascend directly to the surface without stopping
if necessary (although I would normally plan a safety stop). correct answers at any time during
If I am planning a dive to 12 metres-40 feet, my no stop limit with be ___________ than my no
stop limit for a dive to 10 metres/30 feet. correct answers Shorter
T/F: Exceeding my computer or table's ascent rate may increase my risk of DCS. correct answers
True
One a repetitive dive, for a given depth my no stop limits will be ______________ those of the
first dive. correct answers Shorter than
T/F: I must use the same dive computer the entire day of diving, on all dives, and not share it
with another diver. correct answers True
T/F: During a dive with my dive computer, my buddy and I will turn the dive based on the first
limit we reach: remaining no stop time or air supply turn point. correct answers True
When diving with a computer, it is recommended that I correct answers dive well within its
limits,
follow the most conservative computer--mine or my buddy's
start at the deepest point and progress shallower
ascend slowly and make a safety stop.
During a dive, my dive computer fails, and I'm not using a backup. I should correct answers
ascend, make a safety stop and end the dive.
T/F: One reason it is important to have environmentally friendly dive skills is to preserve the
natural beauty for other divers. correct answers True
Are divers a significant threat to the overall health of the underwater environment? correct
answers Yes
T/F: My influence as a diver and ambassador for the underwater world allows me to be part of
the solution to the problems the world's aquatic ecosystems face. correct answers True
Advantages of a dive computer over dive tables include dive computers: correct answers are
easier to use than tables,
help offset human error,
give me more time underwater
Before, during and/or between dives, my computer will tell me: correct answers no stop limits,
the ascent rate,
emergency decompression information,
previous dive information
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