sdi scuba training chapter 1 questions and answers | 100% pass
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Course
SDI
Institution
SDI
sdi scuba training chapter 1 questions
and answers | 100% pass
What does scuba stand for? - Answer-self contained underwater breathing
apparatus
List the 3 important scuba diving changes that occurred in the 1950s. - Answer-
dive tables, pdc [personal dive computer], enhanced diving equipment
...
Name 3 different devices that modern dive computers replace. - Answer✔✔-dive
tables, gauges, audible and/or visual alarms
What sets scuba diving international apart from other training agencies? -
Answer✔✔-sdi understands the need for enhanced diving equipment
How much larger and closer do objects appear underwater and why? - Answer✔✔-
25%, in order for your retinas to stay focused underwater there needs to be an airspace
between your eyes and the water
How much faster does sound move through water than air and why? - Answer✔✔-4
times faster. water is about 800 times denser than air.
What is the first color to be absorbed in water? - Answer✔✔-red
When diving from a shore, the best time to dive is when there is the least amount of
tidal current. BLANK tide is when there is no horizontal water movement. -
Answer✔✔-BLANK=slack
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