SDI Certification Exam Review Questions And Answers Rated A+
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Course
SDI Certification
Institution
SDI Certification
SDI Certification Exam Review Questions And Answers Rated A+
What does SCUBA stand for? ANS Self
Contained
Underwater
Breathing
Apparatus
List the three important scuba diving changes that occurred in the 1950s ANS 1) Dive tables published for repetitive dives
2) Improved design/qualit...
SDI Certification Exam Review Questions And
Answers Rated A+
What does SCUBA stand for? ANS Self
Contained
Underwater
Breathing
Apparatus
List the three important scuba diving changes that occurred in the 1950s ANS 1) Dive tables
published for repetitive dives
2) Improved design/quality of scuba gear
3) Dive computers commercially available
Name three different devices that modern dive computers replace ANS Depth gauge, dive tables,
watch
What sets SDI apart from other training agencies? ANS Students use a personal dive computer
for all instruction and certification dives
How much larger and closer do objects appear under water and why? ANS 33% larger, 25%
closer
Light bends in the air-space between the lens and your eyes.
How much faster does sound move through water than air and why? ANS 4 times faster in water
Water is 800x denser than air; sound travels through denser mediums at faster rates
What is the first color absorbed underwater? ANS RED (followed by OYGBIV)
, When diving from shore, the best time to dive is when there is the least amount of tidal current.
_____ tide is when there is no horizontal water movement. ANS Slack
If you are caught in a rip current, first swim _____ to the current to get out of it before swimming
towards shore. ANS Perpendicular
Start your dive by swimming ____ the current ANS into/against
Global currents are _____.
Local currents ____. ANS Fixed
Fluctuate
Rip current ANS Current which goes seaward due to ocean floor stuctures
Long shore current ANS Flows parallel to shore
Waves are caused by ANS energy generated by WIND
Tides are caused by ANS polarity of the moon
T/F: Anticipate surge action to avoid contact with stationary objects. ANS True
What is surge ANS Back and forth motion underwater which you shouldn't fight; move deeper
and away from dangerous objects if caught in one. USE THEM TO YOUR ADVANTAGE
What types of marine life cause most diving injuries ANS Jellyfish or marine life which account
for a temporary, painful sting. WATCH OUT FOR ALLERGIC REACTIONS.
Injuries due to marine life typically a _____ response ANS Defense
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