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Exam (elaborations)

SDI Certification Exam Review questions and answers

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SDI Certification Exam Review questions and answers What does SCUBA stand for? -Correct Answer-Self Contained Underwater Breathing Apparatus List the three important scuba diving changes that occurred in the 1950s -Correct Answer-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 -Correct Answer-Depth gauge, dive tables, watch What sets SDI apart from other training agencies? -Correct Answer-Students use a personal dive computer for all instruction and certification dives How much larger and closer do objects appear under water and why? -Correct Answer-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? -Correct Answer-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? -Correct Answer-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. -Correct Answer-Slack If yo

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Uploaded on
September 18, 2024
Number of pages
7
Written in
2024/2025
Type
Exam (elaborations)
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Questions & answers

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  • what does scuba stand for
  • list the three important scuba diving changes that
  • name three different devices that modern dive comp
  • how much larger and closer do objects appear under
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