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Exam Review: SDI Certification :Questions & Answers: Updated APlus Guide $7.99   Add to cart

Exam (elaborations)

Exam Review: SDI Certification :Questions & Answers: Updated APlus Guide

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  • Course
  • SDI
  • Institution
  • SDI

What should you do if you suddenly feel sick and develop a headache during a scuba dive? (Ans- Abort dive and controlled ascent. Breathe fresh air or oxygen As pressure increases (Ans- Volume decreases What is the main purpose of a snorkel? (Ans- Allows you to conserve air from your scu...

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  • September 18, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • SDI
  • SDI
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Joy100
SDI Certification Exam Review:
Questions & Answers

What should you do if you suddenly feel sick and develop a headache
during a scuba dive?
(Ans- Abort dive and controlled ascent. Breathe fresh air or oxygen

As pressure increases
(Ans- Volume decreases

What is the main purpose of a snorkel?
(Ans- Allows you to conserve air from your scuba cylinder at long intervals
of time at the surface

How do you know if your mask fits correctly?
(Ans- Will tighten to your face and won't fall off via suction through your
nose

Name one audible and one visual rescue signal device
(Ans- Whistle/horn
Bright-colored lift bag

Name two basic fin designs
(Ans- Full-foot and open-heel

What is the main difference between a wet suit and a dry suit?
(Ans- Dry suit is designed with an integrated inflation system to keep body
completely out of contact with water. Dry suits keep divers completely dry
for use in cold water (below 50 degrees)

, What extra attire can provide warmth?
(Ans- Hood, hooded vests, boots, gloves, caps

List the four functions of a dive computer
(Ans- Depth, dive time, ascent rate, surface interval time


Define no-stop time
(Ans- Amount of time remaining at any point during the dive before a
necessary decompression stop

What two ways do a PDC alert you on ascending too fast?
(Ans- Blink and ascent alarm

How do you determine a time limit a repetitive dive from a PDC?
(Ans- Surface mode shows depths ranging every ten feet with the no-stop
time limits adjusted for current depth

What are the two modes of operation of a dive computer?
(Ans- Surface and dive modes

What are the two types of weight systems?
(Ans- Weight belt
Weight-integrated BCD

What are the two types of dive flags?
(Ans- International flag
Diver-down flag

Describe the function of regulator first stage and second stage
(Ans- First stage - attaches to tank valve and reduces the high-pressure air
to intermediate pressure

Second stage - delivers air at ambient pressure directly to the diver

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