SDI Certification Exam Review: Questions & Answers

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)