Scuba Diving Final Exam Questions And Answers

what should you do if nitrogen narcosis becomes a problem? {Ans: stop and signal your buddy. ascend, wait, and see if it goes away.}what is total bottom time (TBT)? {Ans: the number of residual nitrogen time plus actual bottom time in a repetitive dive}What are the three ways you can equalize air spaces during descent? {Ans: 1. pinch your nose and blow gently against it 2. wiggling your jaw side-to-side and swallowing 3. blow air into mask through your nose}what are the minimum surface intervals that must be made when planning three or more dives when: 1. ending pressure group after any dive is W or X? 2. ending pressure group after any dive is Y or Z? {Ans: 1. 1 hour 2. 3 hours}What is a surface interval (SI)? {Ans: How long you stay on the surface between two dives.}how do you determine how much weight you need for a dive? {Ans: you want to wear just enough to offset your positive buoyancy, but not more. the second is the right distribution of weight.- trim.}