Padi Open Water Already Passed

inflatable bladder {Ans: Controls buoyancy}Why does my mask need to enclose my nose? {Ans: Because the mask creates an air space, you need your nose to blow in it to equalize it}How do my buddy and I manage our air supply together while diving? {Ans: Plan your dive around who breathes air the fastest. Subtract your reserve/ascent supply from your starting pressure to find out how much pressure you have for the main part of the dive To be safe, plan to use half your air coming down, and half coming back}What are signs/symptoms of gas narcosis? {Ans: Feeling drunk/high, loss of coordination, slowed thinking, slowed reactions, inappropriate laughter, depression, false sense of security, ignoring or disregard for safety, anxiety or panic when you're under stress at depth}What are the current recommendations for flying after a single dive? {Ans: A minimum surface interval of 12 hours}How should I hold a compass when navigating with it underwater? {Ans: Relatively level, aligning the lubber line with the center line of your body, locking your arms, and looking over the compass, not down on it}