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SDI OPEN WATER EXAM 2024 WITH 100% CORRECT ANSWERS

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SDI OPEN WATER EXAM 2024 WITH 100% CORRECT ANSWERS What is the absolute pressure (in atm) at 66 feet? - correct answer 2 atm What will be the volume in a ball that is filled with two cubic feet of air at 99 feet when it's taken to the surface? - correct answer 8 cubic feet How many more times dense is the air in a balloon at 4 atm compared to the air density at the surface? - correct answer 4 X as dense What is the abbreviation for an atmosphere? - correct answer atm If a scuba cylindar lasts 2 hours (120 minutes) at sea level, how long will it last at 66 feet? - correct answer 40 minutes How often should a diver equalize during a descent? - correct answer Early and often What should you do if you experience discomfort in your ears while descending? - correct answer Stop descent, ascend a few feet. Equalize, then descend again. What is a reverse block? - correct answer Pressure caused by air spaces in your body expanding during ascent. What is squeeze? - correct answer The painful compression of air spaces in your body or equipment during descent. What should you do if you experience a reverse block upon ascending? - correct answer Descend a few feet until the pain subsides. Wait a few moments. Then, ascend again. What is the most important rule in scuba diving? - correct answer Never hold your breath! Wh

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