SSI open water questions with correct answers

How much does air weigh per cubic foot? - Ans - 0.8 lbs How much does fresh water weigh per cubic foot? - Ans - 62.5 lbs how much does salt water weigh per cubic foot? - Ans - 64 lbs what does SCUBA stand for? - Ans - Self contained underwater breathing apparatus Absolute pressure (ambient pressure) - Ans - the total pressure exerted on an object; 1 atmosphere exerted by air above the surface + additional pressure by water at depth. gauge pressure - Ans - the pressure readings on gauges that reads zero at 1 atmosphere Boyle's Law - Ans - pressure and volume are inversely proportional Where does the greatest relative volume change take place? - Ans - between 0 and 33 feet what are the 5 largest air spaces in you body? - Ans - ears, sinuses, lungs, teeth, and intestines