SSI Open Water Diver Final Exam Study Guide Section 1

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Describing diving with the acronym SCUBA came from what event? ✔✔The development of the demand regulator in 1943. Earplugs: ✔✔Should never be worn while diving. If a flexible air-filled con... tainer has a volume of 40 cu ft on the surface, what would the volume be at 99 feet in sea water? (rounded off) ✔✔10 cu Absolute pressure is defined as: ✔✔The total pressure exerted on an object. The greatest relative pressure change in sea water takes place between ____ and ____ feet. ✔✔0/33 ft One atmosphere of pressure is defined as: ✔✔Each 33 ft of depth in seawater; 34 ft of depth in freshwater; 1 ATA Underwater, the bending of light rays causes objects to appear to be: ✔✔Closer. If you experience pain in your ears during descent: ✔✔Stop the descent and ascend until the pain stops. The absolute pressure [Show More]

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