SSI Open Water Diver Final Exam Study Guide Section 1 Latest Quiz 2023, Quizzes of Earth Sciences

Download SSI Open Water Diver Final Exam Study Guide Section 1 Latest Quiz 2023 and more Quizzes Earth Sciences in PDF only on Docsity! SSI Open Water Diver Final Exam Study Guide Section 1 Latest Quiz 2023 Describing diving with the acronym SCUBA came from what event? - Correct answer The development of the demand regulator in 1943. Earplugs: - Correct answer Should never be worn while diving. If a flexible air-filled container has a volume of 40 cu ft on the surface, what would the volume be at 99 feet in sea water? (rounded off) - Correct answer 10 cu Absolute pressure is defined as: - Correct answer The total pressure exerted on an object. The greatest relative pressure change in sea water takes place between ____ and ____ feet. - Correct answer 0/33 ft One atmosphere of pressure is defined as: - Correct answer 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: - Correct answer Closer. If you experience pain in your ears during descent: - Correct answer Stop the descent and ascend until the pain stops. The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water is: - Correct answer 2 ATA Ear Squeeze can be prevented by: - Correct answer Relaxing; never diving with a cold; and rotating the jaw, swallowing, or Valsalva The condition in which certain colors are diminished as depth increases is called: - Correct answer Absorption. Gauge pressure is defined as: - Correct answer Absolute pressure minus 1 ATA Sinus squeeze can be prevented by: - Correct answer Not diving with a cold. Which of the statements concerning sound transmission underwater is correct? - Correct answer Sound travels four times faster in water than in air; sound travels farther underwater than air; divers find it difficult to locate the source of the sound underwater. The first symptom of a sinus squeeze is usually: - Correct answer A sharp pain of wedging sensation above the eyes. The purpose of equalization is to: - Correct answer Introduce additional air into body air spaces in response to increasing external pressure. Salt water weighs ___ pounds per cubic foot and freshwater weighs ___ pounds per cubic foot. - Correct answer 64/62.5 Body heat is lost underwater ___ than in air. - Correct answer 25-30x faster. The absolute pressure expressed in terms of atmospheres absolute at 99 feet in salt water is: - Correct answer 4 ATA Proper equalization techniques must be learned in order to: - Correct answer Prevent squeeze injuries, sinus squeeze and ear pain. The 6 Systems of Diving Equipment and Gear: - Correct answer Six Systems: Snorkel, Exposure, Delivery, Information, Buoyancy and Accessory. Snorkel System components: - Correct answer Mask, fins, boots, mesh bag, and snorkel. Exposure System components: - Correct answer Insulated suit, mitts or gloves and a dive hood. Delivery System components: - Correct answer Life support equipment for receiving air while underwater. Information system components: - Correct answer Dive computer which allows you to measure air, depth, time, temperature, ascent and descent rates, and repetitive dives. Buoyancy system components: - Correct answer Part of the life support equipment and helps you achieve optimal buoyancy during each dive, including surface flotation, controlled descents, proper swimming attitude at depth and controlled ascents back to the surface. Has a visual and audible signaling device and shears or a knife. Many BC's are weighted.