SSI Study guides, Class notes & Summaries

Which of the statements concerning sound transmission underwater is incorrect? -A: Sound will travel farther underwater then in air -B: Divers find it difficult to locate the direction of a sound producing source -C: Divers find it easy to talk to each other directly through water -D: Sound travels four times faster underwater than in air - Answer- C The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water is: -A: 2 ata -B:1 ata -C: 4 ata -D: 3 ata...

Gauge pressure is defined as: Absolute pressure minus 1 ata Underwater, the bending of light causes objects to: Appear closer Absolute pressure is defined as: Total pressure exerted on an object Describing SCUBA came from what event? Development of the demand regulator in 1943 If you experience pain in your ears during decent? Stop the decent and ascend until the pain stops The condition in which certain colors are diminished at depth? Absorption E...

The event that led to the use of the acronym SCUBA to describe diving was: A. Post-WWII equipment refinements B. The invention of the diving helmet in circa 1800 C. The development of the demand regulator in 1943 D. The development of air pumps in the 19th century C. The development of the demand regulator in 1943 Absolute pressure is defined as: A. The pressure at the surface plus 1 ata B. The weight of the water that surrounds the diver C. The total pressure exerted on an object D. A...

SSI Open Water Diver Exam questions and answers One atmosphere of pressure is defined as: a) Each 34 feet of depth in freshwater b) each 33 ft. of depth in saltwater c) 1 ata d) All answers are correct. - ANSWER ==d) All answers are correct The absolute pressure expressed in terms of atmospheres absolute at 33 ft. in sea water is: a) 1 ata b) 3 ata c) 2 ata d) 4 ata - ANSWER ==c) 2 ata Underwater, the bending of light rays causes objects to appear to be:...

The event that led to the use of the acronym SCUBA to describe diving was: A. Post-WWII equipment refinements B. The invention of the diving helmet in circa 1800 C. The development of the demand regulator in 1943 D. The development of air pumps in the 19th century - ANSWER C. The development of the demand regulator in 1943 Absolute pressure is defined as: A. The pressure at the surface plus 1 ata B. The weight of the water that surrounds the diver C. The total pressure exerted on a...

What are two examples of hard coral - ANSWER Elkhart and staghorn The ocean is an important source of life because: - ANSWER It is home to man of the first links in the Earth's food chain The most common injuries occur when: - ANSWER An animal is surprised by a diver's actions and instinctively protects itself Two examples of soft corals are: - ANSWER Black and red coral Divers should avoid contact with all corals because: A. Contact can damage coral B. Contact can be harmful t...

The term Surface Interval is defined as: The amount of time a diver stays out of the water or on the surface between dives. The most serious lung over expansion injury is: Arterial Gas Embolism Diving at altitude or flying after diving: Requires special diving computer functions, altitude tables and/or refraining from flying for at least 24 hours after the completion of a dive If a diver is injured by harmful sea life, it is usually because of: A. The diver's negligence...

Which of the statements concerning sound transmission underwater is incorrect? -A: Sound will travel farther underwater then in air -B: Divers find it difficult to locate the direction of a sound producing source -C: Divers find it easy to talk to each other directly through water -D: Sound travels four times faster underwater than in air - Answer- C The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water is: -A: 2 ata -B:1 ata -C: 4 ata -D: 3 ata...

SSI Open Water Diver Final Exam 2022/2023 1. Which of the statements concerning sound transmission underwater is incorrect? -A: Sound will travel farther underwater then in air -B: Divers find it difficult to locate the direction of a sound producing source -C: Divers find it easy to talk to each other directly through water -D: Sound travels four times faster underwater than in air: C 2. The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water is: -A: 2 ...