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SDI chapter 4 exam questions with answers

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SDI Certification Exam Review questions with correct answers

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What does SCUBA stand for? Self Contained Underwater Breathing Apparatus List the three important scuba diving changes that occurred in the 1950s 1) Dive tables published for repetitive dives 2) Improved design/quality of scuba gear 3) Dive computers commercially available Name...

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SDI Final Exam with 100% correct answers

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Objects under water appear: 1: The same size as they do on land. 2: Twice as large as they do on land. 3: Closer and larger than they do on land. 4: Smaller and farther away than they do on land. Closer and larger than they do on land. As you descend: 1: Colors appear to fade. 2: Reds ...

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SDI Scuba Certification Exam Study Guide questions with correct answers

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Define SCUBA S - self C - contained U - underwater B - breathing A - apparatus List 3 important scuba diving changes that occurred in 1950s 1) published USN dive tables 2) invented the personal dive computer 3) equipment manufacturers made improvements to the design and workmanship of...

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SDI Exam with correct answers

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Objects under water appear: Closer and larger than they do on land What happens to colors under water As you descend, colors appear to fade, not intensify. Blues and grays are the last remaining colors at depth. Because sound travels faster under water: Sound's increases speed unde...

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SDI Open Water Scuba Diver Exam 2023/2024 with complete solutions

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Objects under water appear Closer and larger than they do on land How much faster does sound travel in water, compared to air? 4 times Water conducts heat away from your body 25 times faster than air does As you descend colors fade, reds and oranges fade first, 30 meters see...

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SDI Firearms Inspection and Troubleshooting (FTT 111)-exam with correct answers

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Which of the following statements are not true about safety and ammunition? Always keep ammunition in the gunsmithing area It is required to both __________________ and _____________________ once the action is open to ensure the weapon is safe. Visually Check; Physically Check The in...

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SDI Final exam with 100% correct answers

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SDI Final exam with 100% correct answers

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SDI EXAM PRACTICE questions with correct answers

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To reach HCI goals, managers and developers need to be knowledgeable about the interplay among: A) users B) tasks C) the environments in which systems are used D) All of the above D) All of the above In HCI, well-being means concern for the human's: A) Physical state, such as comfort, ...

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SDI Quizzes (Questions and Answers)-verified answers

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Objects under water appear: both closer and larger than they do on land What happens to colors as you descend? they appear to fade How much faster does sound travel in water, compared to air? four times as fast Water conducts heat away from your body... 25 times faster than ...

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SDI: open water-exam questions with correct answers

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CH 2 : What is the most important rule in scuba diving? never hold your breath CH 4 : Describe from start to finish the steps to disassembling your scuba system - remove accessories and weights - decompress the system : turn the valve knob completely clockwise, decompress the second gauges...

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SDI Open Water exam with verified answers

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Describe all the steps to assemble a BCD and regulator to a scuba cylinder. Spin the tank around so that the back of the valve is facing you. Place the BCD band(s) over the top of the cylinder so that the back of the BCD is facing you. Raise or lower the BCD so the top is even with the cylinder val...

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SDI Scuba Diving International Part 2 exam questions with answers

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What is the absolute pressure (in atmospheres/bars, ATM) at 20 meters(66 feet) 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? 8 cubic feet How many more times dense is the air in a balloon at 4 ATM/bar com...

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SDI Open Water exam with correct solutions

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What is the absolute pressure (in atm) at 66 feet? 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? 8 cubic feet How many more times dense is the air in a balloon at 4 atm compared to the air density at the ...

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SDI Scuba Diving International exam Part 1 with well answered questions

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What does SCUBA stand for? self-contained underwater breathing apparatus List the three important scuba diving changes that occurred in the 1950s dive tables, PCD (personal computer devise), enhanced diving equipment Name three different devices that modern dive computers replace. d...

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SDI DM exam questions with correct answers

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Which of the following methods are appropriate for accounting for divers at the end of the dive? 1: Head count. 2: Equipment count. 3: Checking for empty seats on the boat. 4: A 'by name" roll call. A 'by name" roll call. The first step in assisting a tired diver back to the boat or ...

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SDI Computer Nitrox exam with complete solutions

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True or False. Oxygen Enriched Air is a term some divers use to refer to Nitrox. True The air we normally breathe consists primarily of: Nitrogen and Oxygen A mixture of nitrogen and oxygen in which the percentage of oxygen is greater than that found in air is generally called: Enri...

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SDI Scuba Diving International exam Part 3 with correct answers

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What is the main purpose of a snorkel? It allows you to conserve air from your scuba cylinder. How do you know if a mask fits correctly? You press it against you face and inhale through the nose, if it stays then you are good. Name at least one visual and one audible rescue signaling...

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SDI International Scuba Diving Chapters 1-5 exam with correct answers

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What does "SCUBA" stand for in scuba diving? self-contained underwater breathing apparatus List the three important scuba diving changes that occurred in the 1950s? 1. No full body suits 2. Published dive tables 3. Equipment changes Name three different devices that modern dive c...

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SDI chapter 5 exam with correct answers

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Define risk management Planning ahead, employing good diving practices, and knowing what to do before an emergency arises. Why should you avoid consuming drugs or alcohol prior to a dive? it can greaten the risk of decompression sickness what elements should you and your buddy agree ...

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SDI chapter 4 exam questions with answers

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describe all the steps to assemble a BCD and regulator to a scuba cylinder. Spin the tank around so that the back of the valve is facing you. Place the BCD band(s) over the top of the cylinder. Raise or lower the BCD so the top is even with the cylinder valve. Fasten the buckles. Remove dust cap, h...

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SDI Open Water (Ch 3- Scuba Equipment)-exam questions with answers

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What is the main purpose of a snorkel? It's used when a long swim on the surface is required in order to conserve air in the tanks. How do you know if a mask fits correctly? 1. Press the mask against your face without using the strap 2. Make sure there's no hair under the skirt of the mas...

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SDI Chapter 3 exam with correct answers

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What is the main purpose of a snorkel?correct answerIt's useful on long surface swims because it allows you to conserve air from your scuba cylinder. How do you know if a mask fits correctly?correct answerYou press it against your face and inhale through the nose, if it stays then you are good. ...

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