



Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
SDI International Scuba Diving Chapters 1-5 Comprehensive
Typology: Exams
1 / 7
This page cannot be seen from the preview
Don't miss anything!
A cylinder should be visually inspected at least ________ a year and hydrostatically tested every __________ years, in the United States. - ANSWER-Once, Five A properly weighted scuba diver should float at _____________ when her BCD is deflated and lungs are fully inflated. - ANSWER-Eye Level Define maximum dive depth? - ANSWER-How far down you are Define no-stop time - ANSWER-The amount of time remaining at any point during a dive before incurring a mandatory decompression stop. Define risk management - ANSWER-RM is a decision-making process used to systematically evaluate possible courses of action, identify risks, benefits, and determine the best course of action for any given situation. Describe all the steps to assemble a BCD and regulator to a scuba cylinder? - ANSWER-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 valve. Fasten the buckles. Remove dust cap, hold first stage in left hand, rotate the chambers until the primary second stage sits on the right. Screw the knob on your first stage until it is finger tight. Connect the low pressure inflator hose to the stem on the BCD's inflator. Turn on the air. Describe from the start to finish the steps to disassemble your scuba system. - ANSWER-1. Remove accessories and weights
buckle, stand straight, look directly ahead and take a big step out off the edge of the platform. Signal OK if everything is alright. Describe the function of a scuba regulator first stage and second stage - ANSWER-The first stage regulator lowers the PSI from a high pressure to an intermediate pressure. The second stage regulator further lowers the pressure to an ambient pressure. Describe the procedure recommended for a safety stop. - ANSWER-A safety stop should be conducted between 3 and 6 meters (10-20 feet) for 3-5 minutes before coming up to surface. A safety stop is recommended on any dive up to 30 meters ( feet) and mandatory for dives over 30 meters (100 feet). Describe the symptoms of DCS, including mild to severe signs and symptoms? - ANSWER-1. Joint pain
The thumbs up signal means "OK." True or False - ANSWER-False it means ascend True or False: Anticipate surge action to avoid contact with stationary objects? - ANSWER-True Waves are usually caused by? - ANSWER-Moon, and wind What are the two main modes of operation of a dive computer? - ANSWER-1. Surface mode
What should you do any time the second stage is out of your mouth? - ANSWER-Blow Bubbles or put the back up in your mouth then do either a sweep or reach technique to get it back What should you do if you become entangled underwater? - ANSWER-Do not struggle. Move back the way you came to try to untangle yourself. If you have a knife cut yourself out. If you do not have a knife wait for someone who does to come cut you out. What should you do if you experience a reverse block upon ascending? - ANSWER-Go back down and re ascend and it should clear itself What should you do if you experience discomfort in your ears upon descending? - ANSWER-STOP and re equalize until the discomfort goes away What should you do if you see a potentially dangerous animal underwater and it does not leave the area? - ANSWER-Stay calm and move in a direction away from it (they are more afraid of you than you are of them) What should you do if you suddenly feel sick and develop a headache during a dive? - ANSWER-Stop the dive and resurface What types of marine life cause most diving injuries? - ANSWER-Diver caused injuries 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? - ANSWER-8 cubic feet @ the surface When diving from shore, the best time to dive is when there is the least amount of tidal current. _____ tide is when there is no horizontal water movement? - ANSWER-Slack When planning a repetitive dive, the _________ diver should be made first. - ANSWER- Deepest Which gas causes extreme headaches and nausea, and in high enough concentrations causes unconsciousness and the lips and fingernail beds to turn bright red? - ANSWER-Carbon Monoxide Which gas component in air causes decompression sickness and narcosis? - ANSWER-Nitrogen Why should you avoid consuming drugs or alcohol prior to a dive? - ANSWER-The use of alcohol and drugs greatly increases the risk of decompression sickness in divers.