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which brings us to our quiz! Whether you've already been diving, or whether it remains a persistent daydream for you, we're here to test your knowledge on all things scuba. (Examples of non-recreational divers include military "frogmen," underwater photographers and salvage operators). The Advanced certification requires the completion of three core dives: deep dive, underwater navigation, and night dive. There's a good bit to learn about scuba, even for simple recreational divers. 55 PADI Practise Open Water Diver Final Exam Answers Night diving will introduce a whole new dimension of nocturnal life. The gear that a diver takes down is called a "scuba set," and its primary components are the tank of compressed air, the hoses and the mouthpiece through which the diver breathes. However, few people actually use the capitals, just like few people remember that the word "SCUBA" doesn't refer primarily to a form of diving, but to the equipment itself. So is scuba truly dangerous? Or just misunderstood?Ī few facts about scuba: Technically, it should be written SCUBA, as it's an acronym for Self Contained Underwater Breathing Apparatus. When is an object neutrally buoyant When it displaces a volume of water weighing the same as its own weight. When is an object negatively buoyant When it displaces a volume of water weighing less than its own weight.
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And yet, this fatality rate is on par with jogging. When is an object positively buoyant When it displaces a volume of water weighing more than its own weight. Which is as it should be - scuba diving is considered an extreme sport, and it does cause about 13 deaths per 100,000 divers. For the uninitiated, it's fascinating, and more than a little scary. Scuba diving: Among those who do it, it's more than a sport, it's a way of life.
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