Scuba Diving Safety and Techniques, Exams of Sport Studies

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NAUI eLearning Open Water Scuba Diver Final Test ACCURATE Symptoms of Nitrogen Narcosis are similar to: - ANSWER alcohol intoxication the stage of the regulator which reduces working tank pressure to intermediate pressure is: - ANSWER the first stage when the pressure of nitrogen is balanced between the air and your body, you are at a state of - ANSWER equilibrium Open heel fins are usually the fins of choice for scuba divers because: - ANSWER they may be used in a wide variety of environmental conditions The last thing to check before making a giant stride or any water entry is that: - ANSWER area below is clear Engraved markings on scuba tanks include: - ANSWER Date of hydrostatic test, serial number, type of material A diver's body heat is lost through conduction (primarily) at a rate of approximately _________ times more rapidly than in air. - ANSWER 25 when conducting a buoyancy check, neutral buoyancy or proper weighting is attained when, with a normal breath, you float at or near - ANSWER eye level sound travels about_______ times faster in water than in air - ANSWER 4 a regular breathing pattern while diving would be - ANSWER slightly slower and deeper than you normally breathe If a diver's surface air consumption rate is 1.72bar (25 psi) per minute, what would be the consumption rate at 20 meters (66 feet) of seawater? - ANSWER 5.16 bar per minute (75 psi per minute) which is the most effective way to descend while maintaining orientation and attempting equalization of the ears - ANSWER feet first you should have your regulator serviced by a certified repair technician - ANSWER as recommended by the manufacturer A symptom of carbon monoxide poisoning is often: - ANSWER headache Two methods of measuring air pressure are BAR or: - ANSWER pounds per square inch According to NAUI, a repetitive dive is defined as more than one dive within a period of _________ hours. - ANSWER 24 the absolute pressure in the ocean at 16 meters (35 feet) is - ANSWER 2.6 atmospheres absolute Atmospheric pressure at sea level is: - ANSWER 1.0 bar / 14.7 pounds per square inch/ 1.0 atmosphere absolute To relieve a cramp in the calf: - ANSWER Bend the toe of the fin toward the knee to stretch the muscle two types of materials that scuba tanks are made from are steel and ________________ - ANSWER aluminum it is recommended that a dive team from an anchored boat have - ANSWER a trail line 30 meters long with a buoy at the end Physical fitness is an important consideration for scuba divers because it helps to prevent diving accidents due to - ANSWER exhaustion A sealed balloon filled with air that has a volume of 6 cubic inches at 99 feet will have a volume of _____ cubic inches at 33 feet. - ANSWER 12 A diver on the surface waving his/her hand overhead and thrashing violently indicates: - ANSWER distress if you receive your entry level training in a tropical environment and then move or travel to a northern environment, the best way to become familiar with the diving procedures specific to a new locale is to - ANSWER contact an active, preferably NAUI dive master or instructor to orient you to the new locale almost all injuries from aquatic life are caused by _____ action on the part of the animal. - ANSWER defensive A diver's inability to equalize his/her ears during ascent could cause: - ANSWER a block or reverse block which of the following is the point at which a sudden change in water temperature occurs? - ANSWER a thermocline continued loss of body heat in cold water will produce - ANSWER all of the above/following; muscle cramps, progressive immobility, and insensibility to pain an irregular breathing pattern while diving will possibly cause - ANSWER carbon dioxide excess which gas law best explains diving medical problems such as ear and sinus squeeze - ANSWER boyle's law which of the following limits should be established prior to every scuba dive - ANSWER maximum bottom time, maximum depth, minimum air pressure The minimum surface interval recommended between two dives is _________ minutes. - ANSWER 60 what type of pressure is defined as gauge (water) pressure plus atmospheric (air) pressure - ANSWER absolute Breathing dry air, a scuba diver tends to become dehydrated while diving due to: - ANSWER Moisturizing dry inhaled air most surface waves are caused by - ANSWER wind The predictable daily rise and fall of the ocean at a single point is called: - ANSWER the tide the preferred action to take if you find yourself alone and out of air at 30 feet in open water is - ANSWER emergency swimming ascent Pressure in the middle ear is equalized through a part of the body called the: - ANSWER eustachian tube The dive plan should be planned based on - ANSWER the ability of the weakest diver Who overseas cylinders? - ANSWER Department of Transportation (DOT) What does NAUI stand for? - ANSWER National Association of Underwater Instructors What 3 materials are skirt of masks typically made of? - ANSWER Silicone, Rubber, and PVC Motto for dive planning - ANSWER plan your dive, dive your plan Lung expansion injuries - ANSWER Subcutaneous emphysema, mediastinal emphysema, pneumothorax, arterial gas embolism What is a half stop? - ANSWER A safety stop during ascent according to the NAUI dive tables dives to less than 6m (20ft) - ANSWER are considered as 6m (20 foot) dives Because of refraction, objects underwater appear _________ and _________ when the diver is looking through his/her mask. - ANSWER larger; closer When planning and executing a dive, it is important for diving buddies to: - ANSWER agree on a dive leader snorklers over 15 inches in length are no recommended primarily because - ANSWER they have too much dead air space which of the following will help prevent seasickness - ANSWER settle yourself in a midway point of the boat The first color lost in the spectrum upon descent during a dive is _____. - ANSWER red If during a dive you and your buddy become separated, you should: - ANSWER spend no more than one minute looking then surface when selecting a face mask, the most important thing to consider is - ANSWER proper seal and fit Completing this entry level scuba certification course makes you knowledgeable and skillful enough to dive safely in or at: - ANSWER open water with conditions similar to those in which you were trained The primary purpose of the exposure suit is to: - ANSWER Preserve body heat during dives