Divemaster Final Exam A Questions with Complete Verified Solutions 2024/2025, Exams of Marine Science and Biology

Download Divemaster Final Exam A Questions with Complete Verified Solutions 2024/2025 and more Exams Marine Science and Biology in PDF only on Docsity! Divemaster Final Exam A Questions with Complete Verified Solutions 2024/2025 True or False. Divers expect a PADI Divemaster to show professionalism by having role-model dive skills, rescue skills, and knowledge about dive management. True. Certified divers can dive unsupervised within the limits of their training. Why would they choose to dive with a PADI Divemaster? a. A divemaster can handle dive logistics, and make diving more convenient and fun. b. Boat dives are only possible with a divemaster. c. Divemaster take care of every detail of individual divers' plans. d. All of the above. a. A divemaster can handle dive logistics, and make diving more convenient and fun. Acting as a good role model: a. Provides divers with a behavior pattern of responsible dive practices and habits of follow. b. Helps students by watching. c. Gives you credibility and encourages divers to consider your suggestions. d. All of the above. d. All of the above. The PADI Membership Commitment __________________, found in your PADI Instructor Manual, explains the professional and ethical behavior expected of you as a PADI Member. a. License Agreement b. Liability Release c. Code of Practice d. Active Status c. Code of Practice True or False. As a PADI Divemaster, you earn a credential that allows you to potentially work as a dive professional by assisting with PADI diver courses or conducting some PADI programs independently. True True or False. Experts easily solve problems that non experts because they have a large knowledge and experience base to draw on. True. Your role in dive planning for a group of certified divers is to: a. relieve everyone in the group of all responsibility for dive planning. b. assess the equipment needs for each individual in the group. c. provide broad planning information that divers use to plan their individual dives. d. All of the above. c. provide broad planning information that divers use to plan their individual dives. General factors to consider when evaluating dive conditions include: a. weather - wind, rain and temperature. b. tides and currents c. visibility d. All of the above. d. All of the above. One effective way to plan a dive is to: a. Ask an instructor to provide dive details. b. think through the dive from start to finish. b. manage the accident if you are the most qualified person present Choosing a vantage point may be a compromise between the best place to ____________ and the best place to ______________. a. enter the water / assess the environment. b. lend assistance / enter the water. c. watch divers / enter the water. d. watch divers / lend assistance d. watch divers / lend assistance True or False. You only need to include an environmental orientation in your dive briefing if there are certified divers who have little or no experince in the local area. False Your primary role in an instructional setting is to: a. focus on teaching. b. prepare for emergencies. c. gain experience with teaching skills. d. assist the instructor including handling logistics and helping with student diver supervision. d. assist the instructor including logistics and helping with student diver supervision. In your relationship with student divers, your primary role is to be: a. a link between them and the instructor. b. a counselor to the instructor c. a first aid expert. d. an authority a. a link between them and the instructor. When assisting an instructor with student divers in the water, a good position for you is one that allows: a. you to see the entire group and the instructor. b. you to respond quickly to problems. c. student divers to alert you easily. d. All of the above. d. All of the above. True or False. Positioning student divers in a line or semicircle with the instructor in front and you behind them at the center has the advantage of allowing the entire group to see you? True. When is it appropriate to make direct contact with a student diver? a. To provide reassurance and help a student diver calm down. b. To prevent a buoyancy problem or an inappropriate response, such as bolting to the surface. c. To control a student diver's rate of an ascent or descent. d. All of the above. d. All of the above. You are assisting an instructor in open water with a class of four Open Water Diver students. The instructor conducts an ascent skill with one student. Your likely function is to: a. make the ascent with the instructor for added control. b. stay with and supervise the remaining student divers. c. wait one minute then ascend with the remaining student divers. d. take the remaining student divers on a short tour. b. stay with and supervise the remaining student divers. While practicing the regulator recovery skill, a student diver is having difficulty with balance due to mild surge. To provide assistance, you could steady the diver by holding: a. on to the diver's right arm. b. on to the lower left corner of the diver's BCD. c. the diver's fins on the bottom. d. the right shoulder of the diver's BCD. b. on to the lower left corner of the diver's BCD. (Trick question: The student needs the right side free for regulator recovery skill.) True or False. One reason you may demonstrate a skill is to assist a student diver with a problem learning the skill. True. What characteristics does a demonstration-quality skill performance have? a. The skill is performed slowly with the critical attributes emphasized in the proper sequence. b. The skill is performed quickly, yet smoothly. c. The skill is always repeated at least four times and shown from more than one angle. d. Potential problems should be included as part of the demonstration. a. The skill is performed slowly with the critical attributes emphasized in the proper sequence. When helping a student diver who is having difficulty learning a skill: a. progress slowly so the student diver enjoys success while learning the skill. b. avoid repeating demonstrations, which waste time and confuse student divers. c. keep in mind that sequence errors are usually not important. d. All of the above. a. progress slowly so the student diver enjoys success while learning the skill. True or False. When helping a student diver overcome difficulty learning a skill, once the student diver performs the skill adequately for you, the student diver may resume training with no further evaluation. False. D. Discover Local Diving c. PADI Skin Diver Who may want to take a PADI Skin Diver course? a. A child who is too young for a scuba course, but wants to gain comfort in the water and also earn PADI certification. b. An individual who wants to learn basic skin diving skills to explore the underwater world. c. A certified diver who wants to improve skin diving skills while increase stamina and physical fitness in the water. d. All of the above d. All of the above. What is the minimum age to participate in a Scuba Review program? a. 10 b. 15 c. 18 d. There is no minimum age. a. 10 True or False. If a diver can't read, or the Suba Time-up Guidebook is not available in a language the diver understands, the diver may not participate in Scuba Review. False. The first open water scuba dive in the Discover Scuba Diving program: a. may be conducted by a certified assistant at a ratio of 2:1 b. must be conducted by a PADI Instructor. c. may have a ratio 12:1 if three certified assistants participate. d. None of the above. b. must be conducted by a PADI Instructor. True or False. You may take Discover Scuba Diving participants on an additional open water wide at ratio of 4:1. False. When supervising Discover Scuba Diving participants on an open water dive, you should: a. take photos or video of them to make the experience more enjoyable. b. position yourself so that you can make immediate physical contact with, adjust buoyancy for, and render assistance to, participants. c. let the participants lead while you follow and observe them. d. descend or ascend with only one participant at a time while others wait b. position yourself so that you can make immediate physical contact with, adjust buoyancy for, and render assistance to, participants. True or False. After certification as a PADI Divemaster, you qualify as a DSD Leader by completing an internship that includes conducting four square DSD programs in confined water under the direct supervision of a PADI Instructor. ASK BROOKE True or False. When towing a delayed surface marker buoy (DSMB), you clip the line to your gear to keep your hands free. ASK BROOKE What do you need to consider when setting a dive float? a. Finding insensitive bottom for anchoring along with an area for descending dicers to land without harming any aquatic life. b.How current, waves and the tide may affect the float and line. c. Plan for retrieving the float at the end of the dive day. d. All of the above, d. All of the above. If you need to conduct an underwater search, you should consider which of the following to determine what type of search pattern to use? a. Water conditions and visibility. b. Bottom topography and size of the search area. c. Size of the object and equipment available. d. All of the above. d. All of the above. What do you need to consider when deciding how best to supervise a deep dive? a. Diver experience, comfort, skill and attitude. b. Where the boat captain will be during the dive. c. The type of help divers may need with cameras or lights at depth. d. Distance to the nearest recompression chamber. a. Diver experience, comfort, skill and attitude. True or False. When supervising a boat dive, you should conduct a final visual roll call and make sure that you actually see each diver before the boat leaves the dive site. True. For a night dive, each diver should have at least one dive light, with a backup light recommended. True. If supervising a drift dive, it's a good idea to have each diver carry: a. a surface signal device b. a dive light. c. an adjustable depth gauge. d. a slate and pencil a. a surface signal device a. rip b. tidal c. longshore d. upwelling c. longshore A day after strong winds drive surface waters offshore, you notice that water conditions become clear and cool. This is likely due to: a. downwelling b. extreme tides. c. a longshore current. d. upwelling d. upweling Gravitational interaction between the sun, moon and earth cause ______, while wind is the most common disturbing force that causes ___________. a. tides / waves b. surge / currents c. rip currents / ocean swells. d. waves / tides a. tides / waves. True or False. As a wave moves toward shore, its energy is affected by the bottom causing the wave height to rise, eventually becoming unstable and spilling its energy as surf. True. Ways that you can encourage divers to protect the underwater world include: a. be a role model for others divers, dive carefully and be aware of equipment placement when diving. b. respect underwater cultural heritage and maritime history. c. report environmental disturbances or destruction and get involved in local environmental activities and issues. d. All of the above. d. All of the above. While outside, at a very cold temperature, you fill a balloon with air. What will happen when you take the balloon inside and place it near a heater? a. The density in the balloon will remain unchanged. b. The volume of the balloon will decrease. c. The pressure in the balloon will increase. d. The volume of the balloon will increase. d. The volume of the balloon will increase. Approximately how much denser is the air you breathe at depth of 30 metres/ 99 feet as compared to the surface? a. It is equal to the surface density. b. Two times as dense. c. Three times as dense. d. Four times a dense d. Four times a dense If a balloon is filled to 1 litre at 40 metres/ 132 feet and then released, assuming it does not explode, what will its volume be upon reaching the surface? a. 5 liters b. 4 liters c. 2 liters d. 1 litre a. 5 liters If a diver breathes from a cylinder that contains .05% carbon monoxide at a pressure of three atmospheres, it will have the same physical effect as if the diver were breathing ____________% carbon monoxide at one atmosphere. a. 1.5 b. 0.15 c. 0.02 d. 0.2 b. 0.15 Scuba divers who ascend to altitude soon after completing a dive increase their risk of decompression sickness because: a. altitude sickness can contribute to the formation of nitrogen bubbles in the blood stream. b. the partial pressure of inhaled oxygen is greater than the partial pressure of nitrogen in the tissues. c. dive tables and computers are based on surfacing at sea level, thus exposure to lower pressure increases the tissue. pressure gradient and many increase bubble formation. d. the surrounding pressure is greater, thus exposure to higher pressure may increase bubble formation. ASK BROOKE If an object is neutrally buoyant in fresh water, what will happen to the object when it's placed in salt water? a. The answer cannot be determined be determined from the information given. b. It will sink. True or False. You can compensate for the increased dead-air space resulting from breathing through a snorkel or regulator by breathing quickly and shallowly. False If a diver begins to feel light-headed because of a neck seal, the cause may be? a. Carotid sinus reflex b. Blocked jugular venous return c. Shallow water blackout d. Either a or b. d. Either a or b. Arteries carry blood _____________ the heart and veins carry blood ___________ the heart. a. toward / away from b. hemoglobin to / plasma through c. away from / toward d. red in color to / blue in color form c. away from / toward Blowing long and forcefully against a pinched nose while having equalizing your ears may result in a(n) ___________. a. sinus squeeze b. eustachian tube rupture. c. round window rupture d. oval window rupture. c. round window rupture. An hour after surfacing from a deep dive, a diver complains of fatigue and numbness in one shoulder. This diver should seek medical attention because the diver may have: a. carried equipment that was too heavy. b. decompression illness. c. contaminated air poisoning d. overexertion b. decompression isllness Because certain factors may increase the risk of decompression sickness, divers should avoid: a. driving soon after an illness or injury. b. strenuous exercise right after a dive. c. dehydration. d. All of the above. d. All of the above. Which part of the ear is most affected by a squeeze while descending? Middle ear The symptoms of a lung-epansion injury tend to appear _____________ while the symptoms of decompression sickness tend to appear ___________. a. immediately after the dive / more slowly. b. slowly over an extended time / immediately upon surfacing. c. within the first 24 hours / within minutes after the dive. d. only after surfacing / usually at depth. a. immediately after the dive / more slowly. What is the most serious lung overexpansion injury? a. Mediastinal emphysema b. Air embolism c. Pneumothorax d. Carotid sinus reflex b. Air embolism What is the most serious sign of Central Nervous System (CNS) toxicity? a. Convulsion b. Difficulty breathing c. Vertigo d. Nausea a. Convulsion True or False. A near drowning patient may seem fully recovered, however, the patient should seek medical care, because in nearly all cases, water enters the patient's lungs. True. A diver suffering from hypothermia may have which of these signs and symptoms? a. Uncontrollable shivering b. Slowed mental processes c. Appear drowsy, uncoordinated and forgetful d. All of the above. d. All of the above. The signs and symptoms of gas narcosis include: a. a mild sense of euphoria and false sense of security. b. displays of foolish behavior c. slowed thinking. d. All of the above. d. All of the above. c. An open downstream valve. d. Either a or b. d. Either a or b. What are the recommended procedures for using dive computers while diving? a. A buddy team may dive with only one computer if the divers remain side-by-side throughout the dive. b. If one diver's computers fails during the dive, the diver may continue diving using a buddy's computer. c. Each buddy must have a computer and the buddy team should follow the most conservative computer. d. Both a and b. c. Each buddy must have a computer and the buddy team should follow the most conservative computer. True or False. Before using enriched air cylinders, diver must watch the divemaster analyze the contents to confirm the percentage of oxygen, so they can set their enriched air dive computers properly. False. True or False. The Haldanean decompression model is based on the concept that decompression sickness can be avoided by keeping the pressure gradient between dissolved nitrogen in the tissues and the surrounding pressure with acceptable limits. ASK BROOKE Using the RDP above __________ requires the use of special procedures. a. 300 metres / 1,000 feet b. 500 metres / 1,500 feet c. 2400 metres / 8,000 feet d. 3000 metres / 10,000 feet a. 300 metres / 1000 feet Flying after diving recommendations suggest that divers wait __________ hours after completing a single dive and _________ hours after completing multiple dives for several days before flying in a commercial jet airliner. a. 12 / 24 b. 4 / an extended period beyond 12 c. 12 / 18 d. 24 / an extended period beyond 24 c. 12 / 18 If a diver exits the water in pressure group R, what would the diver's new pressure group be after a 45 minute surface interval? a. H b. J c. I d. G b. J A diver completes a 28 minute dive at 79 feet and after waiting for 39 minutes on the surface makes a second dive to 59 feet for 25 minutes. What is the diver's pressure group after the second dive? a. S b. T c. U d. P ASK BROOKE True or False. For the diver in the previous question, a safety stop would be required on both dives. True. What is the ending pressure group for the following three dive profile? Dive 1 - 82 ft for 20 minutes Surface interval - 44 minutes Dive 2 - 49 ft for 33 minutes Surface interval - 37 minutes Dive 3 - 38 ft for 61 minutes a. T b. K c. V d. W ASK BROOK True or False. If the diver in the previous question wanted to do a fourth dive the diver must have a minimum surface interval of at least one hour. ASK BROOKE What is the no decompression limit for a dive to 62 ft? a. 40 b. 45 c. 50 d. 56 b. 45 Use eRDPml to Solve: Divers on a live-aboard boat complete the following three dives in one day. What is their pressure group after the third dive? Dive 1 - 99 ft for 16 minutes Surface Interval - 1 hr 15 minutes Dive 2 - 54 ft for 30 minutes Surface Interval - 2 hours Dive 3 - 39 ft for 55 minutes a. K b. B c. Q d. M ASK BROOKE In the previous question, how many times did "Safety Stop 3 min - See Rule 2" appear on your eRDPml? a. 0 b. 1 c. 2 d. 3 ASK BROOK b.1? For this multilevel dive, what is the maximum allowable time for the third level of the dive? Level 1 - 115 ft for 8 minutes Level 2 - 55 ft for 12 minutes Level 3 - 40 ft for _____________