PADI Open Water Diver Final Exam with 100% Correct Answers 2023, Exams of Insurance law

Download PADI Open Water Diver Final Exam with 100% Correct Answers 2023 and more Exams Insurance law in PDF only on Docsity! PADI Open Water Diver Final Exam with 100% Correct Answers 2023 As a newly certified PADI Open Water Diver, I will be trained to dive with a buddy as deep as __________. a. 10 metres/30 feet b. 18 metres/60 feet c. 30 metres/100 feet d. 40 metres/130 feet - ✓✓✓b. 18 metres/60 feet Certain medical conditions can be hazardous while diving, so it is important to answer all questions on the Medical Statement honestly and completely. a. true b. false - ✓✓✓a. true PADI courses are performance-based. This means that to be certified, I must... a. meet specific performance requirements b. spend a given number of hours in training c. simply pay for the course - ✓✓✓a. meet specific performance requirements Failure to complete assigned independent study can create significant delays, and my instructor may have to cancel and reschedule sessions until I complete the assignment. a. true b. false - ✓✓✓a. true When diving in a new dive environment, two benefits of seeking an orientation, supervision, and/or additional training are that it helps me avoid problems and that it helps me enjoy the dive more. a. true b. false - ✓✓✓a. true What is the pressure change for each 10 metres/33 feet of depth change? - ✓✓✓There is a pressure change of 1 bar/ata for every 10 metres/33 feet of depth change. What is the relationship between pressure and the volume and density of air? - ✓✓✓As pressure increases, gas volume decreases and gas density increases. Right now, you are under pressure exerted by the air in the atmosphere that surrounds you. This is actually the __________ of the air. - ✓✓✓weight Underwater, you're under more pressure because water also has __________, which combines with the atmosphere's pressure. - ✓✓✓weight At sea level the pressure is fairly uniform, and is expressed as... - ✓✓✓one bar (metric) or one atmosphere (imperial — abbreviated ata) What is the relationship between my depth in water and the pressure? - ✓✓✓As depth in water increases, pressure increases. As depth in water decreases, pressure decreases. Because water is much denser and heavier than air, __________ feet exerts the same pressure as the whole atmosphere. - ✓✓✓10 metres/33 feet How does pressure increase underwater? - ✓✓✓Pressure increases by one bar/ata for each 10 metres/33 feet you descend (go down). How does pressure decrease underwater? - ✓✓✓Pressure decreases one bar/ata for every 10 metres/33 feet you ascend (come up). At 0 metres/feet (sea level), what is the total pressure? - ✓✓✓1 bar/ata At 10 metres/33 feet, what is the total pressure? - ✓✓✓2 bar/ata — one of air plus one of water At 20 metres/66 feet, what is the total pressure? - ✓✓✓3 bar/ata — one of air plus two of water At 30 metres/99 feet, what is the total pressure? - ✓✓✓4 bar/ata Pressure changes affect the volume and density of air (or any other gas). As the pressure increases — as you go deeper — why does a gas volume decrease? Why does gas density increase? - ✓✓✓A gas volume decreases because the gas molecules get compressed. Gas density increases because all the molecules are there, but they're packed into a smaller area. If you go from the surface to 10 metres/33 feet, what happens to your air volume and air density? - ✓✓✓Your air volume decreases by 1/2, and your air density will be doubled. If you go from 10 metres/33 feet to 20 metres/66 feet, what happens to your air volume and air density? - ✓✓✓Your air volume decreases by 1/3 the surface volume, and your air density will be 3 times the surface density. If you go from 20 metres/66 feet to 30 metres/99 feet, what happens to your air volume and air density? - ✓✓✓Your air volume decreases by 1/4 the surface volume, and your air density will be 4 times the surface density. If you go from 30 metres/99 feet to 40 metres/132 feet, what happens to your air volume and air density? - ✓✓✓Your air volume decreases by 1/5 the surface volume, and your air density increases by 5 times the surface density. c. reducing the surrounding pressure d. increasing the surrounding pressure - ✓✓✓a. adding air to an air space I should equalize... a. when I feel pain or discomfort b. only if I can't tolerate the pain or discomfort c. before I feel pain or discomfort d. when I reach the bottom - ✓✓✓c. before I feel pain or discomfort I'm descending and discover I can't equalize. The first thing I would do is... a. equalize more forcefully b. stop my descent and signal my buddy/the instructor c. slow my descent and see if the problem corrects itself - ✓✓✓b. stop my descent and signal my buddy/the instructor I equalize gently because an extended, forceful equalization can cause permanent damage to my ears and hearing. a. true b. false - ✓✓✓a. true On a day I plan to go diving, I wake up with my sinuses blocked due to a cold or allergy, I should... a. take an approved decongestant so I will be able to equalize b. plan to take a lot longer as I descend c. cancel the dive until I'm well - ✓✓✓c. cancel the dive until I'm well When scuba diving, normal breathing keeps your lungs equalized to the normal pressure. a. true b. false - ✓✓✓a. true What is the most important rule in scuba diving? - ✓✓✓The most important rule in scuba diving is to breathe continuously and never ever hold your breath. What can happen if I don't follow the most important rule in scuba diving? - ✓✓✓Expanding air can cause serious lung over expansion (lung rupture) injuries that are difficult to treat and can cause paralysis and death by forcing air into the bloodstream and chest cavities. What is a "reverse block"? - ✓✓✓A reverse block, also called a reverse squeeze, results when expanding air becomes trapped in a body air space. What should I do if I feel discomfort in my ears, sinuses, stomach, intestines, or teeth while ascending? - ✓✓✓Immediately slow or stop your ascent. Descend a meter/few feet to reduce the discomfort and give the trapped air time to work its way out. The most important rule in scuba diving is to... a. always dive with a buddy b. breathe continuously and never hold your breath c. check your air supply every 5 minutes - ✓✓✓b. breathe continuously and never hold your breath Failure to follow the most important rule in scuba diving can cause severe lung over expansion injuries, which can result in paralysis or death. a. true b. false - ✓✓✓a. true During ascent I feel discomfort in my ears. I should... a. continue my ascent at a slightly faster rate b. stop, descend slightly and allow trapped air to work its way out c. use a decongestant before my next dive d. equalize by blowing gently against blocked nostrils - ✓✓✓b. stop, descend slightly and allow trapped air to work its way out How does depth affect how long my air supply lasts? - ✓✓✓Because scuba provides air at the surrounding pressure, as you go deeper each breath takes more air from your scuba cylinder. Therefore, the deeper you are, the faster you use your air. What's the most efficient way to breathe dense air underwater? - ✓✓✓The most efficient way to breathe dense air underwater is by taking slow, deep breaths. Pace yourself and dive relaxed in order to save energy and prevent over exertion. How do I breathe to reduce anxiety when under stress? - ✓✓✓Slow, deep breathing will help you to reduce stress and anxiety. What are my four breathing rules as a scuba diver? - ✓✓✓1. Breathe continuously and never ever hold your breath. 2. Breathe slowly and deeply. 3. Do not allow yourself to get winded or out of breath. 4. If faced with a problem, stop, then reduce anxiety by maintaining or restoring slow, deep breathing. My buddy and I descend to 12 metres/40 feet. I would expect to use my air __________ at 6 metres/20 feet. a. slower than b. at the same rate as c. faster than - ✓✓✓c. faster than The most efficient way to breath dense air underwater is to breathe... a. shallowly and slowly b. shallowly and rapidly c. deeply and slowly d. deeply and rapidly - ✓✓✓c. deeply and slowly My body responds to anxiety with increased breathing, but slow breathing helps reduce anxiety. a. true b. false - ✓✓✓a. true Which of the following are among the breathing rules I follow as a diver? (Choose all that apply.) a. Breathe continuously and never ever hold my breath. b. Breathe slowly and deeply. c. Do not allow myself to get winded or out-of-breath. d. If faced with a problem, stop, then maintain or restore slow, deep breathing. - ✓✓✓a. Breathe continuously and never ever hold my breath. b. Breathe slowly and deeply. c. Do not allow myself to get winded or out-of-breath. d. If faced with a problem, stop, then maintain or restore slow, deep breathing. What is buoyancy? What causes it? - ✓✓✓Buoyancy is an upward force acting on an object in water, which is why you feel "lighter" in water. This force is caused by the water displaced (pushed aside) by the object, and is equal to the weight of the water displaced. What are the three types of buoyancy? Describe them. - ✓✓✓Positive buoyancy, which occurs when an object weighs less than the water it displaces and the object floats. Negative buoyancy, which occurs when an object weighs more than the water it displaces and the object sinks. Neutral buoyancy, which occurs when an object weighs the same as the water it displaces and the object neither floats nor sinks. What two pieces of equipment do I normally use to control buoyancy? - ✓✓✓your weight system and your BCD or Buoyancy Control Device How does descending affect your buoyancy? How do you offset this? How does ascending affect your buoyancy? What happens to the air you aded to your BCD? How do you control this? - ✓✓✓When you descend, volume decreases, which reduces water displaced and reduces your buoyancy making you more negatively buoyant. You offset this by adding air to your Buoyancy Control Device. When you ascend, the gas volume in your gear re-expands, which increases your buoyancy. The air you added to your BCD also expands and further increases your buoyancy. To control your buoyancy, as you ascend you vent (release) the air you added on the way down. How does breathing affect my buoyancy? - ✓✓✓When you inhale, your chest expands, increasing your volume, displacement, and buoyancy. When you exhale, you contract your chest, decreasing your volume, displacement, and buoyancy.