PADI, Open Water Diver, Final Exam Review

12) Refer to the regulator picture. Each regulator part has a number next to it. Please choose the correct number for the choices below. regulator first stage, regulator second stage alternate air source second stage low pressure inflator hose for the BCD instrument console/gauges/computer

1. regulator first stage, 2. regulator second stage, 3. alternate air source second stage, 4. instrument console/gauges/computer, 5. low pressure inflator hose for the BCD

B Share air. This is the hand signal for share air. See Your Skills as a Diver I - Hand Signals.

26) Choose the best answer for the signal shown from the choices provided. A Turn the dive. B Share air. C I am thirsty. D I have lost my mouthpiece.

B Search for a minute and then go up to reunite with my buddy at the surface. The general procedure for buddy separation is to search for no more than one minute, then surface to reunite. See Being a Diver II - The Buddy System.

27) If I were separated from my buddy, the general procedure is to A go up immediately, wait a minute and then go back down. B search for a minute and then go up to reunite with my buddy at the surface. C go to the surface immediately and get out of the water. D look for my buddy's bubbles and follow the bubbles to find my buddy.

D In midwater When descending and ascending in reduced visibility, you can feel disoriented, especially in mid-water when you can't see either the bottom or the surface. See Being a Diver III - Visibility.

28) I am most likely to become confused about which way is up or down _____________. A at the surface B near the surface C on the bottom D in midwater

C Dive against or into the current. By swimming into a current for the first part of a dive, you can let it carry you back to where you started during the second part. See Being a Diver III - Water Movement.

29) I feel a mild current at the start of my dive. How should I begin this dive? A Dive with the current. B Dive across the current. C Dive against or into the current. D Dive at an angle to the current.

A Visibility (how far you can see underwater). The nature and composition of particles in the water affects visibility. Large, heavy material - like from gravel and rock bottoms - settles out of the water quickly, restoring visibility quickly. Small, light particles - like from mud and clay bottoms - can remain suspended for very long periods. See Being a Diver III - Visibility.

30) What the bottom is made of can cause big changes in A visibility (how far you can see underwater). B temperature (how warm the water is). C current (the movement of water). D buoyancy (whether you sink or float).

D Trying to defend themselves. Nearly all aquatic life injuries result from defensive actions by the animals. You can generally avoid injuries by being aware and respectful of aquatic organisms. See Being a Diver III - Aquatic Life.

31) Most injuries caused by aquatic animals happen because the animals are A hungry. B curious. C injured. D trying to defend themselves.

D Divers who are distressed or panicked often have their masks on their foreheads and don't use their breathing equipment. They usually have wide, unseeing eyes, quick and jerky movements, and do not follow instructions. They need immediate help because they may continue to struggle until exhausted. See Being a Diver III - Surface Problem Management - Responsive Diver.

32) A diver at the surface is moving quickly and jerkily, has the mask off the face, the regulator/snorkel is out of the mouth, and the diver does not respond to directions. The diver is A giving the okay signal. B performing a predive safety check. C excited about the dive. D showing signs of distress (trouble).

A Switch to my buddy's alternate air source. When out of air, your best option is usually to make an alternate air source ascent using your buddy's alternate air source. See Being a Diver III - Underwater Problem Management.

33) I am close to my buddy and realize I am out of air. The best response is to A switch to my buddy's alternate air source. B make a controlled emergency swimming ascent (swim up to the surface making a continuous sound, like ah-h-h-h). C make a buoyant emergency ascent (dropping my weight system). D switch to my buddy's alternate air source and continue the dive.

C Hold the regulator without sealing my mouth around the mouthpiece and "sip" the air I need as I ascend (go up). You can breathe from a freeflowing regulator by "sipping" air as you need it. Don't seal your mouth around the mouthpiece. Begin your ascent promptly, because the freeflow will exhaust your air supply quickly. See Being a Diver III - Underwater Problem Management.

34) If my regulator begins to free flow (release air continuously) while underwater, I should A make a controlled emergency swimming ascent. B do nothing special. C hold the regulator without sealing my mouth around the mouthpiece and "sip" the air I need as I ascend (go up). D make a buoyant emergency ascent.

A Ascend using my buddy's alternate air source / make a controlled emergency swimming ascent You can make a normal ascent when very low on air, but your cylinder isn't completely empty. When out of air, your best option is usually to make an alternate air source ascent using your buddy's alternate air source. Make a controlled emergency swimming ascent when fairly shallow and the surface is closer than a buddy with an alternate air source. Make a buoyant emergency ascent when your buddy is not near and you're deep enough that you don't think you can make it to the surface by just swimming. See Being a Diver III - Underwater Problem Management.

35) Although it shouldn't have happened, on a dive I fail to watch my SPG and run out of air. If my buddy is close by, my best option is to __________. Another option is to _____________, if I'm in shallow water and the surface is closer than my buddy. Note: you may have to scroll down to see the whole question or to submit your answer. A ascend using my buddy's alternate air source / make a controlled emergency swimming ascent B ascend using my buddy's alternate air source / make an buoyant emergency ascent C make a normal ascent / ascend using my buddy's alternate air source D make a controlled emergency swimming ascent / make a normal ascent

A To check if the diver is breathing. Your priority when assisting someone who is unresponsive is to make sure the diver is breathing. Provide rescue breaths as necessary. Contact emergency medical care. See Being a Diver III - First Responder Care for Diving-Related Emergencies.

36) There is an injured diver who is out of the water and is not responding to touch or my voice. The first thing to do would be A to check if the diver is breathing. B to keep the diver warm. C to decide what happened. D to provide oxygen.

D Reduce the risk of breathing contaminated air. Contaminated air is rare because it's easy to avoid by getting your cylinders filled at reputable scuba air sources - namely, professional dive operations. Dive centers and resorts take care of their fill systems and know the value of regular air testing. See Being a Diver IV - Contaminated Air.

37) I should have cylinders filled at a dive center I trust, not use air that tastes or smells bad, nor use air from a compressor designed to fill car tires. This is important to A decrease the likelihood of gas narcosis. B increase the enjoyment of my dive. C reduce the risk of lung overexpansion injuries. D reduce the risk of breathing contaminated air.

A Ascend (go up) to a shallower depth. If you or a buddy experience narcosis, immediately ascend to a shallower depth. Narcosis generally fades quickly when you return to a shallower depth. See Being a Diver V - Gas Narcosis.

38) Divers who act foolishly at depth due to gas narcosis may start acting normally again if they A ascend (go up) to a shallower depth. B breathe slowly and deeply. C signal their buddy for help. D dive within no stop limits.

B Dive while tired, cold, sick, thirsty or injured. Secondary factors that can contribute to developing decompression sickness include fatigue, dehydration, cold, poor fitness, high body fat, illness, injuries, age, alcohol consumption before or after a dive, and vigorous exercise before, during or immediately after a dive. See Being a Diver IV - Decompression Sickness.

39) I am likely to increase the risk of decompression sickness (DCS) if I A dive in poor visibility, strong moving water, and rough seas. B dive while tired, cold, sick, thirsty or injured. C do not look after my equipment. D am using a dive computer.

C Breathe 100 percent oxygen and contact emergency medical care. For a suspected case of decompression illness, contact emergency medical care, lie down and breathe emergency oxygen. Almost all cases of decompression illness require treatment in a recompression chamber. Don't delay first aid and getting to treatment. See Using Dive Computers and Tables II - First Aid Treatment for Decompression Illness.

40) If I think I have decompression sickness I should A stop diving until I feel better. B go back in the water. C breathe 100 percent oxygen and contact emergency medical care. D see a doctor when I can.

B Reading the manufacturer's instructions. Before you dive with a computer, you need to read the manufacturer's dive computer manual. It's your responsibility to read and understand the manufacturer's instructions. See Using Dive Computers and Tables I - Planning Dives with Your Computer.

41) The first step in using my dive computer is A setting the time and date. B reading the manufacturer's instructions. C calibrating it for enriched air nitrox. D setting it for fresh or salt water.

13) When I look at things underwater they often seem ___________ than they look on the surface. A larger and/or nearer B larger and/or further away C smaller and/or further away D smaller and/or nearer

A

17) As I descend (go down), my wet suit will A compress (feel thinner) from water pressure, and I will lose buoyancy and warmth. B expand (feel thicker) from water pressure, and I will gain buoyancy and warmth. C remain the same thickness from the water pressure, and there will be no change in warmth. D expand (feel thicker) from water pressure, and I will lose buoyancy and warmth.

A

19) Choose the best answer for the signal shown from the choices provided. A Stop, hold it, stay there. B Go back. C Please be quiet. D Go up.

A

23) Choose the best answer for the signal shown from the choices provided. A Okay? Okay. (on the surface at a distance) B I have cramps in my legs. C I would like to snorkel in. D Boat pick up, I have air.

A

3) I turn a glass upside down, trap the air in it by putting it in water, and then I take the glass down to 10 meters. The air space would A become half the size it was at the surface. B not change in size. C become 1/3 the size it was at the surface. D become 2/3 the size it was at the surface.

A

43) When making computer assisted dives A each diver needs a personal computer. B each buddy team needs a computer C up to four divers may share a computer. D all divers may follow the dive guide's computer.

A

46) If I'm diving in cold water or under strenuous conditions A I should add an extra safety margin and stay well within my computer's limits. B nitrogen absorption will be slower so I can stay longer. C my dive computer will probably not work at all. D I do not need to do anything special.

A

47) If my computer fails during a dive, I can use my backup computer to continue the dive. If I'm not wearing a backup, I should A ascend (go up), make a safety stop and end the dive. B borrow my buddy's backup. C continue the dive until low on air, but make no repetitive dives. D end the dive and surface immediately.

A

53) I dive to 17 meters for 47 minutes. After a 30-minute surface interval, I do a second dive to 17 meters. Losing track of time, I notice my bottom time is now 25 minutes. According to the General Rules, what should I do? Note: you may have to scroll down to see the whole question or to submit your answer. A Ascend (go up) right away to 5 meters and stay there for at least 8 minutes before going to the surface, and not dive for six hours. B Go to the surface right away and contact the nearest recompression chamber. C Ascend (go up) right away to 5 meters and stay there for 3 minutes before going to the surface. D Ascend (go up) to 3 meters and stay there until I use up my air, and not dive for 24 hours.

A

9) How often should I take my scuba cylinder to be visually inspected by my dive center? A Once a year. B Once every two years. C Every six months. D Every five years.

A

16) If I work too hard and find it difficult to breathe underwater, I should A inflate my BCD. B stop all activity and rest, holding onto something for support if possible. C swim immediately to my buddy and signal for help. D do a controlled emergency swimming ascent (CESA - swimming up to the surface saying the ah-h-h-h sound).

B

2) I blow up a balloon, tie it off, and take it to the bottom of the swimming pool. What will happen to the balloon and the air inside it? A The balloon will get bigger and the air inside the balloon will be less dense (molecules move further apart). B The balloon will get smaller and the air inside the balloon will be more dense (molecules move closer together). C The balloon will get bigger and the air inside the balloon will be more dense. D The balloon will get smaller and the air inside the balloon will be less dense.

B

20) Choose the best answer for the signal shown from the choices provided. A Which is the right way? B Something is wrong. C Go up and down. D Everything is okay.

B

25) Choose the best answer for the signal shown from the choices provided. A Look at me. B Low on air. C Share air. D Go up.

B

42) When planning a dive with a computer, I use the "plan" or "no stop scroll" mode to determine A the maximum depth of the previous dive. B the maximum allowable time limits for depths (typically in 3-meter). C whether my computer is compatible with my buddy's computer. D the best settings for my backup computer.

B

44) It's important that I do not turn off a dive computer between dives because A the divemaster may object because I can't recall the dive information for logging. B it would lose memory of the previous dive and not calculate repetitive dives correctly. C it won't come back on, or it may take a long time to power up. D doing so is hard on the batteries and may cause the computer to fail.

B

45) If I accidentally exceed my computer's no stop limits, I should A make a safety stop for three minutes at 5 meters. B follow the computer's instructions for decompression. C surface immediately, breathe oxygen and report my condition to the divemaster. D make a controlled ascent and refer to the manufacturer's literature for decompression procedures.

B

51) I dive to 18 meters for 33 minutes. After a 30-minute surface interval, I plan to dive to 17 meters. What is the maximum allowable time for the second dive? A 21 minutes B 32 minutes C 23 minutes D 19 minutes

B

52) I am planning to make two dives. The first dive is to 18 meters for 49 minutes. The second dive is to 18 meters for 24 minutes. How long would I have to stay on the surface (minimum surface interval) to do these two dives safely? A 26 minutes B 32 minutes C 54 minutes D 59 minutes

B

55) My buddy and I are planning to dive at a site where the water and air temperature are near freezing. We plan to dive to 18 meters for 30 minutes. What dive profile would we use when planning our dive? A 22 meters for 40 minutes B 22 meters for 30 minutes C 20 meters for 30 minutes D 18 meters for 30 minutes

B

6) The best place for me to position an alternate air source is A loose by my side so I can find it fast. B in the triangle area formed by my chin and the lower corners of my rib cage. C to the base of my cylinder. D to the back of my BCD between my shoulder blades and waist.

B

8) If my cylinder of air lasts 60 minutes while I am at the surface breathing normally, assuming all else is the same, how long will it last at 20 meters breathing normally? A 60 minutes B 20 minutes C 15 minutes D 12 minutes

B

11) Which of the following is part of proper care for my scuba cylinder? A Sand and repaint it every year. B Dry it in the sun. C Keep some air in it. D Have it pressure tested every month.

C

15) Unless there are laws that say differently, I should stay within ___________ of my dive flag. Boats should stay at least 100 ft away. A 200 ft. B 100 ft. C 50 ft. D 17 ft.

C

18) I know I am properly weighted for diving if I A float at neck level with my BCD about half full while I am holding a normal breath of air. B sink slowly holding a normal breath of air and with an empty BCD. C float at eye level while holding a normal breath of air and with an empty BCD. D sink easily with a partially filled BCD.

C

21) Choose the best answer for the signal shown from the choices provided. A My finger is cold. B Go around the rock. C Okay? Okay. D Stay together..

C

22) Choose the best answer for the signal shown from the choices provided. A Wave to friends on the beach. B I need more weight. C Distress, help. D I need the boat to pick me up.

C

4) If I am not able to equalize (clear) my body air spaces, it may be because I have A seasickness. B heart disease and high blood pressure. C a cold, allergy or another medical problem. D anxiety.

C

49) As a new PADI Open Water Diver, the recommended maximum depth is ______________, or the actual depth I reached in training, if shallower. The maximum depth for all recreational scuba divers, even experienced divers, is ______________. A 10 meters/ 18 meters B 12 meters / 30 meters C 18 meters / 40 meters D 24 meters / 58 meters

C

5) If my ears or sinuses hurt while I am descending (going down), it usually means A my air spaces are equalized. B my mask strap is too tight. C I am feeling a squeeze and need to equalize. D my mask is too small.

C

56) I am an Advanced Open Water Diver. I plan to do three dives. The first dive is a 25-meter dive for 22 minutes followed by a 52-minute surface interval. The second dive is to 20 meters for 27 minutes followed by a surface interval of 62 minutes. My third dive is to 18 meters. What would be my maximum allowable bottom time for this third dive? A 21 minutes B 54 minutes C 34 minutes D 25 minutes

C

1) If an object is neutrally buoyant (does not sink or float) in fresh water, the same object placed into salt water would A sink. B either sink or float. C do nothing. D float.

D

10) The difference between DIN valves and yoke valves is that DIN valves A are made from durable plastic. B contain a spring-operated shutoff valve that is held open by cylinder pressure. C have an o-ring in them. D have threaded openings to screw the regulator into.

D

14) ___________ travels faster in water than it does in air. This is why you cannot easily tell where it comes from. A Light B Current C Aquatic life D Sound

D

24) Choose the best answer for the signal shown from the choices provided. A Which way to the boat? B Stay at this depth. C Go this way. D Out of air.

D

48) I make two dives in one day and am flying home on a commercial plane. I should wait until my computer says I can fly or ________ hours, whichever is longer. A 0 B 48 C 24 D 18.

D

50) When diving at an altitude above 300 meters A I do not need to follow special procedures. B I can't use my dive computer. C I do not need to follow special procedures, but my computer may need to be set for the altitude. D I need to follow special procedures and may need to set my computer for the altitude.

D

54) A group of Advanced Open Water Divers plans to make two dives. The first dive is on a reef in 22 meters of water for 20 minutes. The group then remains on the surface for 1 hour. The second dive is on a wreck in 18 meters of water, with a planned bottom time of 30 minutes. What will be the ending pressure group after the second dive? A L B K C S D R

D

7) Lung overexpansion injuries can be caused by A scuba diving without a buddy. B continuing a dive when not properly weighted. C not drinking enough water before scuba diving. D holding my breath while scuba diving.

D