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PADI, Open Water Diver, Final Exam Review Questions and
Answers-
- 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. - Correct Answer-D
- 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. - Correct Answer-B
- 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. - Correct Answer-A
- 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. - Correct Answer-C
- 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. - Correct Answer-C
- 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. - Correct Answer-B
- 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. - Correct Answer-D
- 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 - Correct Answer-B
- 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. - Correct Answer-A
- 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. - Correct Answer-D
- 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. - Correct Answer-C
- Refer to the regulator picture. Each regulator part has a number next to it. Please choose the correct number for the choices below.
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. - Correct Answer-A
- 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. - Correct Answer-C
- 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. - Correct Answer-A
- 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. - Correct Answer-B
- 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.. - Correct Answer-C
- 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. - Correct Answer-C
- 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. - Correct Answer-A
- 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. - Correct Answer-D
- 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. - Correct Answer-B
B Share air.
This is the hand signal for share air.
See Your Skills as a Diver I - Hand Signals. - Correct Answer-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. - Correct Answer-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.
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. - Correct Answer-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. - Correct Answer-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. - Correct Answer-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. - Correct Answer-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. - Correct Answer-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.
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. - Correct Answer-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.
- 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. - Correct Answer-B
- 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. - Correct Answer-A
- 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. - Correct Answer-B
- 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. - Correct Answer-B
- 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. - Correct Answer-A
- 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. - Correct Answer-A
- 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. - Correct Answer-D
- 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 - Correct Answer-C
- 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.
A 22 meters for 40 minutes B 22 meters for 30 minutes C 20 meters for 30 minutes D 18 meters for 30 minutes - Correct Answer-B
- 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 - Correct Answer-C
