1. A Scuba cylinder should be filled with:
Select your answer Filtered Air Only Nitrogen, Oxygen, and Carbon Dioxide Pure Oxygen Depends on the depth and duration of the dive.
 

2. Scuba cylinders are to have hydrostatic testing done a minimum of every ________ years and need to be visually inspected internally at least every ________.
Select your answer 5, Air fill 5, year 2, year 10, 5 years
 

3. Sound travels about _______ in water than in air.
Select your answer 2 times faster 2 times slower 4 times faster 4 times slower
 

4. Diving with to much weight on your weight belt is OK, just use a larger BC.
Select your answer True, the BC will provide lift to overcome the weight belt. True, the diver's trim is much better. False, basic divers should be neutral at the surface. False, the diver needs to have positive buoyancy at depth.
 

5. Two fully equipped scuba divers descend to 55 feet and desire to remain at that depth for the entire dive. What state of buoyancy best allows them to do this at that depth?
Select your answer Neutral Positive Negative Static
 

6. To maintain neutral buoyancy during descent, a diver should:
Select your answer Add air to the BC. Remove air from the BC Add lead weights to the belt Remove lead weights from the belt
 

7. To maintain neutral buoyancy during ascent, a diver should:
Select your answer Add air to the BC. Remove air from the BC Add lead weights to the belt Remove lead weights from the belt
 

8. Which of the following does not affect buoyancy?
Select your answer The diver's Surface Air Consumption Rate The amount of weight worn on the belt. The diver's breathing patterns The diver's depth
 

9. A proper breathing pattern for a scuba diver should be:
Select your answer Faster than normal. Shallower than normal. Slower and deeper than normal. Faster and shallower than normal.
 

10. One atmosphere of pressure is equaled to ______ feet of salt water.
Select your answer 34 33 14.7 44.1
 

11. What is the total pressure exerted on a diver in 99 feet of sea water?
Select your answer 44.1 psi 58.8 psi 3 atm 2 atm
 

12. The greatest pressure change occurs between:
Select your answer 15 feet and 30 feet 99 feet and 132 feet 60 feet and 80 feet 0 and 15 feet
 

13. The effects of nitrogen narcosis can be relieved by:
Select your answer Resting and breathing Oxygen after each dive. Going to a decompression chamber Slowly ascending to a shallower depth Buddy Breathing using an Octopus regulator
 

14. Breath holding while scuba diving can cause:
Select your answer An air embolism Mediastinal Emphysema Pneumothorax All of the above
 

15. You should begin to equalize your ears as soon as you feel pain.
Select your answer True, to ascend further will cause ear problems. True, the discomfort and pain is the signal to equalize your ears. False, equalize early and often before you feel pain. False, pain in your ears is normal while scuba diving.
 

16. An air embolism can best be described as:
Select your answer Air trapped in the lungs Air blocking the flow of blood The lack of air below 100 feet Flatulence
 

17. What causes bubble formation in the blood during ascent?
Select your answer Ascending to faster than 30 feet per minute. Ascending without venting the BC. Ascending slower than 30 feet per minute. The 80% Nitrogen in air breathed at the surface
 

18. The nitrogen in the air breathed at any depth:
Select your answer Has no effect on the diver Has an effect on the diver's ability to process Oxygen Is absorbed into the body tissues Effects the diver's respiratory system.
 

19. When diver is experiencing a mild case of Hyperthermia, what should the diver do to relieve this condition?
Select your answer Get out of the water and warm up. Get in the water and cool off. Nothing, this condition is normal Wear a neoprene hood on the next dive.
 

20. A diver who disregards minor ear pain while descending risks:
Select your answer An ego embolism Permanent hearing loss Alternoberic vertigo There is no risk - minor ear pain is normal
 

21. Depth has a significant effect on air consumption.
Select your answer False, air consumption is the same at any depth. False, the diver's air consumption depends on the size of the tank used. True, the diver will use more air at depth than the surface. True, the diver will use less air at depth than the surface.
 

22. If your air consumption is 30 psi per minute on the surface, what is your air consumption at 66 feet of sea water.
Select your answer 60 psi per minute 90 psi per minute 120 psi per minute 30 psi per minute
 

23. If your air consumption is 18.5 psi per minute on the surface, what is your air consumption at 99 feet of sea water.
Select your answer 55.5 psi per minute 74.0 psi per minute 18.5 psi per minute 37.0 psi per minute
 

24. When Scuba diving buddies are separated underwater, the standard practice is to:
Select your answer Tap on your tank so that you buddy can locate you. Exit the water and wait on the surface for your buddy. Activate your pre-arranged "lost buddy plan" Search 15 feet above and 15 feet below you.
 

25. Almost all injuries from aquatic animals are caused by the _________ actions on the part the diver.
Select your answer Defensive Offensive Planned Aggressive
 

26. Most diving problems occur:
Select your answer At the surface At depths below 60 feet At depths below 80 feet In the surf zone near shore.
 

27. When diving from an anchored boat in light current, you should begin your dive by swimming:
Select your answer In the direction of the current. Against the direction of the current. At a right angle to the current. Doesn't matter, but make sure you have your snorkel.
 

28. Underwater communications should be:
Select your answer Discussed and agreed upon before the dive Written on a slate to prevent misunderstanding Used only when absolutely necessary Accomplished by using a tap code on the tank
 

29. Diving buddy teams should always:
Select your answer Wear matching equipment Have the same certification level Agree on a leader and have a lost buddy plan Log their dives with a decompression chamber
 

30. The MOST desirable option in an out-of-air situation is:
Select your answer Buddy breathing - Passing the main regulator Buddy breathing with an octopus regulator Independent buoyant ascent - Drop the weight belt Swim to the surface as fast as you can
 

31. An out-of-air situation can best be avoided by:
Select your answer Computing your air consumption after each dive. Monitoring your air pressure gauge during the dive. Limiting your dives to 30 minutes. Never exceeding the nitrogen ingassing times on the Dive Tables.
 

32. The recommended procedure for rescuing an unconscious diver at the surface is:
Select your answer Establish personal positive buoyancy Making contact with the diver Pull the diver to a face-up position All of the above
 

33. The most important procedure for rescuing an unconscious diver underwater is:
Select your answer Get the diver to the surface. Check the air supply Determine why the diver is unconscious Check your air supply to ensure that you can make it to the surface.
 

34. Decompression sickness can best be avoided by:
Select your answer Breathing O2 after every dive. Ascending from all dives slower than 30 feet per minute. Never exceed the TNT on any dive. Always use the dive tables after the dive.
 

35. Special training and knowledge is not needed for diving at higher elevations. The dive tables work for any altitude.
Select your answer True, the Ocean is always at Sea level! True, dive tables are designed to work at any altitude. False, you should get a briefing and special tables for altitude diving. False, diving at altitude is prohibited.
 

36. What is Residual Nitrogen?
Select your answer Excess Nitrogen remaining in the body tissues after diving. Residue from Nitrogen left in a scuba cylinder Nitrogen that must be mixed with air. The last 500 pounds of air in the tank used for safety.
 

37. What is the definition of a repetitive dive?
Select your answer A dive to the same depth for the same time. Practicing your ascent and descent rates repetitively. Diving with the same buddy a second time Any dive that has a previous SIT of more than 10 minutes and less than 24 hours.
 

38. What is the purpose of a safety decompression stop at 15 feet?
Select your answer It adds residual nitrogen to the actual dive time. It allows the body to eliminate nitrogen before surfacing. It allows the slower ascending buddy to catch up. It is used by diver's to re-group before surfacing.
 

39. If a diver uses 2200 psi of air during a dive to 99 feet for 15 minutes, what is the diver's Surface Air Consumption Rate?
Select your answer 60.89psi per minute 123.54 psi per minute 36.66 psi per minute 22.06 psi per minute
 

40. A diver showing symptoms of decompression sickness (the bends) should:
Select your answer Be taken to a depth of 15 feet immediately for decompression Discontinue diving until the symptoms stop Be taken to the nearest decompression chamber Rest, breathe pure oxygen, and discontinue diving for the day.

Activate the Dive Tables - printable

41. A diver dives to 95 feet for 20 minutes, waits at the
surface for 2 hours and 35 minutes, then dives 61 feet for 10 minutes.
What is the diver's end of dive letter group?
Select your answer B F H J
 

42. A diver dives to 67 feet for 39 minutes, waits at the
surface for 1 hour and 12 minutes, then dives 61 feet for 10 minutes.
What is the diver's end of dive letter group?
Select your answer I J K H
 

43. A diver dives to 101 feet for 15 minutes, waits at the
surface for 2 hours and 55 minutes, then dives 80 feet for 20 minutes.
What is the diver's end of dive letter group?
Select your answer E F G H
 

44. A diver dives to 25 feet for 56 minutes, waits at the
surface for 1 hours and 17 minutes, then dives 25 feet for 49 minutes,
then waits on the surface for 1 hour.
How long can the diver spend at 25 feet?
Select your answer 73 minutes 49 minutes 81 minutes 57 minutes
 

45. A diver dives to 60 feet for 20 minutes, waits at the
surface for 1 hour, then dives 60 feet for 30 minutes,
then waits on the surface for 1 hour,
then dives to 60 feet for 20 minutes.
Is this dive safe for basic divers according to the dive tables?
Select your answer No, the diver should not have made the second dive. No, the diver should not have made the third dive. Yes, as long as the diver stops at 15 feet for 3 minutes. Yes, the depth is not enough to get the bends.
 

46. How can dive time be increased safely on repetitive dives?
Select your answer SIT longer SIT longer or dive shallower Monitor air consumption more closely Subtract the RNT from the TNT.
 

47. You are a "G" diver planning a repetitive dive to 52 feet.
Which of the following is not vital to your planned dive?
Select your answer A depth gauge An underwater thermometer An air pressure gauge A timekeeping device
 

48. When diving at less than 40 feet, Dive Tables are not required.
Select your answer True, decompression sickness is not possible above 40 feet. True, the tables are designed for dives below 40 feet. False, the diver should use the 40 feet depth on the tables. False, 40 feet or less requires special tables.
 

49. A diver dives to 67 feet for 41 minutes.
How long must the diver wait at the surface to dive
to the same depth for the same time?
Select your answer 8 hours and 22 minutes 10 minutes 1 hour 2 hours 47 minutes
 

50. A diver's current letter group is J.
How long must the diver wait at the surface to dive to
80 feet for 15 minutes?
Select your answer 2 hours, 12 minutes 3 hours, 5 minutes 5 hours, 23 minutes 8 hours, 45 minutes
 
 

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