Laurie's Excellent Scuba Certification Quiz #1

81 Questions | Total Attempts: 86

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Certification Quizzes & Trivia

These questions are from the information given to me by my scuba instructor. I wrote this test to help me study for the final scuba exam. The information is for a recreational intro course.


Questions and Answers
  • 1. 
    What does SCUBA stand for?
    • A. 

      Self Controlled Underwater Breathing Apparatus

    • B. 

      Self Compressed Underwater Breathing Apparatus

    • C. 

      Self Contained Underwater Breathing Apparatus

    • D. 

      Self Controlled Underwater Boyancy Apparatus

  • 2. 
    What is the No. 1 rule of Scuba Diving?
    • A. 

      Wait 30 min. after a meal before diving.

    • B. 

      Always dive with a buddy.

    • C. 

      Don't ascend too quickly.

    • D. 

      While scuba diving never hold your breath.

  • 3. 
    What is the second rule of Scuba Diving?
    • A. 

      Always dive with a buddy.

    • B. 

      Wait 30 min. after a meal before diving.

    • C. 

      While diving never hold your breath.

    • D. 

      When scuba diving don't ascend too quickly.

  • 4. 
    How fast should you ascend?
    • A. 

      1/2 the speed of your smallest air bubbles, 30 feet per min.

    • B. 

      1/2 the speed of your largest air bubbles, 30 feet per min.

    • C. 

      1/2 the speed of your smallest air bubbles, 30 feet per sec.

    • D. 

      1/2 the speed of your largest air bubbles, 30 feet per sec.

  • 5. 
    The air in your scuba tank is comprised of ___ oxygen and __ nitrogen.
    • A. 

      21%, 79%

    • B. 

      40%, 60%

    • C. 

      79%, 21%

    • D. 

      Pure, no

  • 6. 
    What is likely to be affected by the type and amount of suspended particles in the water?
    • A. 

      The visibility.

    • B. 

      The dive computer.

    • C. 

      Your buoyancy.

    • D. 

      The water temperature.

  • 7. 
    A thermocline ___.
    • A. 

      Is an abrupt change in water pressure.

    • B. 

      Is a gradual change of water temperature.

    • C. 

      Is an abrupt change of water temperature.

    • D. 

      Is an abrupt change of the underwater visibility.

  • 8. 
    What is the best course of action when you are out of air and your diving partner (buddy) is close-by?
    • A. 

      Signal to your diving partner that you will ascend, fill your tank and then come down again.

    • B. 

      Jerk your partners regulator so that he/she will share his/hers.

    • C. 

      Switch to your dive partner's alternate air source.

    • D. 

      Signal your partner to ascend to the surface.

  • 9. 
    How often is a "visual inspection" performed?
    • A. 

      Every 12 months

    • B. 

      Every 5 years

    • C. 

      Every 10 years

    • D. 

      Before every dive

  • 10. 
    How much faster than air does water conduct heat?
    • A. 

      25 times faster

    • B. 

      12 times faster

    • C. 

      5 times faster

    • D. 

      4 times faster

  • 11. 
    A mask squeeze is caused when the out-side pressure is lower than the pressure in the air space in the mask.
    • A. 

      True

    • B. 

      False

  • 12. 
    First aid treatment for a person suffering from decompression illness always includes 100% inhaled oxygen.
    • A. 

      True

    • B. 

      False

  • 13. 
    Which two materials are scuba tanks made from?
    • A. 

      Steel or lead

    • B. 

      Aluminum or steel

    • C. 

      Aluminum or hard plastic

    • D. 

      Steel or neoprene

  • 14. 
    How often is it recommended to have your scuba tank hydrostatically tested?
    • A. 

      Every year

    • B. 

      It is not necessary to test your tank unless you suspect that something is wrong with it.

    • C. 

      Every 5 years

    • D. 

      Every 10 years

  • 15. 
    Due to light refraction, objects underwater appear:
    • A. 

      Smaller and further away

    • B. 

      Smaller and closer

    • C. 

      Larger and closer

    • D. 

      Larger and further away

  • 16. 
    What does RNT stand for on a dive table?
    • A. 

      Reversed Nautical Table

    • B. 

      Reverse Natuical Tides

    • C. 

      Residual Nitrogen Time

    • D. 

      Responsible Navy Trainer

  • 17. 
    A diver is more buoyant in the sea than in a lake.
    • A. 

      True

    • B. 

      False

  • 18. 
    The large majority of surface waves are caused by:
    • A. 

      Wind

    • B. 

      Underwater earthquakes

    • C. 

      Boats and ships

    • D. 

      Underwater volcanoes

  • 19. 
    Sound travels __ times faster in water than in air due to density.
    • A. 

      3

    • B. 

      4

    • C. 

      5

    • D. 

      25

  • 20. 
    What percent of air is oxygen?
    • A. 

      21%

    • B. 

      79%

    • C. 

      47%

    • D. 

      56%

  • 21. 
    What is the main purpose of the "divers down" flag?
    • A. 

      To indicate a place or area offering diving related services.

    • B. 

      To notify people on a beach that there are dangerous currents in the water close to the shore.

    • C. 

      To notify any boats in the area that there are divers in the water.

    • D. 

      To notify divers that there might be sharks in the area.

  • 22. 
    Divers must stay within ___ feet of the diver down flag at all times.
    • A. 

      50

    • B. 

      100

    • C. 

      200

    • D. 

      300

  • 23. 
    Boaters distance from the divers down flag is dependent on State and local laws, but generally it is:  
    • A. 

      50 feet

    • B. 

      100 feet

    • C. 

      200 feet

    • D. 

      300 feet

  • 24. 
    What action is NOT likely to cause decompression sickness?
    • A. 

      Descending too quickly.

    • B. 

      Skipping the decompression stops after a long, deep dive.

    • C. 

      Flying on the same day as diving.

    • D. 

      Ascending too quickly.

  • 25. 
    What are the two basic parts of a regulator called?
    • A. 

      The first and second stage

    • B. 

      The hose and mouthpiece

    • C. 

      The first stage and the dust cap

    • D. 

      The valve and mouthpiece

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