NAUI written test

Here's a sample NAUI written questionnaire to test your scuba diving knowledge:

1. SCUBA stands for "self contained underwater breathing apparatus" yes/no
2. Decompression Sickness...
   • may occur if a diver ascends too quickly from a dive
   • may occur if a diver does not perform decompression stops on a long dive
   • may lead to death
   • all the above
3. Nitrogen Narcosis...
   • is similar to alcohol intoxication
   • starts to occur at around 33 feet
   • is caused by a lack of nitrogen in a diver's blood stream
   • starts to occur after approximately 30 minutes of diving
4. Underwater pressure doubles every 10 meters while diving - yes/no
5. What percent of oxygen and nitrogen are in a standard scuba tank?
   • 68% oxygen, 31% nitrogen, 1% other
   • 21% oxygen, 78% nitrogen, 1% other
   • 50% oxygen, 49% nitrogen, 1% other
   • 38% oxygen, 61% nitrogen, 1% other
6. An object is less buoyant in ______ than it is in ______
   • fresh water, salt water
   • salt water, fresh water
7. Holding your breathe while scuba diving...
   • is often encouraged by dive masters
   • causes you to become less bouyant
   • allows you to stay under water longer
   • is extremely dangerous
8. The term used for this piece of equipment is
   • The Pressure Breather
   • The Air Source
   • The Breathing Apparatus
   • The Second Stage
9. Water absorbs heat faster than air
   • True
   • False
10. If a diver becomes unresponsive underwater, one should
    • supply the diver with an alternative air supply
    • remove the diver's weights
    • bring the diver immediately to the surface
    • remove the diver's tank
11. A Thermocline...
    • Is an underwater drinking device used to help stay hydrated
    • Is an abrupt change of water pressure
    • Is an abrupt change of water temperature
    • Is a gradual change of water temperature
12. As you descend, you consume air from your scuba tank
    • slower
    • faster
    • the same

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