A diver on the surface waving his/her hand overhead and thrashing violently indicates:
- distress
- danger
- Out of air
- Euphoria - ANSWER distress
Atmospheric pressure at sea level is:
- 2.0bar/ 29.4 pounds per square inch/ 2.0 atmospheres absolute
- 1.0 bar/ 14.7 pounds per square inch/...
- breathe normally at all times during ascent and never hold his/her breath - ANSWER breathe normally
at all times during ascent and never hold his/her breath
A diver's body heat is lost through conduction (primarily) at a rate of approximately _________ times
more rapid than in air.
- 10
- 25
, - 30
- 15 - ANSWER 25
Sea water weighs _____ kg per liter or _____ pounds per cubic foot.
- 6.67/ 14.7
- 0.202/ 0.445
- 1.0/ 62.4
- 1.025/ 64.0 - ANSWER 1.025/ 64.0
A diver's inability to equalize his/her ears during ascent could cause:
- sinusitis
- a block or reverse block
- internal ear squeeze
- external ear squeeze - ANSWER a block or reverse block
Breathing dry air, a scuba diver tends to become dehydrated while diving due to:
- excessive perspiration
- moisturizing dry inhaled air
- saltwater absorbing moisture from the skin
- the extreme amount of energy expanded during dive - ANSWER moisturizing dry inhaled air
It is advisable that a sport/ recreational diver:
- make few decompression dives
- make decompression dives if he/ she feels psychologically prepared
- avoid the decompression dives
- execute decompression dives when a hyperbaric chamber is nearby - ANSWER
A sealed balloon filled withe air that has a volume of 6 cubic inches at 99 feet will have a volume of
_____ cubic inches at 33 feet.
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