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Equipment
Dive Maladies
Computer
Dive Physics
Other
100
Masks have a nose pocket or fingerless to
Allow equalization of your ears
100
If your regulator comes out of your mouth on a dive, you should
Exhale continuously and put it back in
100
The term depth of your dive refers to
the deepest point of the dive
100
Sound travels how many time faster in water than air
4 times
100
The best way to enter the water is
the easiest and safest Method
200
To protect your foot while using open-heeled fins, you should use
Wet suit boots
200
A diving accident on the surface can be avoided if you know how to
inflate your BC and ditch your weights
200
What is the recommended time divers should wait after exiting the water before flying
24 hours
200
Proper buoyancy for scuba divers while under water is
neutral
200
When breathing from the scuba unit, you should
breathe continuously in a normal manner
300
Fins are used to maximize propulsion and
minimize effort
300
The best on-site first aid for decompression sickness is
oxygen
300
What is the recommended ascent rate for recreational divers
30 feet per minute or follow your dive computer
300
Exposure suits are often required when diving because water absorbs body heat how many times faster
25 times faster
300
Scuba cylinders that fail hydrostatic tests must be
Condemned
400
Scuba cylinders should be visually inspected how often
at least once a year
400
Holding your breath on ascent can cause
over expansion injury
400
Bottom time is defined as
the total time you spend on the bottom
400
The suggested maximum recreational diving limit is
100 feet
400
Which method of regulator retrieval is generally taught
lean to the right and sweep with your right arm to retrieve the second-stage hose
500
A submersible pressure gauge is used to
monitor your air supply
500
Air embolisms and other over expansion injuries an be eliminated on ascent by
breathing continuously at all times under water
500
No-decompression limits are
the maximum allowed time at depth without having to perform a mandatory decompression stop during the ascent
500
How does altitude affect your nitrogen absorption
Your nitrogen absorption rate is different than at sea level because of the lower atmospheric pressure
500
If you run out of air and your buddy is near, you should
Signal your buddy and share air to the surface