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81 Cards in this Set
- Front
- Back
The most important consideration when selecting dive equipment is |
Fit |
|
The best type of fin to use if someone has knee or hip problems is |
Split fins |
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What do you not let inside of your regulator when rinsing it? |
Water |
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The most important thing about your weight system is that |
Weights can be ditched easily in an emergency |
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Tanks require a hydrostatic test every ——- years and a VIP inspection every —- year |
5 , 1 |
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The tank should never be stored empty because |
Bacteria can get inside |
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Provides emergency floatation, buoyancy compensation, and a tank harness |
A buoyancy compensator |
|
We should wear our snorkel ... |
All the time (snorkeling and scuba diving) |
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We wear wetsuits to provide |
Warmth |
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In the water, a knife is used as a |
Tool |
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Scuba regulators are —- —— regulators |
Demand flow |
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Normally in a 2 stage, single hose regulator, the pressure reduction in the first stage is cylinder pressure to |
150 psi plus ambient pressure |
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It is recommended that at the end of the dive, the air reserved to the surface is —- psi |
500 psi |
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Empty scuba tanks should be stored with —- to —— psi |
200 to 400 psi |
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A properly weighted diver will float .. |
Float at eye level with a breath of air in your lungs |
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Steps to remove a regulator from the tank (4) |
1. Turn off the air 2. Breath or purge remaining air from high pressure system 3. Losses yoke screw 4. Remove regulator
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A dive flag is |
Red with a diagonal white stripe |
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On a night dive, you should have |
One light per diver plus backup light |
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When diving in a location with fishing boat traffic, you should have (2) |
1. Knife 2. Dive flag |
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The MOST important thing to remember about your weights is that they should have a .. |
Quick release mechanism |
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The fish that lays in the sand and inflicts a wound with a barb is a |
Sting ray |
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Stings caused by nematocysts are best treated by.. |
Neutralizing with baking soda or an ammonia solution |
|
The moray eel is usually harmless if you (3) |
1. Stay away from its home 2. Keep your hands out of rocky holes 3. Be careful while looking for lobster |
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There is a greater chance that a shark will attack if you are swimming |
At the surface of the water |
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A diver unfamiliar with coral should |
Never touch it |
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The Portuguese Man-of-War is a |
Hydroid |
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To escape from a rip current, swim .. |
PERPENDICULAR to the current |
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The zone in which there is an abrupt change of water temperature is called a |
Thermocline |
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Most surface waves are caused by |
Winds |
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A longshore current is caused by |
Waves approaching the shore at an angle |
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The water movement during a surge is |
Back and forth |
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Currents encountered offshore when diving are |
Primarily predictable, major currents |
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When diving near an inlet or any place with a tidal change, you should consult the local tide tables and plan to dive .. |
Just prior to high tide and plan to get out just before the tide begins to change |
|
NOT necessary when towing a victim |
Your mask being on |
|
Best way to stop bleeding is |
Applying direct pressure |
|
Symptoms of shock include (3) |
1. Dilated pupils 2. Pale/clammy skin 3. Unconsciousness |
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If air exchange is not apparent when first attempt of mouth to mouth resuscitation, you should immediately check (2) |
1. Head position 2. Jaw position |
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The two objectives for First Aid treatment are |
1. Immediate help 2. Temporary help |
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Symptoms of heat exhaustion (2) |
Red and sweaty |
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Symptoms of heat stoke are (2) |
Cool and clammy hands |
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INNAPPROPRIATE WAY to treat air embolism |
Elevate head and apply cold compress |
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HYPOthermia is best treated by a |
Very warm bath |
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Upon retrieving an unconscious diver who has stopped breathing, your first consideration should be to start.. |
Artificial respiration |
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When approaching a conscious diver who is calling for help on the surface, the first course of action should be to |
Determine if the victim is rational or not, before getting close |
|
The most common cause of a lung over expansion injury is |
Rapid ascent while holding your breath |
|
Vertigo can be caused by a |
Ruptured eardrum |
|
A treatment designed to reduce bubble size and restore circulation in an embolized diver |
HYPERbaric Treatment |
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When the nitrogen in the air we breath becomes Botox in excess of 130 ft |
Nitrogen Narcosis |
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The best technique or maintaining normal lung volume |
Breathing normally while ascending |
|
The Eustachain tube is located in the |
Back of the throat to the MIDDLE EAR for easy clearing of the ear |
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Divers should equalize |
Early and often |
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For maximum efficiency, your breathing should be |
Slightly SLOWER and deeper than normal |
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The most serious result of lung overexpansion is an (2) |
1. Air Embolism 2. Arterial gas embolism |
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Nitrogen is a metabolically inert gas meaning the body |
Does not use the nitrogen |
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The volume of a balloon at the surface is 20 cubic feet, the volume of this balloon at 66 feet is — cubic feet |
6.66 cubic feet |
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Ambient pressure at 99 feet is — atm |
4 atm |
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Because the absorption of light rays as they pass through the water, we first notice the disappearance of |
Red |
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Water carries away body heat approximately — times faster than air |
25x faster |
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Air is approximately —- oxygen and —- nitrogen |
21% and 79% |
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Salt water is —— dense and therefore provides —- buoyancy than fresh water |
More, more |
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Best explains diving medical problems such as ear sinus and squeeze |
Boyle’s Law |
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Objects appear approx. 1/3 closer underwater due to |
Refraction |
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Sea water weighs |
64 pounds per cubic foot |
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A diver makes a dive 81 feet for 18 minutes. What’s his repetitive group designation? |
F |
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Does 911 work everywhere? |
No |
|
Interruption of flow to the BRAIN |
Stroke |
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To little and too much oxygen is |
Bad for us |
|
Manages nitrogen we take on in our bodies |
Dive Tables |
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Can’t breath, taking on water |
Drowning |
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Basically dead, can happen up to 24 hours later |
Near drowning |
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How do you treat someone who had a stoke? |
Elevate their legs |
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How do you treat someone who has an air embolism |
Keep their heads up |
|
Hyper |
Too much |
|
Hypo |
Too little |
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Types of HYPERthermia (2) |
1. Heat Exhaustion 2. Heat stroke |
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Between heat stroke and heat exhaustion, who do you not give fluids too and who do you give fluids too? |
Heat Stroke - do no give fluids Heat Exhaustion - give fluids |
|
To prevent / treat sea sickness (4) |
1. Don’t eat greasy food beforehand 2. Take drugs 3. Get yourself centered on the boat 4. Look at the horizon |
|
Sharks and other animals attack because it’s a —— move |
Defense |
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For sea urchins, if the spine is embedded and in their... |
Keep it in |
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Medical treatment for air embolism is |
Decompression Chamber |
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Ruptured tempatic membrane will give you |
Vertigo |