2025/2026
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, 1 bar is what depth? 0m/0ft
2 bar is what depth? 33ft/10m
passive and active
2 Types of aquatic interactions are?
3 bar is what depth? 66ft/20m
3 types of valves are? K; J; DIN
4 bar is what depth? 99ft/30m
75% heat loss in body occurs in? The head
Air is made up of? Nitrogen and Oxygen
diver carelessness
Aquatic life injuries are a result of?
Red to blue
As you descend, colors fade from...
faster
As you go deeper you use your air
___?
remaining neutrally buoyant, swimming with your feet up off the bottom
Avoid bottom contact by:
Before diving, don't drink excessively the night before
Best tidal level for diving is... high tide
True
T/F? Carry a slate with you in order
to communicate/carry info.
Collecting bags are useful for collecting under water garbage; carrying several objects at once
Decompression illness implies both decompression sickness and lung over expansion injuries
Do tides generate rip currents? No
Only if the pressure is different inside and outside of the air spaces.
Do you always feel the pressure in
body air spaces?
water movement, weather, suspended particles, bottom composition
Factors that affect visibility are?
Hold enough air; large deflation hose; low pressure inflation system;
Features of the BCD are relief valve; comfortable fit
Features of a snorkel are large bore; not too long; smooth round bends
low profile; nose or finger pockets; wide FOV; adjustable strap;
Features you look for in a mask comfortable skirt; tempered-glass lens plate
First rule of diving Always breathe continuously