QUESTIONS AND SOLUTIONS GUARANTEE A+
✔✔What 2 components make up a scuba cylinder? - ✔✔The aluminum/steel container
and the valve to control air flow
✔✔What is a burst disk? - ✔✔A safety device that relieves overpressure by rupturing
and releasing air
✔✔What is the most important feature in my weight system? - ✔✔A quick release that
will enable you to float with an uninflated BC
✔✔Why use more than 1 weight system? - ✔✔It will help distribute weight
✔✔trim - ✔✔The orientation and balance of a swimmer in the water - the ideal is
horizontal
✔✔danger/hazard - ✔✔
✔✔okay - ✔✔
✔✔go up/end dive - ✔✔
✔✔something's wrong - ✔✔
✔✔down/descend - ✔✔
✔✔low on air - ✔✔
✔✔okay - ✔✔
✔✔distress/in trouble - ✔✔
✔✔How does being underwater affect the apparent size or distance of things? -
✔✔Refraction occurs, where light changes direction, and things are magnified by 1/3
✔✔How does water affect light intensity and color? - ✔✔It reflects, scatters, and
absorbs light in the roygbiv order
As you go deeper, it gets darker
✔✔How does hearing differ underwater? - ✔✔It travels faster and longer
✔✔How does water's density affect moving in water? - ✔✔It takes more energy the
faster you try to swim
, ✔✔What is "airway control"? - ✔✔The skill of breathing past remaining water without
drawing any into your throat after clearing your regulator/snorkel
✔✔What are 2 techniques for airway control? - ✔✔Inhaling slowly, looking down, and
touching your tongue to the roof of your mouth as you inhale
✔✔What are 8 symptoms of overexertion while diving? - ✔✔Fatigue, labored breathing,
a feeling of suffocation, weakness, anxiety, headaches, muscle cramping, and a
tendency to panic
✔✔What should I do if I think I'm becoming overexerted at the surface and underwater?
- ✔✔Stop all activity, signal your buddy, and rest
✔✔What points should a dive plan normally include? - ✔✔Agree on best entry/exit
techniques, decide what course you'll follow, agree on maximum time and depth, review
underwater signs, determine when you will head back, agree on how you'll stay together
during the dive, establish what you'll do if you become separated, discuss emergency
procedures
✔✔How do we conduct the predive safety check? - ✔✔Using Begin With Review And
Friend (BWRAF)
✔✔BWRAF - ✔✔BCD, weight, releases, air, final check
✔✔What do I do if I get separated from my buddy on a dive? - ✔✔Look for each other
for no more than 1 minute, and then ascend to the surface if you can't find them
✔✔How do my buddy and I manage our air supply together while diving? - ✔✔Plan your
dive around who breathes air the fastest.
Subtract your reserve/ascent supply from your starting pressure to find out how much
pressure you have for the main part of the dive
To be safe, plan to use half your air coming down, and half coming back
✔✔What are the 5 steps for a proper descent with scuba? - ✔✔1. Confirm that your
buddy is ready
2. Orient yourself to something
3. Switch from your snorkel to your regulator
4. Check your dive computer/timer
5. Signal "descend" and slowly deflate your BCD
✔✔What are the 5 steps for a proper ascent with scuba? - ✔✔1. Signal "up" and
confirm that your buddy is ready
2. Check your dive computer/timer to be sure you're within dive limits
3. Look up and hold your BCD deflator hose