Term
| The three major body air spaces affected are: |
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Definition
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Term
| How often should you Equalize your ears ? |
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Definition
| You Equalize as often as you should , every meter is the guilde line . |
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Term
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Definition
| A reverse block ( also called a reverse squeeze) results when expanding air becomes trapped in a body air space. |
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Term
| The breathing rules to follow as scuba diver are: |
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Definition
* Breathe continuously and never , ever hold your breath.
* Breathe slowly and deeply
* Do not allow yourself to get winded or out of breath.
* If faced with a problem , stop , then reduce anxiety by maintaining or restoring slow , deep breathing. |
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Term
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Definition
| Buoyancy is an upward force acting on an object in water , which is why you feel lighter |
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Term
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Definition
- Object floats on water is know as postive buoyancy
- Object weight more than water and sinks is know as negative buoyancy
- Object weight the same it neither sinks or floats this is know as neutral buoyancy.
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Term
| What two device control your buoyancy ? |
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Definition
- Weight system
- BCD ( Buoyancy Control Device)
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Term
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Definition
| Your eyes must be in air to focus properly , dive mask creats an air space that you have to equalize. |
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Term
| what to consider when buying a snorkel : |
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Definition
- Flexible lower portion
- self-drain valve
- splash guard
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Term
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Definition
also know as "Scuba Kit" forms the core of your underwater life support is actually for equipment
- BCD( Buoyancy Control Device )
- Regulator
- Cylinder
- Weight System
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Term
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Definition
Arm-Sweep is when you recover your regulator :
Arm-sweep method - upright and lower your right shoulder
- reach method it helps to lift the cylinder with your left hand
- blow slow steady stream of bubbles when the regulartor isn't in your month. |
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Term
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Definition
| Streamlining { stream-line-ing} reduces drag which in turn reduces the energy you use underwater. |
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Term
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Definition
Trim is your balance in the water
with ideal trim , you float with your feet and head relatively level , which is part of being streamlined.
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Term
| Different types of suits: |
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Definition
- Dry suits use these for the coolest water / longest dives.
- Wet suits : allow diving in a wide temperature range , can choose different thicknesses and select styles that voer more or less of your body.
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Term
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Definition
| when humans breath , yourbody absorbs the oxygen it needs and releaess waste carbon dioxide, but this only occurs in the lungs. but not all bereathing passages take part in gas exhange , we call this air passages "dead air space" |
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Term
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Definition
Begin With Review And Friend
- B = BCD check adjustment, cyclinder is firmly in band , make sure its partially inflated , confirm audible surface signaling devices ,
- W = Weight , check you have right amount of weight for trim and quick release is clear
- R = Release
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Term
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Definition
- Confirm that your buddies are ready
- Orient yourself
- Switch from yhour snorkel to your regulator
- Check and if necessary activate your dirve computer
- Signal descend
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