Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
True or false an object is neutrally buoyant when it displaces less water than the objects weight? |
False: neutrally buoyant if the water the object displaces is an equal amount of water to weight of the object
|
|
|
Explain why buyoyancy control, both on the surface and underwater, is one of the most important skills you can master.
On the surface it is important because it allows you to conserve_____________ |
Energy
|
|
|
Explain why buoyancy control, on the surface and underwater, is one of the most important skills you can master.
Underwater it is important it allows you to ___________ |
Stay off the bottom and avoid damaging aquatic life
|
|
|
Fill in the blanks with the appropriate words: fresh water or salt water.
"The same object would be more buoyant in__________ than it would be in_________." |
Salt water, Fresh water
|
|
|
True or False Because water is denser than air, the pressure change for a given distance ascent or descent is significantly greater in water than in air
|
True
|
|
|
Regarding the chart for a sealed fleible bag, full of air at the surface:
Whats the pressure at 10m/33ft? |
2bar/ata
|
|
|
Regarding the chart for a sealed fleible bag, full of air at the surface:
Whats the air density at 10m/33ft? |
x2
|
|
|
Regarding the chart for a sealed fleible bag, full of air at the surface:
Whats the pressure at 30m/99ft? |
4bar/ata
|
|
|
Regarding the chart for a sealed fleible bag, full of air at the surface:
Whats the air density at 30m/99ft? |
x4
|
|
|
Regarding the chart for a sealed fleible bag, full of air at the surface:
Whats the air volume at 40m/132ft? |
1/5
|
|
|
Whats the best definition for a sqeeze?
|
A condition that causes pain and discomfort when the pressure inside an air space of your body is less than the pressure outside an air space
|
|
|
Indicate the statements that describe a technique used to equalize air spaces during descent.
-Block your nose and attempt to gently blow through your nose through it -Swallow and wiggle your jaw from side to side -Block your nose and attempt to gently blow through it while swallowing and wiggling your jaw from side to side |
All dashes are correct!
|
|
|
You should equalize your air spaces every ____, before you feel ______.
|
few metres/feet, discomfort
|
|
|
----------------
|
false
|
|
|
the most important rule in scuba diving is to breathe continuously and never _________________.
|
hold your breath
|
|
|
Reverse block is?
|
a condition that occurs when expanding air cannot escape from a body air space during ascent, causing pain and discomfort
|
|
|
If you feel discomfort due to air expansion you should?
|
Descend a little stop and allow the trapped air to work its way out
|
|
|
When scuba diving, your ______ must eb enclosed in your mask so that you can ______________ it.
|
nose, equalize
|
|
|
The best way to prevent water from entering you scuba tank is to?
|
be sure you never completely drain it of all air pressure
|
|
|
The most important feature for consideration when purchasing a regulator is:
|
Ease of breathing
|
