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Q: Depth 20m/66ft what is the pressure, volume and densityÂÂ
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Answer:ÂÂ
bar/ata, 1/3 volume, 3x densityÂÂ
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Q: Depth 30m/99ft what is the pressure, volume and densityÂÂ
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Answer:ÂÂ
bar/ata, 1/4 volume, 4x densityÂÂ
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Q: As I descend, I need to equalize air spaces. Which of the following are accepted ways of equalizing my ears?ÂÂ
Block my nose and attempt to gently blow through it.ÂÂ
Swallow and wiggle the jaw from side to sideÂÂ
Block my nose and blow forcefully for an extended periodÂÂ
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Answer:ÂÂ
Block my nose and attempt to gently blow through it + swallow and wiggle the jaw from side to sideÂÂ
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Q: I should equalizeÂÂ
early and often, before I feel discomfortÂÂ
when I begin to feel discomfortÂÂ
only if I experience pain
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