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20 Cards in this Set
- Front
- Back
Ear equalization or "clearing" should be _____ ______ upon decending and continued as you dive deeper, and should never be done _____.
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started immediately, forcefully
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If your sinuses are blocked, it is best not to _____ until the problem is _____, and they are open again.
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dive, resolved
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A common reaction to anxiety or fear is a _____, _____ breathing pattern.
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rapid, shallow
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unless a diver _____. _____, and gets _____ under control, stress and even panick may occur.
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stops, thinks, breathing
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To prevent carbon dioxide excess, avoid _____ and dive with high quality, well maintained _____.
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overexhertion, equipment
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Always breathe _____, never hold your breath; even if the _____ is out of your mouth while underwater, develop a habit of _____ a steady stream of bubbles
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normally, regulator, exhaling
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Proper weighting allows a diver to get under water and begin a descent. With proper weighting achieved, adjustment of _____ under water is achieved by _____ air to or _____ air from the BC.
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bouyancy, adding, removing
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Once neutrally bouyant at any depth, if you move into _____ water, the air in your BC will expand, and you will need to _____ air from the BC until you become suspended
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shallower, release
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Hearing is affected (underwater) because soundwaves travel _____ times faster in water than in air.
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4
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A sound all divers need to know is the clanking of a diver's tool or other device against a _____ _____. This is a signal to get another diver's attention.
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scuba cylinder
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The body loses heat faster in water than it does in air - _____ times faster.
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25
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When body temperature is allowed to drop to 95 F (35C)m _____ sets in.
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hypothermia
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Failure to keep an open airway to the lungs upon ascent can result in one of four _____ injuries
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overexpansion
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During the process of releasing nitrogen from the tissues, it is important that the diver come up _____ enough to allow the _____ to stay in solution in the tissues and blood while it is being released.
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slowly, nitrogen
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The proper rate of ascent is _____ feet per minute.
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30
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Write all contact information in your _____ _____ _____.
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SSI Total Divelog
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While it is important to know emergency precautions, _____ _____ divers who use good _____ should never need to use them, or make it necessary for others to use them.
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properly trained, judgement
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After your ascent, when you reach the surface, inflate your _____, do a weight system check, keep your _____ in place, and either keep the _____ in place, or switch to snorkel breathing.
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BC, mask, regulator
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An emergency _____ ascent is essentially the same as a normal ascent except that you are prepared to ditch your weight system for immediate positive bouyancy if needed.
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swimming
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If you are confused or panicked, and their is doubt about which ascent to use, ditch the weights and do the _____ ascent.
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bouyant
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