The small bubbles in your wet suit compress as you get deeper. A Compress (feel thinner) from water pressure, and I will lose buoyancy and warmth.
16) If I work too hard and find it difficult to breathe underwater, I shouldī stop all activity and rest, holding onto something for support if possible.Ĭ swim immediately to my buddy and signal for help.ĭ do a controlled emergency swimming ascent (CESA - swimming up to the surface saying the ah-h-h-h sound). Continue only after you've regained a normal, slow breathing rate. Immediately stop and rest while holding onto something for support to restore normal breathing. If you find it difficult to breathe you're overexerted. 15) Unless there are laws that say differently, I should stay within _ of my dive flag.ĭ 5 meters B Stop all activity and rest, holding onto something for support if possible. If there are no specific local laws regarding dive flags, stay within 15 meters of the flag. This is why you cannot easily tell where it comes from. 14) _ travels faster in water than it does in air. See Being a Diver II - Hearing Underwater. This makes it difficult to determine where the sound is coming from because it seems to come from all around or directly overhead. Sound travels about four times faster in water than in air. 13) When I look at things underwater they often seem _ than they look on the surface. See Being a Diver II - Seeing and Hearing as a Diver. This makes objects appear larger and closer than they really are. Instrument console/gauges/computer A Larger and/or nearerĪs light travels through water and into your mask, it bends, or refracts. Please choose the correct number for the choices below. Each regulator part has a number next to it. The first stage is the "hub" of your regulator and supplies air to the components - the second stage, alternate air source, low pressure inflator hose and SPG/dive computer. Your regulator consists of five components. 11) Which of the following is part of proper care for my scuba cylinder?ĭ Have it pressure tested every month. Store it standing in a safe place and keep it away from high heat.
Also, have it pressure tested at required intervals, usually two to five years. You should keep some air in the cylinder to prevent moisture from entering and causing corrosion.
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