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Terms in this set (23)
10m/33ft = how many ata?
gas density ____________ as you descend?
gas volume ____________ as you descend?
if you descend 10m, with 2 bars of pressure, air volume _________ and air density _____________ ?
air volume ________ as you descend?
3 major body air spaces
ears, sinuses, mask
what is equalization?
adding air to the three air spaces to prevent squeezing
how do you equalize your ears and sinuses?
pinch your nose and gently blow to send air from your throat to those places
how do you equalize your mask?
blow air from nose into mask
if you can't equalize, what should you do?
stop your descent immediately and ascend until discomfort passes
what is the most important rule in scuba diving?
breathe deeply and constantly
the deeper you are the _______________ you are at using your air?
your air supply lasts _________ as long at 10m than at surface?
an _________________ force acts on objects in water?
what are the three types of buoyancy?
positive, negative, neutral
what is displaced water?
water that is pushed out of the way by an object submerged in it
if an object weighs less than the amount of displaced water, it floats, causing_____________?
if an object weighs more than the amount of displaced water, it sinks, causing______________?
if an object weighs the same as the amount of displaced water, it neither floats nor sinks, causing______________?
what are the two pieces of equipment that help with buoyancy?
weight system, buoyancy control device
your BCD affects your ______________, and therefore how much water is displaced.
wetsuits have gas spaces, which _________________ as you descend and increase in pressure?
as you descend, your volume increases, causing negative buoyancy as the amount of displaced water decreases, and you should reduce this by _________________ to your BCD?
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