Latest Update
What should you do to prevent mask squeeze (a sucking or pulling feeling on your face and
eyes)? Blow into your mask through your nose.
Imagine you put air into a balloon underwater at 10 meters/33 feet and then you take it to the
surface. The balloon will: Expand (become larger) to twice the size.
What can happen to you if you hold your breath while ascending (going up) on a scuba dive?
Your lungs can over-expand, which could cause serious injury.
What is the most important feature of a scuba regulator? How easy it is to breathe from it.
Diving is easier, safer and more fun when you Diving with a buddy.
Something underwater that does not float and does not sink is: Neutrally bouyant.
If an object is neutrally bouyant in salt water. What will probably happen to the object if you
put it into fresh water The object will sink.
Imagine a diver is 30 meters/99 feet underwater. The water pressure at this depth would be .....
times more than the pressure at the surface. Four
Imagine you hold a glass full of air upside down and you take it to the bottom of the swimming
pool without tipping it. The density (thickness) of the air inside the glass will be ..... at the
surface. Greater than
What should you do if you cannot equalize (clear) your ears or sinuses while you are descending
(go down)? Stop and ascend (go up) a few meters/feet and try to equalize (clear) again.