1. Something underwater that does not float and does not sink is ________.:
Neutrally Bouyant
2. If an object is neutrally buoyant in salt water. What will probably happen to
the object if you put it into fresh water?: The object will sink.
3. Imagine a diver is 33 metres/99 feet underwater. The water pressure at this
depth would be ______times more than the pressure at the surface.: Four
4. 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
5. What should you do if you cannot equalize (clear) your ears or sinuses while
you are descending (going down)?: Stop and ascend (go up) a few metres/feet and try to
equalize (clear) again.
6. 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.
7. Imagine you put air into a balloon underwater at 10 metres/33 feet and then
you take it to the surface. The air in the balloon will:: Expand to twice the size as it
was at 10 metres/33 feet.
8. 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.
9. What is the most important feature of a scuba regulator?: How easy it is to
breathe from it.
10. Why is it important to practice the buddy system whenever you go diving?:
Diving is easier, safer and more fun with a buddy.
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