Something underwater that does not float and does not sink is ________. - ANSWER
Neutrally Bouyant
If an object is neutrally buoyant in salt water. What will probably happen to the object if you
put it into fresh water? - ANSWER The object will sink.
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. - ANSWER Four
Imagine you hold a glass full of air upside down and you take it to the bottom of the swim-
ming pool without tipping it. The density (thickness) of the air inside the glass will be ____ at
the surface. - ANSWER Greater than
What should you do if you cannot equalize (clear) your ears or sinuses while you are de-
scending (going down)? - ANSWER Stop and ascend (go up) a few metres/feet and try to
equalize (clear) again.
What should you do to prevent mask squeeze (a sucking or pulling feeling on your face and
eyes)? - ANSWER Blow into your mask through your nose.
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: - ANSWER Expand to twice the size as it was at 10
metres/33 feet.
What can happen to you if you hold your breath while ascending (going up) on a scuba dive?
- ANSWER Your lungs can over expand which could cause serious injury.
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Neutrally Bouyant
If an object is neutrally buoyant in salt water. What will probably happen to the object if you
put it into fresh water? - ANSWER The object will sink.
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. - ANSWER Four
Imagine you hold a glass full of air upside down and you take it to the bottom of the swim-
ming pool without tipping it. The density (thickness) of the air inside the glass will be ____ at
the surface. - ANSWER Greater than
What should you do if you cannot equalize (clear) your ears or sinuses while you are de-
scending (going down)? - ANSWER Stop and ascend (go up) a few metres/feet and try to
equalize (clear) again.
What should you do to prevent mask squeeze (a sucking or pulling feeling on your face and
eyes)? - ANSWER Blow into your mask through your nose.
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: - ANSWER Expand to twice the size as it was at 10
metres/33 feet.
What can happen to you if you hold your breath while ascending (going up) on a scuba dive?
- ANSWER Your lungs can over expand which could cause serious injury.
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