(FROM CLASS) !!
Something that doesn't float and doesn't sink is
a. positively buoyant
b. negatively buoyant
c. neutrally buoyant
d. partially buoyant - ANSWER...-c. neutrally buoyant
If an object is neutrally buoyant in saltwater, what will happen to the object if I put it into
freshwater?
a. the object will sink
b. the object will float
c. the object will not sink or float
d. i can't tell from the question - ANSWER...-a. the object will sink
A diver is 30 meters/99 feet underwater. The water pressure at this depth would be
_________ times more than the pressure at the surface.
a. two
b. three
c. four
d. five - ANSWER...-c. four
If I hold a glass full of air upside down and 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.
a. less than
b. greater than
c. the same as
d. less than or greater than - ANSWER...-b. greater than
What should I do if I can't equalize (clear) my ears or sinuses while I am descending
(going down)?
a. continue descending, but go slower
b. stop descending, and try again to equalize by blowing harder
c. stop and ascend a meter/few feet and try to equalize again