Naui Scuba: Diving Science Exam with
Complete Solutions
True or False: Air at sea level is denser than the air at higher levels - ANS-True
True or False: The density of water at any depth is the same as the water at the surface
- ANS-True
Objects appear ____ and ____ in water than they do in air - ANS-1/3 closer; 1/4 larger
Sound waves travel ____ in water than they do in air - ANS-four times faster
The resistance in water is called ____ - ANS-Drag
Archimedes Principle - ANS-an object in a fluid is lifted up by a force equal to the weight
of the fluid it displaces
The absolute pressure is ___ ata at 20.7 meters (68 feet) in fresh water - ANS-3 atm
Boyle's Law - ANS-the inverse relationship between pressure and volume
The greatest change in pressure is between... - ANS-the surface and 10 meters
As air compresses, it becomes... - ANS-denser
The rate at which you consume air is directly proportional to - ANS-the depth of your
dive
Factors that affect your air consumption - ANS-your activity level during the dive, mental
state, body size, warmth of diving suit, level of physical fitness
Divers monitor their air supply under water by checking their - ANS-submersible
pressure gauge
Air spaces in your body affected by diving - ANS-lungs, sinuses, middle ears, stomach,
intestines, teeth
When the pressure outside an air space is greater than the pressure inside the air
space - ANS-squeeze
squeezes can cause pressure injuries called - ANS-barotrauma
Complete Solutions
True or False: Air at sea level is denser than the air at higher levels - ANS-True
True or False: The density of water at any depth is the same as the water at the surface
- ANS-True
Objects appear ____ and ____ in water than they do in air - ANS-1/3 closer; 1/4 larger
Sound waves travel ____ in water than they do in air - ANS-four times faster
The resistance in water is called ____ - ANS-Drag
Archimedes Principle - ANS-an object in a fluid is lifted up by a force equal to the weight
of the fluid it displaces
The absolute pressure is ___ ata at 20.7 meters (68 feet) in fresh water - ANS-3 atm
Boyle's Law - ANS-the inverse relationship between pressure and volume
The greatest change in pressure is between... - ANS-the surface and 10 meters
As air compresses, it becomes... - ANS-denser
The rate at which you consume air is directly proportional to - ANS-the depth of your
dive
Factors that affect your air consumption - ANS-your activity level during the dive, mental
state, body size, warmth of diving suit, level of physical fitness
Divers monitor their air supply under water by checking their - ANS-submersible
pressure gauge
Air spaces in your body affected by diving - ANS-lungs, sinuses, middle ears, stomach,
intestines, teeth
When the pressure outside an air space is greater than the pressure inside the air
space - ANS-squeeze
squeezes can cause pressure injuries called - ANS-barotrauma
