PADI, Open Water Diver, Final Exam
Review
D go with the flow.
Salt water is heavier than fresh water as it has dissolved minerals in it. This manner it reasons
more upward pressure (buoyancy) on an object. An object this is neutrally buoyant in sparkling
water would float in salt water due to the fact there is more upward force.
See Being a Diver I - Buoyancy and Controlling Buoyancy. - ANS1) If an item is neutrally
buoyant (does now not sink or drift) in sparkling water, the equal item placed into salt water
would
A sink.
B both sink or float.
C do not anything.
D go with the flow.
B The balloon will get smaller and the air in the balloon could be greater dense (molecules pass
nearer collectively).
As water stress increases, the quantity of an air space will decrease. This causes the density of
the air inner to increase and air molecules are driven nearer collectively. The balloon could get
smaller and the air density interior might be extra.
See Being a Diver I - Water Pressure and Air Volume Effects. - ANS2) I blow up a balloon, tie it
off, and take it to the lowest of the swimming pool. What will occur to the balloon and the air
internal it?
A The balloon will get bigger and the air within the balloon may be much less dense (molecules
circulate similarly apart).
B The balloon will get smaller and the air inside the balloon might be extra dense (molecules
move closer collectively).
C The balloon gets larger and the air in the balloon might be extra dense.
D The balloon will get smaller and the air in the balloon could be much less dense.
A come to be half of the size it changed into at the surface.
At 10 meters, the strain is 2 bar. An air volume taken to this depth from the floor could decrease
and become 1/2 the size.
,See Being a Diver I - Water Pressure and Air Volume Effects. - ANS3) I turn a glass the other
way up, lure the air in it through putting it in water, and then I take the glass right down to 10
meters. The air area would
A end up half the size it changed into on the surface.
B not exchange in length.
C come to be 1/three the size it turned into at the surface.
D come to be 2/three the dimensions it become on the surface.
C A cold, hypersensitivity or some other scientific hassle.
A bloodless, or any congestion, can block air passages for your ears and sinuses, making
equalization difficult or impossible.
See Being a Diver I - The Effects of Increasing Pressure on Body Air Spaces. - ANS4) If I am
now not able to equalize (clear) my frame air spaces, it could be because I even have
A seasickness.
B coronary heart disorder and high blood strain.
C a chilly, hypersensitive reaction or some other medical problem.
D anxiety.
C I am feeling a squeeze and want to equalize.
Pain on your ears or sinuses means that they aren't equalized. Stop your descent and ascend
barely to alleviate stress in your ears. Then try to equalize once more. If you can't equalize, give
up the dive.
See Being a Diver I - The Effects of Increasing Pressure on Body Air Spaces. - ANS5) If my
ears or sinuses harm while I am descending (going down), it usually manner
A my air spaces are equalized.
B my masks strap is too tight.
C I am feeling a squeeze and need to equalize.
D my masks is simply too small.
B In the triangle location shaped by using my chin and the decrease corners of my rib cage.
Your trade air supply attaches with a brief launch inside the triangle location shaped by way of
your chin and the decrease corners of your rib cage. Avoid letting your change air source cling
unsecured from your package.
, See Equipment I - Regulators. - ANS6) The great vicinity for me to position an exchange air
supply is
A free by using my side so I can find it rapid.
B in the triangle vicinity formed by using my chin and the decrease corners of my rib cage.
C to the bottom of my cylinder.
D to the back of my BCD between my shoulder blades and waist.
D Holding my breath while scuba diving.
Blocking off your lungs with the aid of holding your breath and ascending could reason them to
overexpand and rupture, that is a extreme harm that might bring about paralysis and death.
Breathing continuously whilst scuba diving continues air passages open allowing increasing air
to get away.
See Being a Diver I - The Effects of Decreasing Pressure on Body Air Spaces. - ANS7) Lung
overexpansion accidents may be as a result of
A scuba diving without a friend.
B persevering with a dive while not properly weighted.
C not consuming sufficient water earlier than scuba diving.
D retaining my breath while scuba diving.
B 20 minutes
60/three=20
For every 10 meters we pass down, we've got one greater environment of stress. Also, recollect
to feature in the 1 environment of stress at the surface.
So, taking place to 20 meters, we can have 2 atm + 1 atm = 3 atm of pressure. - ANS8) If my
cylinder of air lasts 60 mins even as I am on the surface breathing normally, assuming all else is
the same, how long will it closing at 20 meters breathing commonly?
A 60 minutes
B 20 minutes
C 15 mins
D 12 mins
A Once a year.
Have your cylinder visually inspected yearly for internal corrosion or different
contamination/damage.
Review
D go with the flow.
Salt water is heavier than fresh water as it has dissolved minerals in it. This manner it reasons
more upward pressure (buoyancy) on an object. An object this is neutrally buoyant in sparkling
water would float in salt water due to the fact there is more upward force.
See Being a Diver I - Buoyancy and Controlling Buoyancy. - ANS1) If an item is neutrally
buoyant (does now not sink or drift) in sparkling water, the equal item placed into salt water
would
A sink.
B both sink or float.
C do not anything.
D go with the flow.
B The balloon will get smaller and the air in the balloon could be greater dense (molecules pass
nearer collectively).
As water stress increases, the quantity of an air space will decrease. This causes the density of
the air inner to increase and air molecules are driven nearer collectively. The balloon could get
smaller and the air density interior might be extra.
See Being a Diver I - Water Pressure and Air Volume Effects. - ANS2) I blow up a balloon, tie it
off, and take it to the lowest of the swimming pool. What will occur to the balloon and the air
internal it?
A The balloon will get bigger and the air within the balloon may be much less dense (molecules
circulate similarly apart).
B The balloon will get smaller and the air inside the balloon might be extra dense (molecules
move closer collectively).
C The balloon gets larger and the air in the balloon might be extra dense.
D The balloon will get smaller and the air in the balloon could be much less dense.
A come to be half of the size it changed into at the surface.
At 10 meters, the strain is 2 bar. An air volume taken to this depth from the floor could decrease
and become 1/2 the size.
,See Being a Diver I - Water Pressure and Air Volume Effects. - ANS3) I turn a glass the other
way up, lure the air in it through putting it in water, and then I take the glass right down to 10
meters. The air area would
A end up half the size it changed into on the surface.
B not exchange in length.
C come to be 1/three the size it turned into at the surface.
D come to be 2/three the dimensions it become on the surface.
C A cold, hypersensitivity or some other scientific hassle.
A bloodless, or any congestion, can block air passages for your ears and sinuses, making
equalization difficult or impossible.
See Being a Diver I - The Effects of Increasing Pressure on Body Air Spaces. - ANS4) If I am
now not able to equalize (clear) my frame air spaces, it could be because I even have
A seasickness.
B coronary heart disorder and high blood strain.
C a chilly, hypersensitive reaction or some other medical problem.
D anxiety.
C I am feeling a squeeze and want to equalize.
Pain on your ears or sinuses means that they aren't equalized. Stop your descent and ascend
barely to alleviate stress in your ears. Then try to equalize once more. If you can't equalize, give
up the dive.
See Being a Diver I - The Effects of Increasing Pressure on Body Air Spaces. - ANS5) If my
ears or sinuses harm while I am descending (going down), it usually manner
A my air spaces are equalized.
B my masks strap is too tight.
C I am feeling a squeeze and need to equalize.
D my masks is simply too small.
B In the triangle location shaped by using my chin and the decrease corners of my rib cage.
Your trade air supply attaches with a brief launch inside the triangle location shaped by way of
your chin and the decrease corners of your rib cage. Avoid letting your change air source cling
unsecured from your package.
, See Equipment I - Regulators. - ANS6) The great vicinity for me to position an exchange air
supply is
A free by using my side so I can find it rapid.
B in the triangle vicinity formed by using my chin and the decrease corners of my rib cage.
C to the bottom of my cylinder.
D to the back of my BCD between my shoulder blades and waist.
D Holding my breath while scuba diving.
Blocking off your lungs with the aid of holding your breath and ascending could reason them to
overexpand and rupture, that is a extreme harm that might bring about paralysis and death.
Breathing continuously whilst scuba diving continues air passages open allowing increasing air
to get away.
See Being a Diver I - The Effects of Decreasing Pressure on Body Air Spaces. - ANS7) Lung
overexpansion accidents may be as a result of
A scuba diving without a friend.
B persevering with a dive while not properly weighted.
C not consuming sufficient water earlier than scuba diving.
D retaining my breath while scuba diving.
B 20 minutes
60/three=20
For every 10 meters we pass down, we've got one greater environment of stress. Also, recollect
to feature in the 1 environment of stress at the surface.
So, taking place to 20 meters, we can have 2 atm + 1 atm = 3 atm of pressure. - ANS8) If my
cylinder of air lasts 60 mins even as I am on the surface breathing normally, assuming all else is
the same, how long will it closing at 20 meters breathing commonly?
A 60 minutes
B 20 minutes
C 15 mins
D 12 mins
A Once a year.
Have your cylinder visually inspected yearly for internal corrosion or different
contamination/damage.
