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AIDA 2 freediving written exam ACTUAL VERIFIED
EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS LATEST UPDATE THIS YEAR.pdf||NEWEST
EXAM!!!
An object weighs 522 lbs and displaces 4.4 cu feet of
water. How much additional sea water do you need to
displace to give the object 80 lbs of positive buoyancy?
Round to closest c ft. - Answer-5.01 cu ft
Find weight of water it displaces 4.4x64 = 281.6 .
Take weight of object - weight of water it displaces.
522-281.6 = 240.4
240.4 + 80 lbs of positive buoyancy = 320.4
320.4/64 = 5.01
What is the absolute pressure in ATA at 85 ft fresh water? -
Answer-3.5 ATA
Take 85 ft/34 + 1 = 3.5
You take a gas volume of 2 liters in a flexible container
from the surface to a depth of 56' in sea water. What will
the new volume be and what will the density be compared
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to the surface. Round to the nearest decimal point. -
Answer-Volume: .74, Density 1.48
find the ATA: 56'/33+1 = 2.7 ATA
to find volume divide the # of liters by the ATA:
2/2.7 = .74
to find Density take the volume and multiply by the number
of liters:
.74x2= 1.48
You take 3.5 liters /cu feet of gas in a flexible container
from 106 ft in fresh water to 73 feet. What will the new
volume be? - Answer-4.58 liters
find the atmosphere: 106/34+1= 4.12
take the number of liters times the ATA for surface
pressure: 3.5x4.12= 14.42
find the ATA of new depth: 73/34+1 = 3.15
take 14.42, surface pressure and divide by new ata 3.15
14.42/3.15= 4.58
A diver consumes 110 psi per minute at 108 ft in sea water
with a given cylinder. Using the same cylinder, what is the
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diver's consumption rate at 86 feet? Round to the closest
whole bar/psi - Answer-93.1
first find ata of 107ft
108/33+1= 4.27 ATA
take 110 psi/4.27 to find how much they consume at the
surface
110/4.27 = 25.8
find the ATA of 86 feet
86/33+1= 3.61
Multiply 25.8 (surface rate) by 3.61 ATA at 86 feet
25.8x3.61 = 93
The unprotected human body loses heat approximately
____ times faster in water than air. - Answer-20
Refraction causes objects underwater to be magnified
approximately _____%. - Answer-33%
Underwater, turbidity can cause objects to look farther
away than they really are, a phenomenon called
_____________________________. - Answer-Visual
reversal
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Sound travels approximately how many times faster in
water than in air? - Answer-4
Underwater, most sounds seem to come from
________________. - Answer-overhead
An object weighs 125 lbs and displaces 2 cu ft of water.
Disregarding the minimal displacement of the lead, how
much lead weight do you need to make it 50 lbs negatively
buoyant in sea water? Round to closest lb. - Answer-53
lbs lead weight
Find weight of water it displaces, 64x2 = 128.
Then take the weight of the object-the weight of water it
displaces: 125-128 = -3 lbs.
Then add the 50lbs + the -3 lbs=53 lbs lead weight.
In a mixture of gases, the portion of the absolute pressure
exerted by one of the gases in the mix is called the
__________________________. - Answer-Partial
pressure
For a given percentage of gas in a mix of breathing gases,
as the depth increases, the physiological effect of that
gases will _____________________. - Answer-Increase
AIDA 2 freediving written exam ACTUAL VERIFIED
EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS LATEST UPDATE THIS YEAR.pdf||NEWEST
EXAM!!!
An object weighs 522 lbs and displaces 4.4 cu feet of
water. How much additional sea water do you need to
displace to give the object 80 lbs of positive buoyancy?
Round to closest c ft. - Answer-5.01 cu ft
Find weight of water it displaces 4.4x64 = 281.6 .
Take weight of object - weight of water it displaces.
522-281.6 = 240.4
240.4 + 80 lbs of positive buoyancy = 320.4
320.4/64 = 5.01
What is the absolute pressure in ATA at 85 ft fresh water? -
Answer-3.5 ATA
Take 85 ft/34 + 1 = 3.5
You take a gas volume of 2 liters in a flexible container
from the surface to a depth of 56' in sea water. What will
the new volume be and what will the density be compared
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to the surface. Round to the nearest decimal point. -
Answer-Volume: .74, Density 1.48
find the ATA: 56'/33+1 = 2.7 ATA
to find volume divide the # of liters by the ATA:
2/2.7 = .74
to find Density take the volume and multiply by the number
of liters:
.74x2= 1.48
You take 3.5 liters /cu feet of gas in a flexible container
from 106 ft in fresh water to 73 feet. What will the new
volume be? - Answer-4.58 liters
find the atmosphere: 106/34+1= 4.12
take the number of liters times the ATA for surface
pressure: 3.5x4.12= 14.42
find the ATA of new depth: 73/34+1 = 3.15
take 14.42, surface pressure and divide by new ata 3.15
14.42/3.15= 4.58
A diver consumes 110 psi per minute at 108 ft in sea water
with a given cylinder. Using the same cylinder, what is the
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diver's consumption rate at 86 feet? Round to the closest
whole bar/psi - Answer-93.1
first find ata of 107ft
108/33+1= 4.27 ATA
take 110 psi/4.27 to find how much they consume at the
surface
110/4.27 = 25.8
find the ATA of 86 feet
86/33+1= 3.61
Multiply 25.8 (surface rate) by 3.61 ATA at 86 feet
25.8x3.61 = 93
The unprotected human body loses heat approximately
____ times faster in water than air. - Answer-20
Refraction causes objects underwater to be magnified
approximately _____%. - Answer-33%
Underwater, turbidity can cause objects to look farther
away than they really are, a phenomenon called
_____________________________. - Answer-Visual
reversal
, 4|Page
Sound travels approximately how many times faster in
water than in air? - Answer-4
Underwater, most sounds seem to come from
________________. - Answer-overhead
An object weighs 125 lbs and displaces 2 cu ft of water.
Disregarding the minimal displacement of the lead, how
much lead weight do you need to make it 50 lbs negatively
buoyant in sea water? Round to closest lb. - Answer-53
lbs lead weight
Find weight of water it displaces, 64x2 = 128.
Then take the weight of the object-the weight of water it
displaces: 125-128 = -3 lbs.
Then add the 50lbs + the -3 lbs=53 lbs lead weight.
In a mixture of gases, the portion of the absolute pressure
exerted by one of the gases in the mix is called the
__________________________. - Answer-Partial
pressure
For a given percentage of gas in a mix of breathing gases,
as the depth increases, the physiological effect of that
gases will _____________________. - Answer-Increase
