IANTD OPEN WATER DIVER 2025
QUESTIONS WITH COMPLETE
SOLUTIONS!!
1 of 63
Term
In the tank marking CTC/DOT 3AL 3000 what does the 3000 stand
for?
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3000 Liters 3000 Cubic Feet
3000 PSI 3000 Bar
, Don't know?
2 of 63
Term
List three benefits to dive computers.
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A dive computer records altitude, A dive computer monitors heart
wind speed, and water salinity. rate, air pressure, and humidity.
A dive computer tracks water
temperature, visibility, and oxygen A dive computer tracks dive
levels. time, depth, and no stop time.
Don't know?
3 of 63
Term
List the 3 main gasses in air and their percentage
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A. Oxygen 20% B. Nitrogen Carbon monoxide, carbon
79% C. Carbon Dioxide .03% monoxide poisoning
, A dive computer tracks dive Cherry red lips and nails,
time, depth, and no stop time. dizziness, numbness, headache,
unconsciousness
Don't know?
4 of 63
Term
Can you taste carbon monoxide in your air before a dive?
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75 Minutes No
3AA Stands for steel Once a year
Don't know?
5 of 63
Term
What is a K valve?
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, A simple on/off valve You won't be able to clear C02
Piston or diaphram A valve with a built in reserve switch
Don't know?
6 of 63
Term
Whas gas is the main trigger that makes you want to breathe?
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C02 Oxygen
Helium Nitrogen
Don't know?
7 of 63
Term
Why should a snorkel not be over 18"?
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QUESTIONS WITH COMPLETE
SOLUTIONS!!
1 of 63
Term
In the tank marking CTC/DOT 3AL 3000 what does the 3000 stand
for?
Give this one a try later!
3000 Liters 3000 Cubic Feet
3000 PSI 3000 Bar
, Don't know?
2 of 63
Term
List three benefits to dive computers.
Give this one a try later!
A dive computer records altitude, A dive computer monitors heart
wind speed, and water salinity. rate, air pressure, and humidity.
A dive computer tracks water
temperature, visibility, and oxygen A dive computer tracks dive
levels. time, depth, and no stop time.
Don't know?
3 of 63
Term
List the 3 main gasses in air and their percentage
Give this one a try later!
A. Oxygen 20% B. Nitrogen Carbon monoxide, carbon
79% C. Carbon Dioxide .03% monoxide poisoning
, A dive computer tracks dive Cherry red lips and nails,
time, depth, and no stop time. dizziness, numbness, headache,
unconsciousness
Don't know?
4 of 63
Term
Can you taste carbon monoxide in your air before a dive?
Give this one a try later!
75 Minutes No
3AA Stands for steel Once a year
Don't know?
5 of 63
Term
What is a K valve?
Give this one a try later!
, A simple on/off valve You won't be able to clear C02
Piston or diaphram A valve with a built in reserve switch
Don't know?
6 of 63
Term
Whas gas is the main trigger that makes you want to breathe?
Give this one a try later!
C02 Oxygen
Helium Nitrogen
Don't know?
7 of 63
Term
Why should a snorkel not be over 18"?
Give this one a try later!
