PADI OPEN WATER QUESTIONS AND SOLUTIONS
GUARANTEE A+
✔✔40: If I think I have decompression sickness I should
A stop diving until I feel better.
B go back in the water.
C breathe 100 percent oxygen and contact emergency medical care.
D see a doctor when I can. - ✔✔C Breathe 100 percent oxygen and contact emergency
medical care.
For a suspected case of decompression illness, contact emergency medical care, lie
down and breathe emergency oxygen. Almost all cases of decompression illness
require treatment in a recompression chamber. Don't delay first aid and getting to
treatment. See Using Dive Computers and Tables II - First Aid Treatment for
Decompression Illness.
✔✔41: The first step in using my dive computer is
A setting the time and date.
B reading the manufacturer's instructions.
C calibrating it for enriched air nitrox.
D setting it for fresh or salt water. - ✔✔B Reading the manufacturer's instructions.
Before you dive with a computer, you need to read the manufacturer's dive computer
manual. It's your responsibility to read and understand the manufacturer's instructions.
See Using Dive Computers and Tables I - Planning Dives with Your Computer.
✔✔42: When planning a dive with a computer, I use the "plan" or "no stop scroll" mode
to determine
A the maximum depth of the previous dive.
B the maximum allowable time limits for depths (typically in 3-metre/10-foot increments).
C whether my computer is compatible with my buddy's computer.
D the best settings for my backup computer. - ✔✔B The maximum allowable time limits
for depths (typically in 3-metre/10-foot increments).
You plan dives with your dive computer by activating it and scrolling the no stop limits.
With most computers, you scroll depths in 3 metre/10 foot increments, displaying the
maximum time allowed at each depth. Agree with your buddy on a maximum depth
based on the no stop times displayed. See Using Dive Computers and Tables I -
Planning Dives with Your Computer.
✔✔43: When making computer assisted dives
, A each diver needs a personal computer.
B each buddy team needs a computer
C up to four divers may share a computer.
D all divers may follow the dive guide's computer. - ✔✔A Each diver needs a personal
computer.
Divers can't share a dive computer. Each diver needs a computer and the buddy team
should follow the most conservative computer to turn or end a dive. See Using Dive
Computers and Tables I - Diving with Your Computer.
✔✔44: It's important that I do not turn off a dive computer between dives because
A the divemaster may object because I can't recall the dive information for logging.
B it would lose memory of the previous dive and not calculate repetitive dives correctly.
C it won't come back on, or it may take a long time to power up.
D doing so is hard on the batteries and may cause the computer to fail. - ✔✔B It would
lose memory of the previous dive and not calculate repetitive dives correctly.
Your dive computer tracks your personal theoretical nitrogen levels continuously during
all your dives and surface intervals. For your safety, to keep an accurate account, you
must not turn off your computer and need to use the same computer the entire diving
day, on all dives. See Using Dive Computers and Tables I - Repetitive Diving.
✔✔45: If I accidentally exceed my computer's no stop limits, I should
A make a safety stop for three minutes at 5 metres/15 feet.
B follow the computer's instructions for decompression.
C surface immediately, breathe oxygen and report my condition to the divemaster.
D make a controlled ascent and refer to the manufacturer's literature for decompression
procedures. - ✔✔B Follow the computer's instructions for decompression.
If you exceed a no stop limit, you will have to make an emergency decompression stop.
You computer will go into decompression mode and guide you by providing the depth of
your emergency decompression stop and how long you have to stay there before you
can ascend to the surface. Emergency decompression stops are required so that you
don't exceed accepted theoretical nitrogen levels. See Using Dive Computers and
Tables II - Emergency Decompression Stops.
✔✔46: If I'm diving in cold water or under strenuous conditions
A I should add an extra safety margin and stay well within my computer's limits.
B nitrogen absorption will be slower so I can stay longer.
C my dive computer will probably not work at all.
D I do not need to do anything special. - ✔✔A I should add an extra safety margin and
stay well within my computer's limits.
GUARANTEE A+
✔✔40: If I think I have decompression sickness I should
A stop diving until I feel better.
B go back in the water.
C breathe 100 percent oxygen and contact emergency medical care.
D see a doctor when I can. - ✔✔C Breathe 100 percent oxygen and contact emergency
medical care.
For a suspected case of decompression illness, contact emergency medical care, lie
down and breathe emergency oxygen. Almost all cases of decompression illness
require treatment in a recompression chamber. Don't delay first aid and getting to
treatment. See Using Dive Computers and Tables II - First Aid Treatment for
Decompression Illness.
✔✔41: The first step in using my dive computer is
A setting the time and date.
B reading the manufacturer's instructions.
C calibrating it for enriched air nitrox.
D setting it for fresh or salt water. - ✔✔B Reading the manufacturer's instructions.
Before you dive with a computer, you need to read the manufacturer's dive computer
manual. It's your responsibility to read and understand the manufacturer's instructions.
See Using Dive Computers and Tables I - Planning Dives with Your Computer.
✔✔42: When planning a dive with a computer, I use the "plan" or "no stop scroll" mode
to determine
A the maximum depth of the previous dive.
B the maximum allowable time limits for depths (typically in 3-metre/10-foot increments).
C whether my computer is compatible with my buddy's computer.
D the best settings for my backup computer. - ✔✔B The maximum allowable time limits
for depths (typically in 3-metre/10-foot increments).
You plan dives with your dive computer by activating it and scrolling the no stop limits.
With most computers, you scroll depths in 3 metre/10 foot increments, displaying the
maximum time allowed at each depth. Agree with your buddy on a maximum depth
based on the no stop times displayed. See Using Dive Computers and Tables I -
Planning Dives with Your Computer.
✔✔43: When making computer assisted dives
, A each diver needs a personal computer.
B each buddy team needs a computer
C up to four divers may share a computer.
D all divers may follow the dive guide's computer. - ✔✔A Each diver needs a personal
computer.
Divers can't share a dive computer. Each diver needs a computer and the buddy team
should follow the most conservative computer to turn or end a dive. See Using Dive
Computers and Tables I - Diving with Your Computer.
✔✔44: It's important that I do not turn off a dive computer between dives because
A the divemaster may object because I can't recall the dive information for logging.
B it would lose memory of the previous dive and not calculate repetitive dives correctly.
C it won't come back on, or it may take a long time to power up.
D doing so is hard on the batteries and may cause the computer to fail. - ✔✔B It would
lose memory of the previous dive and not calculate repetitive dives correctly.
Your dive computer tracks your personal theoretical nitrogen levels continuously during
all your dives and surface intervals. For your safety, to keep an accurate account, you
must not turn off your computer and need to use the same computer the entire diving
day, on all dives. See Using Dive Computers and Tables I - Repetitive Diving.
✔✔45: If I accidentally exceed my computer's no stop limits, I should
A make a safety stop for three minutes at 5 metres/15 feet.
B follow the computer's instructions for decompression.
C surface immediately, breathe oxygen and report my condition to the divemaster.
D make a controlled ascent and refer to the manufacturer's literature for decompression
procedures. - ✔✔B Follow the computer's instructions for decompression.
If you exceed a no stop limit, you will have to make an emergency decompression stop.
You computer will go into decompression mode and guide you by providing the depth of
your emergency decompression stop and how long you have to stay there before you
can ascend to the surface. Emergency decompression stops are required so that you
don't exceed accepted theoretical nitrogen levels. See Using Dive Computers and
Tables II - Emergency Decompression Stops.
✔✔46: If I'm diving in cold water or under strenuous conditions
A I should add an extra safety margin and stay well within my computer's limits.
B nitrogen absorption will be slower so I can stay longer.
C my dive computer will probably not work at all.
D I do not need to do anything special. - ✔✔A I should add an extra safety margin and
stay well within my computer's limits.
