SSI OPEN WATER DIVER LATEST 2026 ALL FINALS
QUESTIONS AND ANSWERS MARKED A+
✔✔What are the three ways we lose body heat while diving? - ✔✔conduction, external
conduction, and convection.
✔✔external conduction - ✔✔direct transfer of heat energy from molecule to molecule
(body simply giving off heat
✔✔blood shunting - ✔✔the body slows the speed of circulation when the extremities get
too cold to protect internal organs and the brain
✔✔what is the proper swimming position (attitude)? - ✔✔15-20 deg above horizontal
✔✔what does the SCUBA delivery system include? - ✔✔regulator, alternate air source,
and high pressure scuba cylinder
✔✔positive buoyancy - ✔✔an object that weighs less than the weight of the liquid
around it will float
✔✔negative buoyancy - ✔✔an object that weighs more than the weight of the liquid
around it will sink
✔✔neutral buoyancy - ✔✔an object that weighs equal to the weight of the liquid around
it will remain neutral, neither sinking nor floating
✔✔whats the first rule of scuba? - ✔✔breath continuously
✔✔whats the second rule of scuba? - ✔✔ascend slowly and maintain control (no more
than 30 ft. per minute)
✔✔what is the third rule of scuba? - ✔✔never dive alone or beyond your level of training
✔✔one of the primary factors contributing to heat loss for divers is: - ✔✔convection
✔✔an object immersed in water will be buoyed upward by a force _______ the weight
of the water it displaces - ✔✔equal to
✔✔assuming a consistent air consumption rate, diving at a pressure of 4 ata will use
_____ as much air as diving at 2 ata. - ✔✔2 times
✔✔the purpose of a BC is to: - ✔✔control ascent and descent rates; maintain neutral
buoyancy during the dive; provide surface floatation
, ✔✔during normal activities, divers should never exceed an ascent rate of _______ feet
per minute - ✔✔30
✔✔a high pressure scuba cylinder should be stored: - ✔✔secured and with a minimum
of 500 to 750 psi
✔✔What is the threshold of overpressure that the lungs can withstand? - ✔✔2 psi
✔✔Arterial Gas embolism (AGE) - ✔✔-most serious
-gas bubbles are released into the circulatory system via ruptured alveoli in the lungs,
blocking circulation on ascent
signs: unconsciousness, coma, respiratory distress, loss of small motor and gross
control, headache, vertigo, visual auditory and speech abnormalities
✔✔pneumothorax - ✔✔-second most serious
-air escapes lungs (over-expansion) and gets between pleura and rib cage
-can cause collapsed lung
signs: breathing difficulties, chest pain, weakness, cyanosis
✔✔subcutaneous emphysema - ✔✔-air escapes from lungs into mediastinum and
moved along trachea into region around the collar bone
signs: swelling in neck with crepitation, voice change, trouble breathing
✔✔mediastinal emphysema - ✔✔air escapes lungs into mediastinum and presses on
heart and blood vessels
signs: chest pain, breathing difficulties, weakness, collapse, cyanosis
✔✔what is often the only sign of an injury? - ✔✔unconsciousness
✔✔What are the five ways to prevent over-expansion injuries? - ✔✔1. breath
continuously
2. don't dive with congestion
3. don't smoke
4. use the right equipment in good condition
5. take your time
✔✔what are the four main steps of first aid for overexpansion? - ✔✔1. treat for shock
2. administer oxygen
3. stand by to administer cpr
4. obtain proper medical aid as quickly as possible
QUESTIONS AND ANSWERS MARKED A+
✔✔What are the three ways we lose body heat while diving? - ✔✔conduction, external
conduction, and convection.
✔✔external conduction - ✔✔direct transfer of heat energy from molecule to molecule
(body simply giving off heat
✔✔blood shunting - ✔✔the body slows the speed of circulation when the extremities get
too cold to protect internal organs and the brain
✔✔what is the proper swimming position (attitude)? - ✔✔15-20 deg above horizontal
✔✔what does the SCUBA delivery system include? - ✔✔regulator, alternate air source,
and high pressure scuba cylinder
✔✔positive buoyancy - ✔✔an object that weighs less than the weight of the liquid
around it will float
✔✔negative buoyancy - ✔✔an object that weighs more than the weight of the liquid
around it will sink
✔✔neutral buoyancy - ✔✔an object that weighs equal to the weight of the liquid around
it will remain neutral, neither sinking nor floating
✔✔whats the first rule of scuba? - ✔✔breath continuously
✔✔whats the second rule of scuba? - ✔✔ascend slowly and maintain control (no more
than 30 ft. per minute)
✔✔what is the third rule of scuba? - ✔✔never dive alone or beyond your level of training
✔✔one of the primary factors contributing to heat loss for divers is: - ✔✔convection
✔✔an object immersed in water will be buoyed upward by a force _______ the weight
of the water it displaces - ✔✔equal to
✔✔assuming a consistent air consumption rate, diving at a pressure of 4 ata will use
_____ as much air as diving at 2 ata. - ✔✔2 times
✔✔the purpose of a BC is to: - ✔✔control ascent and descent rates; maintain neutral
buoyancy during the dive; provide surface floatation
, ✔✔during normal activities, divers should never exceed an ascent rate of _______ feet
per minute - ✔✔30
✔✔a high pressure scuba cylinder should be stored: - ✔✔secured and with a minimum
of 500 to 750 psi
✔✔What is the threshold of overpressure that the lungs can withstand? - ✔✔2 psi
✔✔Arterial Gas embolism (AGE) - ✔✔-most serious
-gas bubbles are released into the circulatory system via ruptured alveoli in the lungs,
blocking circulation on ascent
signs: unconsciousness, coma, respiratory distress, loss of small motor and gross
control, headache, vertigo, visual auditory and speech abnormalities
✔✔pneumothorax - ✔✔-second most serious
-air escapes lungs (over-expansion) and gets between pleura and rib cage
-can cause collapsed lung
signs: breathing difficulties, chest pain, weakness, cyanosis
✔✔subcutaneous emphysema - ✔✔-air escapes from lungs into mediastinum and
moved along trachea into region around the collar bone
signs: swelling in neck with crepitation, voice change, trouble breathing
✔✔mediastinal emphysema - ✔✔air escapes lungs into mediastinum and presses on
heart and blood vessels
signs: chest pain, breathing difficulties, weakness, collapse, cyanosis
✔✔what is often the only sign of an injury? - ✔✔unconsciousness
✔✔What are the five ways to prevent over-expansion injuries? - ✔✔1. breath
continuously
2. don't dive with congestion
3. don't smoke
4. use the right equipment in good condition
5. take your time
✔✔what are the four main steps of first aid for overexpansion? - ✔✔1. treat for shock
2. administer oxygen
3. stand by to administer cpr
4. obtain proper medical aid as quickly as possible
