SSI SCUBA Open Water Diving
Certification complete set with
Questions And simplified correct
Answers
The purpose of equalization is to - correct answer-Introduce additional air into body air spaces in
response to increasing external pressure
Body heat is lost ________ than in air - correct answer-25 to 30 times faster
The absolute pressure expressed in terms of atmospheres absolute at 99 feet in salt water - correct
answer-4 ata
One atmosphere of pressure is defined as - correct answer-- Each 34 feet of depth in freshwater
- 1 ata
- Each 33 feet of depth in sea water
Describing diving with the acronym SCUBA came from what event? - correct answer-The development of
the demand regulator in 1943
Sinus squeeze can be prevented by - correct answer-Not diving with a cold
The greatest relative pressure change in sea water takes place between ___ and ___ feet - correct
answer-0 and 33
Underwater, the bending of light rays causes objects to appear to be: - correct answer-closer
Ear squeeze can be prevented by: - correct answer-- Relaxing
- Never diving with a cold
- Rotating the jaw, swallowing, or Valsalva
Earplugs... - correct answer-should never been worn while diving
If you experience pain in your ears during descent: - correct answer-Stop the descent and ascend until
the pain stops
Which of the statements concerning sound transmission underwater is correct? - correct answer-- Divers
find it difficult to locate the direction of a sound producing source
- Sound will travel farther underwater than in air
- Sound travels four times faster underwater than in air
The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water is - correct
answer-2 ata
If a flexible air-filled container has a volume of 40 cu ft on the surface, what would the volume be at 99
feet in sea water? - correct answer-10 cu ft
Gauge pressure is defined as: - correct answer-Absolute pressure minus one
The condition in which certain colors are diminished as depth increases is called: - correct answer-
Absorption
your Delivery system should be serviced and preformance checked: - correct answer-every year
The purpose of a BC is to: - correct answer-Control ascent and descent rates, maintain neutral buoyancy
during the dive, provide surface flotation
The Buoyancy Control System components are: - correct answer-buoyancy compensator, inflation device,
and weight belt
A scuba cylinder must be hydrostatically tested: - correct answer-Within fixed interval set by local law
the SSI Equipment Service Program is designed to: - correct answer-Keep all the components of the Total
Diving System to Optimal Performance
, what affects a diver's air consumption rate? - correct answer--poor physical conditioning
-extreme exertion from working heavily
-extreme stress brought on by improper response to anxiety-producing situations
One of the primary factors contribution to heat loss for divers is - correct answer-convection
Which of the following Total Diving System subsystems best describes the SCUBA unit? - correct answer-
The Delivery Sytem
The Information System components are: - correct answer-Dive computer, Analogue instruments, and SSI
total dive log
A high pressure scuba cylinder should be stored: - correct answer-secured and with a minimum of 500 to
750 psi
During normal diving activities, divers should never exceed an ascent rate of ________ feet per minute. -
correct answer-30
three primary features to look for in a qualtiy Exposure System are: - correct answer-thickness, fit, and
seam integrity
assuming a constant air consumption rate, diving at a pressure of 4 ata will use __ as much air as diving
at 2 ata - correct answer-2 times
a scuba tank for recreational diving should be filled with - correct answer-pure, filtered compressed air
or Nitrox
The only accepted treatment for Arterial Gas Embolism is: - correct answer-stabilize victim in nearest
medical facility and transport to decompression
Which of the following over expansion injuries can be characterized by swelling in the neck area with a
crackling sensation upon touching the swollen area? - correct answer-Subcutaneous emphysema
The most serious lung overexpansion injury is: - correct answer-Aretrial Gas Embolism
Which of the following would be inappropriate treatment for a diver exhibiting symptoms of
Decompression Sickness? - correct answer-taking the victim back underwater
The best prevention for decompression sickness is to: - correct answer-Plan your dive and dive your plan
In air at 1 ata, the partial pressure of nitrogen is___, oxygen is_____. - correct answer-0.79/0.21 ata
Decompression sickness occurs when: - correct answer--A diver stays at depth for too long or surfaces
too quickly
-Excess nitrogen bubbles into the blood and tissues
-nitrogen tissue tolerance gradient is exceeded
Diving at altitude or flying after diving: - correct answer-Requires special diving computer functions,
altitude tables and/or refraining from flying from at least 24 hours after the completion of a dive
The proper first aid for Arterial Gas Embolism, subcutaneous emphysema, pneumothorax, and
mediastinal emphysema is: - correct answer--watch vital signs
-treat for shock
-CPR
-Administer oxygen
-seek recompression chamber
The term gradient can be described as: - correct answer-The difference between the internal partial
pressure and the external partial pressure of a gas.
Over expansion injuries can be prevented by: - correct answer--Learning correct breathing patterns
-Dive with a properly maintained Total Diving System
-Never holding your breath
Haldanes theory that the human body can withstand a 2:1 pressure difference was revised by D
Workman to a nitrogen ratio of: - correct answer-1.58:1
Other symptoms of decompression sickness include: - correct answer--paralysis and loss of manual
dexterity
Certification complete set with
Questions And simplified correct
Answers
The purpose of equalization is to - correct answer-Introduce additional air into body air spaces in
response to increasing external pressure
Body heat is lost ________ than in air - correct answer-25 to 30 times faster
The absolute pressure expressed in terms of atmospheres absolute at 99 feet in salt water - correct
answer-4 ata
One atmosphere of pressure is defined as - correct answer-- Each 34 feet of depth in freshwater
- 1 ata
- Each 33 feet of depth in sea water
Describing diving with the acronym SCUBA came from what event? - correct answer-The development of
the demand regulator in 1943
Sinus squeeze can be prevented by - correct answer-Not diving with a cold
The greatest relative pressure change in sea water takes place between ___ and ___ feet - correct
answer-0 and 33
Underwater, the bending of light rays causes objects to appear to be: - correct answer-closer
Ear squeeze can be prevented by: - correct answer-- Relaxing
- Never diving with a cold
- Rotating the jaw, swallowing, or Valsalva
Earplugs... - correct answer-should never been worn while diving
If you experience pain in your ears during descent: - correct answer-Stop the descent and ascend until
the pain stops
Which of the statements concerning sound transmission underwater is correct? - correct answer-- Divers
find it difficult to locate the direction of a sound producing source
- Sound will travel farther underwater than in air
- Sound travels four times faster underwater than in air
The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water is - correct
answer-2 ata
If a flexible air-filled container has a volume of 40 cu ft on the surface, what would the volume be at 99
feet in sea water? - correct answer-10 cu ft
Gauge pressure is defined as: - correct answer-Absolute pressure minus one
The condition in which certain colors are diminished as depth increases is called: - correct answer-
Absorption
your Delivery system should be serviced and preformance checked: - correct answer-every year
The purpose of a BC is to: - correct answer-Control ascent and descent rates, maintain neutral buoyancy
during the dive, provide surface flotation
The Buoyancy Control System components are: - correct answer-buoyancy compensator, inflation device,
and weight belt
A scuba cylinder must be hydrostatically tested: - correct answer-Within fixed interval set by local law
the SSI Equipment Service Program is designed to: - correct answer-Keep all the components of the Total
Diving System to Optimal Performance
, what affects a diver's air consumption rate? - correct answer--poor physical conditioning
-extreme exertion from working heavily
-extreme stress brought on by improper response to anxiety-producing situations
One of the primary factors contribution to heat loss for divers is - correct answer-convection
Which of the following Total Diving System subsystems best describes the SCUBA unit? - correct answer-
The Delivery Sytem
The Information System components are: - correct answer-Dive computer, Analogue instruments, and SSI
total dive log
A high pressure scuba cylinder should be stored: - correct answer-secured and with a minimum of 500 to
750 psi
During normal diving activities, divers should never exceed an ascent rate of ________ feet per minute. -
correct answer-30
three primary features to look for in a qualtiy Exposure System are: - correct answer-thickness, fit, and
seam integrity
assuming a constant air consumption rate, diving at a pressure of 4 ata will use __ as much air as diving
at 2 ata - correct answer-2 times
a scuba tank for recreational diving should be filled with - correct answer-pure, filtered compressed air
or Nitrox
The only accepted treatment for Arterial Gas Embolism is: - correct answer-stabilize victim in nearest
medical facility and transport to decompression
Which of the following over expansion injuries can be characterized by swelling in the neck area with a
crackling sensation upon touching the swollen area? - correct answer-Subcutaneous emphysema
The most serious lung overexpansion injury is: - correct answer-Aretrial Gas Embolism
Which of the following would be inappropriate treatment for a diver exhibiting symptoms of
Decompression Sickness? - correct answer-taking the victim back underwater
The best prevention for decompression sickness is to: - correct answer-Plan your dive and dive your plan
In air at 1 ata, the partial pressure of nitrogen is___, oxygen is_____. - correct answer-0.79/0.21 ata
Decompression sickness occurs when: - correct answer--A diver stays at depth for too long or surfaces
too quickly
-Excess nitrogen bubbles into the blood and tissues
-nitrogen tissue tolerance gradient is exceeded
Diving at altitude or flying after diving: - correct answer-Requires special diving computer functions,
altitude tables and/or refraining from flying from at least 24 hours after the completion of a dive
The proper first aid for Arterial Gas Embolism, subcutaneous emphysema, pneumothorax, and
mediastinal emphysema is: - correct answer--watch vital signs
-treat for shock
-CPR
-Administer oxygen
-seek recompression chamber
The term gradient can be described as: - correct answer-The difference between the internal partial
pressure and the external partial pressure of a gas.
Over expansion injuries can be prevented by: - correct answer--Learning correct breathing patterns
-Dive with a properly maintained Total Diving System
-Never holding your breath
Haldanes theory that the human body can withstand a 2:1 pressure difference was revised by D
Workman to a nitrogen ratio of: - correct answer-1.58:1
Other symptoms of decompression sickness include: - correct answer--paralysis and loss of manual
dexterity
