SSI SCUBA Open Water Diving
Certification
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? - ✔️✔️10 cu ft
Gauge pressure is defined as: - ✔️✔️Absolute pressure minus one
The condition in which certain colors are diminished as depth increases is called: -
✔️✔️Absorption
your Delivery system should be serviced and preformance checked: - ✔️✔️every year
The purpose of a BC is to: - ✔️✔️Control ascent and descent rates, maintain neutral
buoyancy during the dive, provide surface flotation
Sinus squeeze can be prevented by - ✔️✔️Not diving with a cold
The greatest relative pressure change in sea water takes place between ___ and ___
feet - ✔️✔️0 and 33
Underwater, the bending of light rays causes objects to appear to be: - ✔️✔️closer
Ear squeeze can be prevented by: - ✔️✔️- Relaxing
- Never diving with a cold
- Rotating the jaw, swallowing, or Valsalva
Earplugs... - ✔️✔️should never been worn while diving
If you experience pain in your ears during descent: - ✔️✔️Stop the descent and ascend
until the pain stops
Which of the statements concerning sound transmission underwater is correct? - ✔️✔️-
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 purpose of equalization is to - ✔️✔️Introduce additional air into body air spaces in
response to increasing external pressure
Body heat is lost ________ than in air - ✔️✔️25 to 30 times faster
, The absolute pressure expressed in terms of atmospheres absolute at 99 feet in salt
water - ✔️✔️4 ata
One atmosphere of pressure is defined as - ✔️✔️- 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? - ✔️✔️The
development of the demand regulator in 1943
The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea
water is - ✔️✔️2 ata
The Buoyancy Control System components are: - ✔️✔️buoyancy compensator,
inflation device, and weight belt
A scuba cylinder must be hydrostatically tested: - ✔️✔️Within fixed interval set by local
law
the SSI Equipment Service Program is designed to: - ✔️✔️Keep all the components of
the Total Diving System to Optimal Performance
what affects a diver's air consumption rate? - ✔️✔️-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 - ✔️✔️convection
Which of the following Total Diving System subsystems best describes the SCUBA
unit? - ✔️✔️The Delivery Sytem
The Information System components are: - ✔️✔️Dive computer, Analogue instruments,
and SSI total dive log
A high pressure scuba cylinder should be stored: - ✔️✔️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. - ✔️✔️30
three primary features to look for in a qualtiy Exposure System are: - ✔️✔️thickness,
fit, and seam integrity
Certification
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? - ✔️✔️10 cu ft
Gauge pressure is defined as: - ✔️✔️Absolute pressure minus one
The condition in which certain colors are diminished as depth increases is called: -
✔️✔️Absorption
your Delivery system should be serviced and preformance checked: - ✔️✔️every year
The purpose of a BC is to: - ✔️✔️Control ascent and descent rates, maintain neutral
buoyancy during the dive, provide surface flotation
Sinus squeeze can be prevented by - ✔️✔️Not diving with a cold
The greatest relative pressure change in sea water takes place between ___ and ___
feet - ✔️✔️0 and 33
Underwater, the bending of light rays causes objects to appear to be: - ✔️✔️closer
Ear squeeze can be prevented by: - ✔️✔️- Relaxing
- Never diving with a cold
- Rotating the jaw, swallowing, or Valsalva
Earplugs... - ✔️✔️should never been worn while diving
If you experience pain in your ears during descent: - ✔️✔️Stop the descent and ascend
until the pain stops
Which of the statements concerning sound transmission underwater is correct? - ✔️✔️-
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 purpose of equalization is to - ✔️✔️Introduce additional air into body air spaces in
response to increasing external pressure
Body heat is lost ________ than in air - ✔️✔️25 to 30 times faster
, The absolute pressure expressed in terms of atmospheres absolute at 99 feet in salt
water - ✔️✔️4 ata
One atmosphere of pressure is defined as - ✔️✔️- 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? - ✔️✔️The
development of the demand regulator in 1943
The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea
water is - ✔️✔️2 ata
The Buoyancy Control System components are: - ✔️✔️buoyancy compensator,
inflation device, and weight belt
A scuba cylinder must be hydrostatically tested: - ✔️✔️Within fixed interval set by local
law
the SSI Equipment Service Program is designed to: - ✔️✔️Keep all the components of
the Total Diving System to Optimal Performance
what affects a diver's air consumption rate? - ✔️✔️-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 - ✔️✔️convection
Which of the following Total Diving System subsystems best describes the SCUBA
unit? - ✔️✔️The Delivery Sytem
The Information System components are: - ✔️✔️Dive computer, Analogue instruments,
and SSI total dive log
A high pressure scuba cylinder should be stored: - ✔️✔️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. - ✔️✔️30
three primary features to look for in a qualtiy Exposure System are: - ✔️✔️thickness,
fit, and seam integrity
