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A comprehensive set of questions and answers related to ssi scuba open water diving certification. It covers various aspects of diving safety, equipment, procedures, and environmental considerations. Designed to help individuals prepare for their certification exam and gain a deeper understanding of scuba diving principles.
Typology: Exams
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If a flexible air-filled container at 100 feet of sea water has a volume of 10 cu ft, what would be the volume if it were transported to the surface? - ✔️ ✔️ 40 cu ft
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
If you experience pain in your ears during descent: - ✔️ ✔️ Stop the descent and ascend until the pain stops
If you lose contact with your buddy, you should: - ✔️ ✔️ Search for no more than a minute by turning 360 degrees and looking up and down and then perform a normal ascent to the surface
In a deep water out of air emergency, and your buddy is not close enough, the best response to this emergency is to perform a Controlled Swimming Ascent - ✔️ ✔️ false
assuming a constant air consumption rate, diving at a pressure of 4 ata will use __ as much air as diving at 2 ata - ✔️ ✔️ 2 times
Body heat is lost ________ than in air - ✔️ ✔️ 25 to 30 times faster
Causes of panic include - ✔️ ✔️ -diving outside of a comfort zone
Coral reefs are formed by: - ✔️ ✔️ coral animals called polyps that form skeletal structures
Decompression sickness occurs when: - ✔️ ✔️ -A diver stays at depth for too long or surfaces too quickly
Describing diving with the acronym SCUBA came from what event? - ✔️ ✔️ The development of the demand regulator in 1943
Dive computers are essential for planning and executing dives because they - ✔️ ✔️ - help divers stay within no-decompression limits
Divers can help protect the marine environment by: - ✔️ ✔️ -swim neutrally buoyant at all times.
Divers should avoid contact with corals because: - ✔️ ✔️ -touching coral can damage equipment
Diving at altitude or flying after diving: - ✔️ ✔️ Requires special diving computer functions, altitude tables and/or refraining from flying from at least 24 hours after the completion of a dive
During normal diving activities, divers should never exceed an ascent rate of ________ feet per minute. - ✔️ ✔️ 30
Ear squeeze can be prevented by: - ✔️ ✔️ - Relaxing
Earplugs... - ✔️ ✔️ should never been worn while diving
Examples of freshwater marine life include: - ✔️ ✔️ -bass
A dependent action to take in response to an out of air emergency is: - ✔️ ✔️ Sharing air using the primary second stage and using the alternate air source for yourself
a good diving buddy - ✔️ ✔️ - makes diving more fun
A high pressure scuba cylinder should be stored: - ✔️ ✔️ secured and with a minimum of 500 to 750 psi
A scuba cylinder must be hydrostatically tested: - ✔️ ✔️ Within fixed interval set by local law
a scuba tank for recreational diving should be filled with - ✔️ ✔️ pure, filtered compressed air or Nitrox
Gas can enter the bloodstream and cause serious damage to the lungs or even death by: - ✔️ ✔️ -holding your breath while diving
Gauge pressure is defined as: - ✔️ ✔️ Absolute pressure minus one
Haldanes theory that the human body can withstand a 2:1 pressure difference was revised by D Workman to a nitrogen ratio of: - ✔️ ✔️ 1.58:
If a diver is injured by harmful sea life it is often because: - ✔️ ✔️ -the diver's aggressive behavior
In air at 1 ata, the partial pressure of nitrogen is___, oxygen is_____. - ✔️ ✔️ 0.79/0. ata
In an out-of-air emergency, your buddy is close enough, you should: - ✔️ ✔️ swim to your buddy, give the out-of-air signal, and share air
It is OK to share a computer with your dive buddy (T/F) - ✔️ ✔️ false
More than ___ of Earth's oxygen is produced by marine plants. - ✔️ ✔️ 85%
One atmosphere of pressure is defined as - ✔️ ✔️ - Each 34 feet of depth in freshwater
One of the primary factors contribution to heat loss for divers is - ✔️ ✔️ convection
Other symptoms of decompression sickness include: - ✔️ ✔️ -paralysis and loss of manual dexterity
Over expansion injuries can be prevented by: - ✔️ ✔️ -Learning correct breathing patterns
Panic can be prevented by: - ✔️ ✔️ -Properly maintaining your Total Diving System
repetitive dive- - ✔️ ✔️ any dive started more than 10 min. and less than 12 hours after a previous scuba dive
Residual nitrogen is defined as: - ✔️ ✔️ Residual nitrogen is the amount of excessive nitrogen dissolved in our bloodstream and tissues after a dive and all previous dives in a series
Rip currents are formed by: - ✔️ ✔️ water breaks over sand bars and reefs near the beach and recedes through channels or cuts in the bars and reefs
Signs of a panicked diver are - ✔️ ✔️ wide-eyed, fearful look and a fast erratic breathing pattern
Sinus squeeze can be prevented by - ✔️ ✔️ Not diving with a cold
Surface Interval - ✔️ ✔️ The amount of time the diver stays out of the water or on the surface between dives
The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water is - ✔️ ✔️ 2 ata
The absolute pressure expressed in terms of atmospheres absolute at 99 feet in salt water - ✔️ ✔️ 4 ata
The best prevention for decompression sickness is to: - ✔️ ✔️ Plan your dive and dive your plan
The Buoyancy Control System components are: - ✔️ ✔️ buoyancy compensator, inflation device, and weight belt
The condition in which certain colors are diminished as depth increases is called: - ✔️ ✔️ Absorption
The first thing you should do if you observe sign of panic in a diver at the surface - ✔️ ✔️ Completely fill your BC and instruct the panicked to establish positive buoyancy
The first thing you should do if you observe signs of panic in a diver underwater is - ✔️ ✔️ locate your alternate air source in case it is needed
The greatest relative pressure change in sea water takes place between ___ and ___ feet - ✔️ ✔️ 0 and 33
The Information System components are: - ✔️ ✔️ Dive computer, Analogue instruments, and SSI total dive log
The most common symptom of decompression sickness is: - ✔️ ✔️ Joint pain
The most important reason for planning your dives and executing the dive per your plan is to: - ✔️ ✔️ prevent accidents
The most important rule when assisting a panicked diver is - ✔️ ✔️ never needlessly endanger yourself
The most serious lung overexpansion injury is: - ✔️ ✔️ Aretrial Gas Embolism
The ocean is an important source of life because: - ✔️ ✔️ it is home to many of the first links in earth's food chain
The only accepted treatment for Arterial Gas Embolism is: - ✔️ ✔️ stabilize victim in nearest medical facility and transport to decompression
The proper first aid for Arterial Gas Embolism, subcutaneous emphysema, pneumothorax, and mediastinal emphysema is: - ✔️ ✔️ -watch vital signs
The purpose of a BC is to: - ✔️ ✔️ Control ascent and descent rates, maintain neutral buoyancy during the dive, provide surface flotation
The purpose of equalization is to - ✔️ ✔️ Introduce additional air into body air spaces in response to increasing external pressure
The rate at which the body becomes saturated with nitrogen: - ✔️ ✔️ will vary based on blood flow to the body
The recommended max ascent rate is: - ✔️ ✔️ 30 feet per minute
the SSI Equipment Service Program is designed to: - ✔️ ✔️ Keep all the components of the Total Diving System to Optimal Performance
The SSI responsibile diver code states that you should - ✔️ ✔️ -accept resonsibility for you rown well-being on every dive
The term gradient can be described as: - ✔️ ✔️ The difference between the internal partial pressure and the external partial pressure of a gas.
The term No-decompression Limit is defined as: - ✔️ ✔️ The maximum depth without having to perform a mandatory decompression stop during the ascent
The transfer of oxygen and nitrogen into the bloodstream occurs through the walls of the: - ✔️ ✔️ Alveoli
three primary features to look for in a qualtiy Exposure System are: - ✔️ ✔️ thickness, fit, and seam integrity
To achieve the SSI Advanced Open Water Diver rating, a diver is required to - ✔️ ✔️ complete 4 specialty courses and 24 additional dives
To achieve the SSI Master Diver rating, a diver is required to: - ✔️ ✔️ Be certified as and SSI advanced open water diver, complete the SSi stress and rescue specialty course, and log a total of 50 dives
To achieve the SSI Specialty DIver rating, a diver is required - ✔️ ✔️ 2 specialty courses and 12 dives total
To use a compass to navigate to a sighted object - ✔️ ✔️ -Point compass toward object
Two examples of hard corals are: - ✔️ ✔️ Elkhorn & Staghorn
Two examples of soft corals are - ✔️ ✔️ black and red coral
Underwater, the bending of light rays causes objects to appear to be: - ✔️ ✔️ closer
Use of the SSI Total DiveLog is important because: - ✔️ ✔️ - It is a good resource for future dives
what affects a diver's air consumption rate? - ✔️ ✔️ -poor physical conditioning
When diving in Marine Protected Areas, divers should: - ✔️ ✔️ Respect and follow local Marine Park regulations
Which of the following Total Diving System subsystems best describes the SCUBA unit? - ✔️ ✔️ The Delivery Sytem
Which of the following would be inappropriate treatment for a diver exhibiting symptoms of Decompression Sickness? - ✔️ ✔️ taking the victim back underwater
Which of the statements concerning sound transmission underwater is correct? - ✔️ ✔️ - Divers find it difficult to locate the direction of a sound producing source
You should perform a safety stop at 15 feet for 3 to 5 minutes on every dive - ✔️ ✔️ true
your Delivery system should be serviced and preformance checked: - ✔️ ✔️ every year
When entering the water through the surf, dive buddy teams should - ✔️ ✔️ Maintain physical contact and time entry to coincide with the lull between wave sets
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? - ✔️ ✔️ Subcutaneous emphysema
Which of the following steps should be taken in the selection of a dive site: - ✔️ ✔️ - honest evaluation of your diving abilities and conditioning levels, as well as those of your buddy