SSI Open Water Final Exam

In air at 1 at a, the partial pressure of nitrogen is _____, oxygen is _____.

0.79 / 0.21 ata

The greatest relative pressure change in sea water takes place between _____ and _____ feet:

0/33

During normal diving activities, divers should never exceed an ascent rate of ______ feet per minute

30

The recommended max ascent rate is:

30 feet per minute

Salt water weighs ___ pounds per cubic foot and freshwater weighs ___ pounds per cubic foot.

64/62.5

Water comprises about ___ of the Earth's surface.

72%

The most efficient breathing pattern for scuba diving is:

A deep balanced inhalation followed by a long balanced exhalation without any pause between inhaling and exhaling

The first symptom of a sinus squeeze is usually:

A sharp pain or wedging sensation above the eyes

Gauge pressure is defined as:

Absolute pressure minus 1 ata

The condition in which certain colors are diminished at depth increases is called:

Absorption

A good diving buddy: A. is able to help in a phases of diving and dive planning B. Is as familiar with their buddy's diving equipment as they are with their own C. All answers are correct D. Makes diving more fun

All answers are correct

Causes of panic include: A. Certain environmental conditions B. Using equipment that is unfamiliar or does not fit well C. All answers re correct D. Diving outside a divers comfort ability

All answers are correct

Divers can help protect the marine environment by: A. Maintaining neutral buoyancy at all times B. Keep equipment secured and no dangling C. All answers are correct D. Always being a responsible diver

All answers are correct

Divers should avoid contact with all corals because: A. Contact can damage the coral B. All answers are correct C. Contact can be harmful to the diver D. Touching corals can damage your equipment

All answers are correct

If a diver is injured by harmful sea life, it is usually because of: A. The diver's negligence B. All answers are correct C. The diver's ignorance D. The diver's aggressive behavior

All answers are correct

Overexpansion injuries can be prevented by: A. All answers are correct B. Never holding your breath while diving C. Learning the correct breathing patterns reinforced in classroom, pool, and open water training D. Dive with a properly maintained high-quality Total Diving System

All answers are correct

Panic can be prevented by: A. Taking specialty training B. Honestly evaluating your diving limitations C. Properly maintaining your Total Diving System D. All answers are correct

All answers are correct

The SSI Responsible Diver Code states that you should: A. Dive within the limits of your training and ability B. All answers are correct C. Accept responsibility for your own well-being on every dive D. Be environmentally responsible on every dive

All answers are correct

The proper first aid for Arterial Gas Embolism, Subcutaneous Emphysema, Pneumothorax, and Mediastinal Emphysema is: A. Administer oxygen if qualified B. Watch vital signs, treat for shock and stand by to administer cardio-pulmonary resuscitation (if qualified) C. All answers are correct D. Seek proper medical aid (a recompression chamber) as quickly as possible

All answers are correct

The purpose of a BC is to: A. Control ascent and descent rates B. All answers are correct C. Provide surface flotation D. Maintain neutral buoyancy during the dive

All answers are correct

Use of the SSI Total DiveLog is important because: A. All answers are correct B. It keeps an accurate record of your personal information and dives C. It contains your medical history and provides important emergency information D. It is important information resource for future dives

All answers are correct

Which of the statements concerning sound transmission underwater is correct: A. Divers find it difficult to locate the direction of a sound producing source B. All answers are correct C. Sound will travel farther underwater than in air D. Sound travels four times faster underwater than in air

All answers are correct

The term repetitive dive is defined as:

Any dive started more than 10 minutes after a previous scuba dive

The most serious lung over expansion injury is:

Arterial Gas Embolism

The three Basic Rules of Scuba stated in the proper order of importance are:

Breathe continuously, ascend slowly and maintain control, and never dive alone or beyond your level of training

The Buoyancy Control System components are:

Buoyancy compensator, inflation device, and weight belt or BC weight pockets

Underwater, the bending of light rays causes objects to appear to be:

Closer

To achieve the SSI Advanced Open Water Diver rating, a diver is required to:

Complete 4 Specialty Courses and log a total of 24 dives

The first thing you should do if you observe signs of panic in a diver at the surface is:

Completely fill your BC and instruct the panicked diver to establish positive buoyancy

Coral reefs are formed by:

Coral animals called polyps that form skeletal structures

An object immersed in water will be buoyed upward by a force __________ the weight of the water it displaces.

Equal to

Under the SSI Equipment Service Program, your Delivery System should be serviced and performance checked:

Every year

The most important rule when assisting a panicked diver is:

Never needlessly endanger yourself

Sinus squeeze can be prevented by:

Not diving with a cold

The best prevention for decompression sickness is to:

Plan your dive and dive your plan

To use a compass to navigate to a sighted object:

Point the compass toward the object, rotate the bezel until the witness marks are over the magnetic needle, and follow the lubber line

A scuba tank for recreational diving should be filled with:

Pure, filtered compressed air or Nitrox.

Diving at altitude or flying after diving:

Requires special diving computer functions, altitude tables and/or refraining from flying for at least 24 hours after the completion of a dive

When diving in Marine Protected Areas like Marine Parks, divers should:

Respect and follow the local Marine Park regulations

Ear squeeze can be prevented by:

Rotating the jaw, swallowing or Valsalva

If you lose contact with your buddy, you should:

Search for no more than minute by turning 360 degrees and looking up and down and then perform a normal ascent to the surface

A dive computer keeps track of a diver's nitrogen absorption levels so that the diver can:

Stay within the no-decompression limits on each dive

If you experience pain in your ears during descent:

Stop the descent and ascend until the pain stops

In an out-of-air emergency, if your buddy is close enough, you should:

Swim to your buddy, give the out-of-air signal, and share air

Which of the following would be inappropriate treatment for a diver exhibiting symptoms of Decompression Sickness?

Taking the victim back underwater

Residual nitrogen is defined as:

The amount of excessive nitrogen dissolved in our blood stream and tissues after a dive

The term Surface Interval is defined as:

The amount of time a diver stays out of the water or on the surface between dives.

The term No-Decompression Limit is defined as:

The maximum allowed time at depth without having to perform a mandatory decompression stop during the ascent

Absolute pressure is defined as:

The total pressure exerted on an object

Signs of a panicked diver are:

Wide-eyed, fearful look and a fast and erratic breathing pattern.