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SSI OPEN WATER EXAM PRACTICE 2025 QUESTIONS
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Earplugs A-Aid equalization of the middle of the ear B- Protect against cold C-Should never be worn while diving D-Protect ears from squeeze - correct answer - C The first symptom of a sinus squeeze is usually: A- a dull pain deep within the head B- a sharp pain at the base of the neck C- a crushing pain high in the chest D- a sharp pain above the eyes - correct answer - D One atmosphere of pressure is defined as: A-Each 34 ft of depth in freshwater B-Each 33 ft of depth in seawater C-1 ata D- all answers are correct - correct answer - D
If you experience pain in your ears during descent: A-Stop descent and ascend unitl pain stops B-Continue descent while gently exhaling into mask C-Place finger in ear canal and gently massage ear until pain ceases D-Abort dive - correct answer - A Underwater, the bending of light rays causes objects to appear to be: A-Same as surface B-Further away C-At an angle consistent with bend of light D-Closer - correct answer - D The condition in which certain colors are diminished as depth increases is called: A-Refraction B-Diffusion C-Turbidity D-Absorption - correct answer - D Describing diving with the acronym SCUBA came from what event? A-Development of the demand regulator in 1943 B- Development of air pumps in 19th century C-Invention of diving helmet in 1800
D-Dive Computer and SSI Total DiveLog - correct answer - B The SSI Equipment Service Program is designed to: A-Keep all the components of the Total Diving System to optimal performance B-Notify you when a hydrostatic test is due on your high pressure cylinder C-Protect the Delivery and Buoyancy Control System D-Protect the most important system components - correct answer - A The purpose of a BC is to: A-Control ascent and descent rates B-Provide surface floatation C-Maintain neutral buoyancy during the dive D-All answers are correct - correct answer - D Assuming a consistent air consumption rate, diving at a pressure of 4 ata will use __ as much air as diving at 2 ata. A-4 times B-2 times
C-8 times D-5 times - correct answer - B Which of the following Total Diving System subsystems best describes the SCUBA unit? A-The Information System B-The Buoyancy System C-The Delivery System D-The Snorkeling System - correct answer - C During normal diving activities, divers should never exceed an ascent rate of __ feet per minute. A- 30 B- 18 C- 20 D- 9 - correct answer - A A scuba cylinder must be hydrostatically tested: A-Within fixed intervals set by local law B-Never, no test is required C-After 100 dives D-A minimum of once a year Save - correct answer - A
D-Does not require any special considerations for the diver Save - correct answer - B The proper first aid for Arterial Gas embolism, Subcutaneous emphysema, Pneumothorax, and Mediastinal Emphysema is: A-Seek proper medical aid (a recompression chamber) as quickly as possible B-All answers are correct C_Watch Vital signs, treat for shock and stand by to administer cardio- pulmonary resuscitation (if qualified) C-Administer oxygen (if qualified) - correct answer - B Which of the following overexpansion injuries can be characterized by chest pain, breathing difficulties, weakness, and cyanosis (blueness) of the lips and nail beds: A-Mediastinal Emphysema and Pneumothorax B-Rupture of Eardrum C-Subcutaneous Emphysema D-Bends - correct answer - A
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? A-15 cu ft B-30 cu ft C-20 cu ft D-40 cu ft - correct answer - D Dalton's Law can be paraphrased as: A-The total pressure of the water surrounding a diver B-The percentage of nitrogen that causes decompression sickness C-The total pressure of a mixture of gases equals the sum of the partial pressures D-The pressure of the water plus 1 ata - correct answer - C The term gradient can be described as: A-Total tissue saturation B-The total pressure of all gases C-As always zero when the diver is super-saturated D-The difference between the internal partial pressure and the external partial pressure of a gas - correct answer - D Which of the following overexpansion injuries can be characterized by swelling in the neck area with a crackling sensation upon touching the swollen area?
Haldanes theory that the human body can withstand a 2:1 pressure difference was revised by D Workman to a nitrogen ratio of: A-3: B-5: C-1.58 : 1 D-1:1 - correct answer - C In air at 1 ata, the partial pressure of nitrogen is___, oxygen is_____. A-1.5/0.8 ata B-0.79/0.21 ata C-0.21/0.79 ata D-0.8/0.4 ata - correct answer - B Decompression sickness occurs when: A_A diver stays at depth too long and surfaces too quickly B-All answers are correct C-The nitrogen tissue tolerance gradient is exceeded D-Excess nitrogen bubbles out of solution into the blood and tissues - correct answer - B The term Surface Interval is defined as: A-The amount of nitrogen expelled while on the surface
B-The amount of time spent on the surface of the water between dives (excludes time out of the water) C-Travel time to and from the dive site D-The amount of time the diver stays out of the water or on the surface between dives - correct answer - D The reciprocal azimuth for an initial azimuth of 60º is: A-180° B-120° C-90° D-240° - correct answer - D Which of the following steps should be taken in the selection of a dive site: A-Honest evaluation of your diving abilities and conditioning levels, as well as those of your buddy B-Purpose of the dive C-Degree of difficulty presented by the site D-All answers are correct - correct answer - D To use a compass to navigate to a sighted object: A_Point the magnetic needle toward the object and swim B-Point the witness marks toward the object and swim
When entering the water through the surf, dive buddy teams should: A-Avoid physical contact B-Maintain physical contact and time entry to coincide with the lull between wave sets C- D-Enter the water one at a time - correct answer - B The term repetitive dive is defined as: A-Any dive started more than 10 minutes and less than 12 hours after a previous scuba dive B-Any dive started more than 10 minutes after a previous scuba dive C-A second or subsequent dive at the same location D-Any dive started less than 10 minutes after a previous scuba dive Save - correct answer - A Two examples of soft corals are: A-All answers are correct B-Elkhorn and Staghorn C-Black and Red Coral D-Sea Fan and Brain - correct answer - C The ocean is an important source of life because: A-It provides an endless supply of seafood
B-It covers so much of Earth's surface C-It provides humans with rain water to drink D-It is home to many of the first links in Earth's food chain - correct answer
- D Sharks respond aggressively to: A-The scent of blood in the water B-Divers descending and ascending C-Large fish around a diver D-Divers in the water - correct answer - A Divers should avoid contact with all corals because: A-Contact can be harmful to the diver B-All answers are correct C-Touching corals can damage your equipment D-Contact can damage the coral Save - correct answer - B Divers can help protect the marine environment by: A-All answers are correct B-Always being a responsible diver C-Maintaining neutral buoyancy at all times D-Keep equipment secured and no dangling - correct answer - A
Causes of panic include: A-Diving outside a diver's comfort and ability B-Certain environmental conditions C-All answers are correct D-Using equipment that is unfamiliar or does not fit well - correct answer - C The first thing you should do if you observe signs of panic in a diver underwater is: A-Locate your alternate air source in case it is needed B-Back off and assess the situation C-Surface and call for help D-Loosen your weight belt in case you need to drop it - correct answer - A To achieve the SSI Specialty Diver rating, a diver is required to: A-Complete any 2 Speciality courses AND Log a total of 12 dives B-Complete any 2 Specialty Courses C-Complete 1 Specialty Course and log 6 dives beyond Open Water D-Log a total of 15 dives - correct answer - A A dependent action to take in response to an out of air emergency is:
A-All answers are correct B-A Controlled Swimming Ascent B-Sharing air using the primary second stage and using the alternate air source for yourself D-An emergency Buoyant Ascent Save - correct answer - C In an out-of-air emergency, your buddy is close enough, you should: A-Perform a Controlled Swimming Ascent B-Swim to your buddy, give the out-of-air signal, and share air C-Perform an Emergency Buoyant Ascent D-All answers are correct - correct answer - B The SSI Responsible Diver Code states that you should: A-All answers are correct B-Be environmentally responsible on every dive C-Dive within the limits of your training and ability D-Accept responsibility for your own well-being on every dive - correct answer - A The first thing you should do if you observe signs of panic in a diver at the surface is: A-Call for help
