Beginner Scuba Certification Practice Test

These questions are part of the practice quiz. Start practicing

• What can cause air embolism, pneumothorax, and emphysemas while scuba diving?
• What condition do scuba divers commonly experience due to breathing dry air?
• What might you treat for if a victim is suspected of having a mediastinal emphysema?
• What is the reason objects underwater appear larger and closer?
• What should you do first when giving first aid for diving accidents?
• Which pressure-related injury involves leakage of air into the mediastinal space?
• What should be ensured regarding the fit of diving equipment?
• What is the underwater movement of water caused by wave action called?
• In treating an air embolism, what should be administered alongside treating for shock?
• To manage hypothermia while diving, a diver should prioritize which of the following?
• Which component of the diving system reduces tank pressure?
• What type of fins is generally preferred by scuba divers?
• It is advisable that a sport diver _____ decompression dives.
• What best describes a pneumothorax?
• What condition occurs when air is trapped around the heart?
• What is essential for maintaining scuba tanks to ensure safety during dives?
• What are the two primary materials that scuba tanks are made from?
• What is the primary method through which a diver loses body heat?
• Which action is NOT part of the recommended first aid steps for diving accidents?
• What is the first aid treatment for stings from jellyfish?
• It is recommended that a dive team diving from an anchored boat have a trail line _____ long with a buoy at the end.
• When descending underwater, which part of the body should go down first to maintain orientation?
• What primarily causes most surface waves in water?
• What is the first step in the primary treatment for an air embolism?
• What is a recommended action for a victim of pneumothorax before medical help arrives?
• What is the purpose of bending the toe of the fin towards the knee?
• Which maintenance check is crucial for ensuring a scuba regulator's functionality?
• What is the term for an air bubble lodged in an artery?
• A pneumothorax is generally best described as what?
• Which condition is characterized by air trapped around the heart?
• What condition can result from continued loss of body heat in cold water?
• What type of suits are specifically designed to retain body heat while diving?
• What is an appropriate action if a victim of subcutaneous emphysema shows signs of shock?
• What is the role of the first stage of a regulator in scuba diving?
• When selecting a face mask for scuba diving, what are the two most essential factors to consider?
• Which condition related to scuba diving should also be included in first aid measures for an unconscious diver?
• To prevent air embolism, a diver should breathe _______ at all times during ascent.
• A scuba tank's stamped markings typically identify which of the following?
• How much faster does sound travel in water compared to air?
• If a diver's surface air consumption rate is 25 psi per minute, what would be the consumption rate at 66 feet of seawater?
• What can an irregular breathing pattern (skip breathing) while diving potentially cause excess of?
• Which of the following is a common first aid response for unconscious divers?
• Which natural navigation aid is used by divers to understand their position in the water?
• What effect does refraction have on objects underwater when viewed through a mask?
• What occurs when a diver ascends without equalizing ear pressure?
• The ascent rate of _____ for diving is acceptable when using the NAUI dive tables.
• What is one of the four main actions to consider for first aid in diving accidents?
• How should a diver breathe while recovering from panic?
• Why is heat retention important during scuba dives?
• What is the total atmospheric pressure at sea level typically expressed as?
• Which of the following is NOT a primary consideration when choosing snorkeling equipment?
• What might indicate treatment for an air embolism during an incident?
• What is the pressure within scuba tanks designed to prevent?
• When treating for shock, how should the victim be positioned?
• What should be done first when dealing with a stinging injury from an aquatic animal?
• What is a primary symptom of subcutaneous emphysema?
• Who can most readily provide assistance to a diver in need?
• Air trapped under the skin is referred to as what?
• What is a common symptom of mediastinal emphysema?
• Most injuries from aquatic life result from which type of animal action?
• When diving, what happens to a bubble of air as it rises toward the surface?
• Effective equalization of the ears is best achieved when descending how?
• What is the approximate equivalent depth in freshwater for one atmosphere of pressure?
• What is a common symptom of carbon monoxide poisoning?
• What describes the predictable rise and fall of ocean water at a specific location?
• What happens to a diver's body when exposed to colder water compared to air?
• In treating pneumothorax, what action is taken to relieve the trapped air?
• What term describes the point of sudden change in water temperature while diving?
• How often must scuba tanks be hydrostatically tested according to regulations?
• Which of the following describes air trapped under the skin, usually around the neck?
• For optimum no-decompression bottom times, plan repetitive dives so that each successive dive is to a _____ depth.
• According to the NAUI dive tables, depths of less than 40 feet are considered as _____ dives.
• A mediastinal emphysema refers to air trapped around which organ?
• Which of the following can make you unable to sustain efforts in recreational diving?
• What is another factor that can impact your ability to dive safely?
• What symptom might also be noticed in the mouth of someone suffering from an air embolism?
• First aid measures for an unconscious scuba diver should always consider _______ and air embolism.
• When administering basic life support, what is a vital step?
• A diver with a group letter of 'F' making a dive of 60 ft has a residual nitrogen time of _____
• At a depth of 53 feet in the ocean, what is the absolute pressure in atmospheres?
• Which gas law is best associated with medical problems encountered while diving, such as ear and sinus squeeze?
• What should a diver experiencing panic do to help themselves recover?
• What happens to the pressure in the middle ear as a diver ascends?
• Which part of the body is associated with equalizing pressure in the middle ear?
• Why is rinsing diving equipment after use important?
• Which of the following is the best definition of decompression sickness?
• What is the recommended position of the dust cap when rinsing a regulator?
• To prevent seasickness, where should you settle yourself on the boat?
• What is crucial to do when performing first aid after a diving accident?
• Pressure-related injuries are caused primarily by breathing on _______.
• Where is subcutaneous emphysema most commonly found?
• An air embolism is best described as what?
• What condition is described as air trapped around the heart?
• What is a common danger that can arise when a diver is fatigued?
• How many feet in seawater is equivalent to one atmosphere in the ocean?
• What type of currents appear and disappear suddenly?
• Which symptom indicates difficulty in breathing during emphysema?
• What can happen if scuba tanks are not properly maintained and tested?
• A diver on the surface waving his or her hand overhead and thrashing violently indicates _____
• According to NAUI, a repetitive dive is defined as more than one dive within a period of _____.
• When planning and executing a dive, it is important for diving buddies to agree on a dive. True or False?
• What is an example of a feature divers observe that helps with navigation?
• How frequently should you have your scuba regulator serviced?
• How should diving knives be primarily viewed in terms of their purpose?
• What is the most important consideration when buying or renting diving equipment?
• What type of gas law describes the relationship observed in breathing while diving?
• What physical factor could hinder your diving capabilities due to its recent occurrence?
• How does the pressure change as you descend underwater?
• If you find yourself alone and out of air at 30 feet in open water, what is the preferred action?
• What is the main purpose of exposure suits during dives?
• How much does sea water weigh per cubic foot?
• Subcutaneous emphysema is defined as air trapped under which part of the body?
• What condition might cause shoulder pain an hour after diving?
• What does the atmospheric pressure at sea level equal?
• What condition occurs when air enters the bloodstream during a dive?
• What condition describes a collapse of lung tissue?
• How should diving equipment be maintained after use?
• What essential maintenance should be performed on scuba tanks?
• What should you evaluate as a primary step before diving?
• A diver's inability to equalize their ears during ascent might lead to what condition?
• Gauge pressure plus atmospheric pressure is known as what type of pressure?
• As body heat is lost, divers may become insensible to what?
• Which method helps divers navigate using natural elements?
• When would you need to deliver 100% oxygen in a diving scenario?
• When the pressure of nitrogen is balanced between the air and your body, you are at a state of _____
• How many times more rapidly does a diver's body heat get lost through conduction compared to air?
• The minimum surface interval required to avoid stage decompression after a dive to 88 ft for 18 minutes, followed by a dive to 78 ft for 23 minutes is _____.
• What is the last thing to check before making a giant stride or any water entry?
• Continued loss of body heat will lead to which symptom that affects physical strength?
• The maximum time for a dive to 60 feet is _____ minutes.
• What is the recommended maximum length for a snorkel for optimal use in diving?
• Which of the following is a basic symptom of an air embolism?
• What is typically required for treating subcutaneous emphysema?
• When touching the skin of a person with subcutaneous emphysema, what can be felt?
• Which color is the first to be lost in the spectrum during a dive?
• When wearing an exposure suit, where should you add air to control buoyancy?
• When diving from an anchored boat, it is recommended that the dive team begin their dive _____ the prevailing current.
• The Eustachian tubes help to equalize pressure in which part of the body?
• Why is physical fitness important for scuba divers?
• Why are snorkels longer than 15 inches generally not recommended for diving?
• In addition to digging, what other functions does a dive knife serve?
• Which of the following best describes the relationship between pressure and volume of a gas?
• For maximum efficiency while diving, your breathing should be slightly _______ and _______ than normal.
• What should first aid measures for an unconscious scuba diver consider?
• Symptoms of nitrogen narcosis in divers can be likened to what?
• What is an important consideration to avoid during ascent to prevent serious diving-related injuries?
• What should be done with the regulator when rinsing it?
• What is the primary function of a dive knife?
• When should first aid for an unconscious diver be initiated?
• How can a diver relieve cramps in their calf?
• What does DAN stand for in the context of diving?
• Which maintenance task should be done at least once per year on scuba equipment?
• Which of the following is an example of a natural navigation aid divers use during diving?
• Which gas condition results from holding your breath while on compressed air?
• What causes pressure-related injuries such as air embolism and pneumothorax while diving?
• A diver should never _______ during ascent to avoid air embolism.
• What is one of the primary dangers of not maintaining scuba equipment?
• What is the best way to store diving equipment to ensure its longevity?
• Which of the following is not a method for measuring air pressure?
• If a diver starts to feel numbness in the limbs, what should they be concerned about?
• What is barometric pressure typically measured in?
• What happens to the volume of a gas in a sealed container when the pressure increases, according to Boyle's Law?
• Which of the following is NOT typically included in the stamped markings on a scuba tank?
• Why is it important for divers to be aware of the weight of sea water?
• Which skill is essential for handling emergencies during diving?
• Why do scuba divers become dehydrated while diving?
• Your first dive is to 60 ft for 50 minutes. After spending one hour and 40 minutes on the surface, what is your adjusted maximum dive time at 60 ft?
• What is an air bubble lodged in an artery known as?
• What protective gear is essential for maintaining body temperature underwater?
• What are two methods used for measuring air pressure?
• In cases of pneumothorax, where is the pain typically located?
• What aspect of a wetsuit leads to the need for a weighting system?
• Why should scuba tanks always maintain some pressure?
• What is the best course of action for a diver who has been stung by a jellyfish?
• What is the primary purpose of a weighting system used by divers?
• At what depth does a sealed balloon filled with air that has a volume of 6 cubic inches expand to 12 cubic inches?
• What is the most serious type of pressure-related injury in diving?
• What is the term used for the direction of travel line on the compass?
• The minimum surface interval recommended between two dives is _____
• Which of the following is NOT a physical factor affecting diving capabilities?
• How much does seawater weigh per cubic foot?
• Which of the following is NOT a symptom of hypothermia?
• Which navigation aid is NOT typically used by divers?
• What type of air do scuba divers often breathe that contributes to their dehydration?
• When treating a venomous fish wound, what should be done after cleaning the wound?