How to scuba dive safely
  • 1. What is the most important rule in scuba diving?
A) Never hold your breath
B) Always dive with a buddy
C) Check your gear
D) Have fun
  • 2. What is the purpose of a buoyancy compensator (BCD)?
A) To carry the tank
B) To control buoyancy
C) To see underwater
D) To provide air
  • 3. What does 'decompression sickness' result from?
A) Lack of oxygen
B) Shark bites
C) Carbon dioxide poisoning
D) Nitrogen bubbles forming in the body
  • 4. What is the primary function of a dive computer?
A) To track depth and time to prevent decompression sickness
B) To take underwater pictures
C) To communicate with the surface
D) To navigate underwater
  • 5. What should you do if you experience ear pain during descent?
A) Continue descending slowly
B) Stop and equalize
C) Plug your nose
D) Ignore the pain
  • 6. What is the recommended ascent rate?
A) 60 feet per minute
B) As fast as possible
C) 30 feet per minute
D) Immediately
  • 7. What is the function of a regulator?
A) To control buoyancy
B) To measure depth
C) To reduce tank pressure to a breathable level
D) To fill the tank
  • 8. What does 'buddy check' refer to?
A) Checking your buddy's gear before a dive
B) Sharing air with a buddy
C) Helping your buddy get certified
D) Swimming with a buddy
  • 9. What is the purpose of a dive flag?
A) To signal for help
B) To warn boats of divers in the area
C) To attract fish
D) To mark the dive site
  • 10. What causes 'nitrogen narcosis'?
A) Carbon dioxide poisoning
B) Decompression sickness
C) Increased partial pressure of nitrogen at depth
D) Lack of oxygen
  • 11. Which of these is NOT a sign of oxygen toxicity?
A) Euphoria
B) Visual disturbances
C) Convulsions
D) Twitching
  • 12. What is the minimum recommended surface interval after a single dive?
A) Two hours
B) 30 minutes
C) No surface interval needed
D) One hour
  • 13. What is the purpose of a wetsuit or drysuit?
A) To provide buoyancy
B) To provide air
C) To provide thermal protection
D) To increase speed
  • 14. What does the acronym 'SAC rate' stand for?
A) Scuba Air Capacity rate
B) Standard Air Check rate
C) Surface Air Consumption rate
D) Safe Ascent Calculation rate
  • 15. If you run low on air underwater, what should you do?
A) Hold your breath and swim to the surface
B) Panic
C) Signal your buddy and ascend safely
D) Continue the dive
  • 16. Which marine animal is LEAST likely to be aggressive towards divers?
A) Seahorse
B) Shark
C) Moray Eel
D) Barracuda
  • 17. What is the best way to avoid entanglement underwater?
A) Swim quickly
B) Ignore potential hazards
C) Dive alone
D) Maintain awareness of your surroundings
  • 18. What should you do if you encounter a strong current?
A) Fight against the current
B) Panic
C) Continue the dive as planned
D) Swim across the current to shore or a fixed object
  • 19. What is the purpose of a weight belt?
A) To help you swim faster
B) To carry tools
C) To provide warmth
D) To counteract buoyancy
  • 20. What is the minimum certification level usually required for wreck diving?
A) Divemaster
B) Advanced Open Water Diver
C) Rescue Diver
D) Open Water Diver
  • 21. What does 'equalization' refer to in diving?
A) Balancing your weight underwater
B) Balancing your air consumption
C) Balancing your buddy's gear
D) Balancing pressure in your ears and sinuses
  • 22. What is a common cause of dive accidents?
A) Shark attacks
B) Poor visibility
C) Panic
D) Equipment failure
  • 23. How often should you service your scuba regulator?
A) Annually
B) Only when it breaks
C) Every 5 years
D) Every 6 months
  • 24. What is the best way to protect coral reefs while diving?
A) Collect souvenirs
B) Feed the fish
C) Maintain neutral buoyancy
D) Touch the coral
  • 25. What is the most important factor in choosing a dive site?
A) Your experience level
B) Number of fish
C) Cost
D) Popularity
  • 26. What action should you take if you become entangled in fishing line underwater?
A) Pull sharply to break the line
B) Ignore it and continue diving
C) Use a cutting tool to free yourself carefully
D) Panic and swim quickly
  • 27. What is the primary benefit of using Nitrox (Enriched Air Nitrox) when scuba diving?
A) Extended no-decompression limits
B) Reduced air consumption
C) Improved visibility
D) Increased depth capabilities
  • 28. Why is it important to avoid diving when you have a cold or congestion?
A) It can make equalization difficult or impossible, causing barotrauma.
B) It increases your risk of shark attack
C) It makes you more susceptible to nitrogen narcosis
D) It makes it harder to breathe through your regulator
  • 29. What is the recommended procedure for deploying a surface marker buoy (SMB)?
A) Inflate at depth and release while holding the line.
B) Throw it as far as possible
C) Attach it to a marine animal
D) Release from the surface
  • 30. Before diving, what should you do with all jewelry?
A) Wrap it in a waterproof container
B) Tape it to your body
C) Remove all jewelry
D) Nothing, it's fine to wear
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