#1
What is the most important rule to follow when ascending during a scuba dive?
Rise slowly, with frequent stops to equalize
ExplanationAscend gradually, pausing regularly to equalize pressure.
#2
Which piece of scuba equipment is essential for maintaining buoyancy?
BCD (Buoyancy Control Device)
ExplanationBCD is crucial for controlling underwater buoyancy levels.
#3
What does the 'B' stand for in the acronym 'BCD' in scuba diving?
Buoyancy
ExplanationThe 'B' in BCD stands for Buoyancy in scuba diving terminology.
#4
Which gas is commonly used in recreational scuba diving?
Nitrogen
ExplanationNitrogen is a common gas used in recreational scuba diving.
#5
What is the purpose of a dive buddy system?
To provide assistance and emergency support
ExplanationThe dive buddy system exists to provide assistance and emergency support during dives.
#6
What is the primary purpose of a dive plan?
To ensure safety and manage dive logistics
ExplanationA dive plan is designed to ensure safety and manage dive logistics effectively.
#7
What does the acronym 'SAC' stand for in scuba diving?
Surface Air Consumption
ExplanationSAC represents Surface Air Consumption in diving terminology.
#8
What is the first step in responding to a panicked diver?
Ensure your own safety first
ExplanationPrioritize personal safety when dealing with a panicked diver.
#9
What should a diver do if experiencing nitrogen narcosis symptoms?
Ascend to a shallower depth
ExplanationAscend to a shallower depth when experiencing nitrogen narcosis symptoms.
#10
What is the recommended depth for a safety stop?
5 meters (16 feet)
ExplanationThe recommended depth for a safety stop is 5 meters (16 feet).
#11
What should a diver do if experiencing a cramp during a dive?
Stop, signal to the buddy, and attempt to stretch out the affected muscle
ExplanationStop, signal to the buddy, and attempt to stretch out the affected muscle when experiencing a cramp.
#12
What should a diver do if experiencing symptoms of decompression sickness?
Surface immediately and seek medical attention
ExplanationSurface immediately and seek medical attention when experiencing symptoms of decompression sickness.
#13
What is the purpose of a surface marker buoy (SMB) in scuba diving?
To signal for help in case of an emergency
ExplanationAn SMB is used to signal for help in case of an emergency during scuba diving.
#14
What is the primary purpose of a safety stop during a scuba dive?
To allow for decompression
ExplanationSafety stops aid in decompression during a scuba dive.
#15
In case of an out-of-air emergency, what is the correct action for a diver to take?
Buddy breathing
ExplanationEngage in buddy breathing during an out-of-air emergency.
#16
What is the recommended time interval between diving and flying in an airplane?
12 hours
ExplanationWait 12 hours after diving before flying in an airplane.
#17
During a dive, a diver experiences equipment failure and is unable to resolve the issue underwater. What should the diver do?
Surface immediately, following proper procedures
ExplanationSurface immediately following proper procedures in case of equipment failure.
#18
Which of the following is NOT a sign of nitrogen narcosis?
Increased air consumption
ExplanationIncreased air consumption is NOT a sign of nitrogen narcosis.
#19
Which of the following is NOT a recommended precaution for avoiding decompression sickness?
Breathing compressed air before diving
ExplanationBreathing compressed air before diving is NOT a recommended precaution for avoiding decompression sickness.
#20
Which gas is typically used in enriched air nitrox (EANx) diving?
Oxygen
ExplanationOxygen is the gas typically used in enriched air nitrox (EANx) diving.