#1
What is the most important rule to follow when ascending during a scuba dive?
Keep breathing continuously
Rise slowly, with frequent stops to equalize
Surface as quickly as possible
Hold your breath to conserve air
#2
Which piece of scuba equipment is essential for maintaining buoyancy?
Regulator
Dive computer
BCD (Buoyancy Control Device)
Weight belt
#3
What does the 'B' stand for in the acronym 'BCD' in scuba diving?
Buoyancy
Breathing
Balancing
Breathing Control
#4
Which gas is commonly used in recreational scuba diving?
Oxygen
Carbon Dioxide
Hydrogen
Nitrogen
#5
What is the purpose of a dive buddy system?
To conserve air supply
To share dive equipment
To provide assistance and emergency support
To compete against each other in underwater games
#6
What is the primary purpose of a dive plan?
To record marine life sightings
To estimate dive duration
To locate dive sites
To ensure safety and manage dive logistics
#7
What does the acronym 'SAC' stand for in scuba diving?
Self-Contained Air Compression
Surface Air Consumption
Safety Awareness Code
Scuba Airflow Control
#8
What is the first step in responding to a panicked diver?
Signal for assistance from other divers
Remove the diver's weight belt
Establish positive buoyancy
Ensure your own safety first
#9
What should a diver do if experiencing nitrogen narcosis symptoms?
Descend to a shallower depth
Continue diving as planned
Ascend to a shallower depth
Increase breathing rate
#10
What is the recommended depth for a safety stop?
5 meters (16 feet)
10 meters (33 feet)
15 meters (49 feet)
20 meters (66 feet)
#11
What should a diver do if experiencing a cramp during a dive?
Ignore it and continue the dive
Signal for assistance and ascend slowly
Hold breath and swim rapidly to the surface
Stop, signal to the buddy, and attempt to stretch out the affected muscle
#12
What should a diver do if experiencing symptoms of decompression sickness?
Descend deeper to relieve pressure
Surface immediately and seek medical attention
Continue the dive but ascend slowly
Ignore the symptoms as they will go away on their own
#13
What is the purpose of a surface marker buoy (SMB) in scuba diving?
To mark the location of a shipwreck
To signal for help in case of an emergency
To indicate the presence of marine life
To alert boats to stay clear of divers below
#14
What is the primary purpose of a safety stop during a scuba dive?
To prevent nitrogen narcosis
To allow for decompression
To signal the end of the dive
To check equipment functionality
#15
In case of an out-of-air emergency, what is the correct action for a diver to take?
Buddy breathing
Ascend immediately
Remove weight belt
Call for help using an underwater signaling device
#16
What is the recommended time interval between diving and flying in an airplane?
6 hours
12 hours
18 hours
24 hours
#17
During a dive, a diver experiences equipment failure and is unable to resolve the issue underwater. What should the diver do?
Signal for assistance and ascend slowly
Hold breath and ascend rapidly
Ignore the problem and continue the dive
Surface immediately, following proper procedures
#18
Which of the following is NOT a sign of nitrogen narcosis?
Euphoria
Anxiety
Confusion
Increased air consumption
#19
Which of the following is NOT a recommended precaution for avoiding decompression sickness?
Performing a safety stop
Avoiding rapid ascents
Limiting dive time and depth
Breathing compressed air before diving
#20
Which gas is typically used in enriched air nitrox (EANx) diving?
Oxygen
Carbon dioxide
Helium
Nitrogen