Scuba Knowledge

What is the purpose of a buoyancy compensator device (BCD) in scuba diving?

• To provide oxygen to the diver underwater.

• To increase the weight of the diver.

• To protect the diver from underwater hazards.

• To control buoyancy and maintain neutral buoyancy underwater.

Why is it important to perform a pre-dive safety check before scuba diving?

• To show off to other divers

• To waste time before diving

• To ensure equipment functionality and identify potential issues or hazards.

• To increase the risk of accidents

What is the maximum depth limit for recreational scuba diving?

• 40 meters (130 feet)

• 20 meters (65 feet)

• 30 meters (98 feet)

• 50 meters (164 feet)

What is the deepest will we be going today?

• 4ft

• 10 ft

• 12 ft

• 15 ft

• 20ft

How does nitrogen narcosis affect divers at greater depths?

• Nitrogen narcosis causes symptoms similar to alcohol intoxication and can lead to impaired judgment, confusion, and loss of coordination.

• Nitrogen narcosis has no effect on divers at greater depths.

• Nitrogen narcosis improves divers' judgment and coordination at greater depths.

• Nitrogen narcosis causes symptoms similar to oxygen toxicity at greater depths.

What is the purpose of a dive computer in scuba diving?

• The purpose of a dive computer in scuba diving is to track and display important information for safe dives.

• The purpose of a dive computer in scuba diving is to provide entertainment during dives.

• The purpose of a dive computer in scuba diving is to take underwater photographs.

• The purpose of a dive computer in scuba diving is to measure the water temperature.

What should measurements should a diver check every few moments during the dive?

• The depth

• The amount of air left in the tank.

• How long the diver has been under water

• the temperature

• how many fish they saw

What is the PADI recommended ascent rate for scuba divers?

• 5 meters (16 feet) per minute

• 9 meters (30 feet) per minute

• 20 meters (65 feet) per minute

• 15 meters (50 feet) per minute

Answer explanation

The Navy's standard is 10m or 33 ft/sec. It is more conservative and safer.

Definitely slower than your bubbles!!!

What is the purpose of a dive flag or buoy in scuba diving?

• To attract marine life for better underwater photography.

• To mark the location of underwater treasure.

• To provide a resting spot for tired divers.

• To indicate the presence of divers underwater to boats and other watercraft.

Which of these are the recognized dive flags(2)?

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