Scuba Diving Safety Diving 3

Question 1

A diver surfaces far from the boat in choppy water. What is the FIRST action they should take?

Accepted Answer

Establish positive buoyancy and signal for help

Answer

Establishing positive buoyancy (inflating BCD or dropping weights) is the first priority to ensure survival at the surface.

Question 2

Which type of decompression illness involves actual bubbles forming inside joint spaces and causing severe pain?

Accepted Answer

Type I DCS (musculoskeletal bends)

Answer

Type I DCS is characterized by joint pain and skin symptoms caused by nitrogen bubbles in tissues and joints.

Question 3

Oxygen toxicity during recreational scuba diving is best prevented by:

Accepted Answer

Staying within recreational depth limits (130 ft/40 m max)

Answer

Staying within recreational depth limits keeps the partial pressure of oxygen below the toxic threshold of 1.6 ATA.

Question 4

What is a 'panic spiral' in scuba diving?

Accepted Answer

A sequence where anxiety leads to poor decisions, worsening the situation

Answer

A panic spiral occurs when stress triggers rapid, poor decisions that escalate the problem, often leading to fatal outcomes.

Question 5

If a diver's dry suit inflator becomes stuck open, what is the correct response?

Accepted Answer

Disconnect the inflator hose and vent the suit manually

Answer

Disconnecting the inflator hose stops further gas flow, and the diver can vent the suit through the exhaust valve.

Scuba Diving Practice Test