Scuba Diving Scuba Diving Equipment

Question 1

What does the acronym BCD stand for in scuba diving?

Accepted Answer

Buoyancy Control Device

Answer

BCD stands for Buoyancy Control Device, the inflatable vest worn by divers to control their buoyancy underwater.

Question 2

What is the primary function of a regulator in scuba diving?

Accepted Answer

Reduce tank pressure to breathable levels

Answer

A regulator reduces the high-pressure air in the tank to ambient pressure so the diver can breathe it safely.

Question 3

Which gauge tells a scuba diver how much air remains in their tank?

Accepted Answer

Submersible Pressure Gauge (SPG)

Answer

The Submersible Pressure Gauge (SPG) measures the air pressure remaining in the scuba tank.

Question 4

What is the recommended minimum tank pressure at which a diver should begin their ascent?

Accepted Answer

500 PSI (35 bar)

Answer

500 PSI (35 bar) is the widely taught minimum reserve pressure that signals a diver should end the dive and ascend.

Question 5

What material are most modern scuba tanks made from?

Accepted Answer

Aluminum or steel

Answer

Most scuba tanks are made from aluminum or steel, each offering different buoyancy and weight characteristics.

Scuba Diving Practice Test