Scuba Diving Scuba Diving Equipment 3

Question 1

Why is it important to rinse scuba equipment with fresh water after a dive?

Accepted Answer

Remove salt, sand, and debris that cause corrosion

Answer

Recharge the compressed air

Answer

Recalibrate the depth gauge

Answer

Dry out the neoprene suit faster

Question 2

What is the function of the second stage in a two-stage scuba regulator system?

Accepted Answer

Deliver air at ambient pressure directly to the diver's mouth

Answer

Reduce tank pressure to an intermediate level

Answer

Inflate the BCD on demand

Answer

Measure air temperature

Question 3

What is an alternate air source (octopus) used for?

Accepted Answer

Provide air to an out-of-air dive buddy

Answer

Inflate a dry suit

Answer

Back up the depth gauge

Answer

Signal the surface for pickup

Question 4

How often must scuba tanks be hydrostatically tested in the US?

Accepted Answer

Every 5 years

Answer

Every year

Answer

Every 2 years

Answer

Every 10 years

Question 5

What type of buoyancy does a properly weighted diver have at the surface?

Accepted Answer

Slightly positive (floating at eye level with lungs full)

Answer

Perfectly neutral (completely submerged)

Answer

Slightly negative (sinking slowly)

Answer

Highly positive (floating high out of water)

Question 6

What is a delayed surface marker buoy (DSMB)?

Accepted Answer

A marker buoy deployed underwater before surfacing

Answer

A buoy left at the dive site while underwater

Answer

A float anchored to mark the entry point

Answer

A beacon activated only on the surface