Chapter 2

Question 1

A mask must

Answer 1

Fit well, afford good vision, and cover your nose to help equalize pressure in your ears

Question 2

Two factors that can affect the breathing ease of a snorkel

Answer 2

Height and diameter

Question 3

What fins can you dive in any temperature water with

Answer 3

Heel-strap

Question 4

If you use fins that are too large and stiff, it may cause

Answer 4

Leg cramps

Question 5

In the US, Scuba cylinders must be internally inspected

Answer 5

Once per year

Question 6

In the US, Scbua cylinders must be pressure tested

Answer 6

every 5 years

Question 7

What must you prevent from entering your scuba cylinder?

Answer 7

Water

Question 8

What way do you rotate a cylinder valve knob to turn it on?

Answer 8

Counterclockwise

Question 9

Scuba cylinders are equipped with this to keep overpressure from rupturing the cylinder

Answer 9

Over pressure relief/burst disk

Question 10

If you plan to dive in deep, wreck, or ice diving you want a

Answer 10

High-performance regulator

Question 11

The first stage of the regulator must have a high-pressure port so what can be connected to the regular first stage?

Answer 11

Submersible pressure guage

Question 12

When you rinse your regulator you need to be careful to not press this on the second stage

Answer 12

Purge button

Question 13

Contingency Scuba provides:

Answer 13

A totally independent regulator and air supply

Question 14

What can you read accurately down to about 12 meters/40 feet?

Answer 14

A capillary tube depth guage

Question 15

What is an important directional reference instrument?

Answer 15

A compass

Question 16

What provides a convenient way to consolidate your diving instruments?

Answer 16

A dive console

Question 17

A timing devise for diving must be able to measure

Answer 17

Depth underwater and time underwater

Question 18

Dive computers usually display maximum and current what? And remaining allowed what?

Answer 18

Depth and dive time

Question 19

The three general types of BCs are

Answer 19

Back flotation, jacket, and horse collar

Question 20

All BCs must be equipped with

Answer 20

An overpressure relief valve and an inflator/deflator hose

Question 21

You should rinse your BC

Answer 21

Internally and externally after use

Question 22

The most important feature of a weight belt is

Answer 22

Quick release

Question 23

A desirable feature of a weight belt is teh ability to

Answer 23

Compensate for the compression of your diving suit as you descend

Question 24

Two reasons some divers prefer soft weights over solid weights are

Answer 24

More comfortable and less damage if dropped

Question 25

Diving suits protect against

Answer 25

Heat loss, cuts, scrapes, and stings

Question 26

What is only sufficient for warm tropical diving?

Answer 26

Skin suits

Question 27

A neoprene wetsuit must

Answer 27

Fit precisely and snuggly

Question 28

You lose the greatest amount of body heat through

Answer 28

Head, hands, chest, armpits, and groin

Question 29

Clipping instruments to your BC prevents damage to

Answer 29

Themselves and the underwater environment

Question 30

A working tool every diver should have

Answer 30

Dive knife