Open Water Test

Question 1

Water is ____x more dense than air.

Answer 1

800

Question 2

Light travels ____ in water.

Answer 2

Slower

Question 3

‘1 Atmosphere’ is roughly ____ psi.

Answer 3

14.7

Question 4

Every ____ you descend into water, you add 1 Atmosphere of pressure.

Answer 4

33.

Question 5

A cubic foot of seawater weighs about ____ lbs.

Answer 5

64

Question 6

Sound travels ____ times as fast in water.

Answer 6

4x

Question 7

The clarity of water is referred to as ____. It can be dirt, plankton, or salt.

Answer 7

Turbidity.

Question 8

When submerged you are always doing one of these 3 things.

Answer 8

Floating, Sinking, or being neutral with the water.

Question 9

Because of pressure, your wetsuit becomes neutrally buoyant at about ____ ft.

Answer 9

20ft

Question 10

Visibly, objects in water appear ____ and ____.

Answer 10

Larger and closer

Question 11

When going from freshwater to salt water, you should usually ____ weight.

Answer 11

Add.

Question 12

Normal air is about __% Nitrogen and __% Oxygen and other gases.

Answer 12

79,21.

Question 13

Nitrox is ____ enriched air, and allows you to dive ____.

Answer 13

Oxygen, Longer (NOT DEEPER)

Question 14

The warmer a scuba tank is, the ____ the pressure will be inside the tank.

Answer 14

More.

Question 15

What does ‘AGE’ stand for?

Answer 15

Arterial Gas Embolism

Question 16

‘Martini’s Law’ is technically known as ____

Answer 16

Nitrogen Narcosis

Question 17

Your Ascent Rate should be less than ____ fpm.

Answer 17

<30 feet per minute

Question 18

Should you ascend faster than your bubbles?

Answer 18

NO!

Question 19

Most safety stops for shallow dives are done around ____ ft and for about __ minutes.

Answer 19

15-25 ft, 3 min

Question 20

SCUBA tanks have to be ____ tested every ____ years per the DOT.

Answer 20

Hydrostatically, 5 years.

Question 21

What causes ‘Shallow Water Blackout’?

Answer 21

Excessive Hyperventilation

Question 22

Air with less than ____% O2 will not support life.

Answer 22

10%

Question 23

The heart works ___ to ___ times harder under water pressure.

Answer 23

1.3-1.5

Question 24

When using dive tables, make sure to round ____ for depth and time.

Answer 24

UP

Question 25

What does ‘No impact’ diving mean.

Answer 25

Diving to leave the location as if you were never there. Being just a spectator.

Question 26

What is a Thermocline?

Answer 26

The border between warmer and colder water.

Question 27

Strong, dangerous currents found near reefs and dropoffs are referred to as ____ currents.

Answer 27

Rip-currents.

Question 28

If trying to pass through a rip current, a diver should swim at a(n) ____ degree angle to the current.

Answer 28

90 degree

Question 29

Always start your dive into the current. Why?

Answer 29

So that when returning and tired you can ride the current back.

Question 30

Before getting on the boat entirely, what is a very important factor that should be considered about the boat itself?

Answer 30

How divers will be getting back into the boat. Check ladders, ropes, whatever.

Question 31

What should you do if you get tangled in kelp?

Answer 31

Stop, Relax, and move slow.