Revision Questions - Set 9

Question Title

* 1. The most accurate way of measuring distance underwater (in the absence of a measuring device) is:

Kick cycles

Arm spans

Timed swim

Air consumption

Question Title

* 2. If a tank is filled to 200 bar at a temperature of 40̊C, what is the tank pressure if it is cooled to a temperature of 20̊C?

200 bar

212 bar

190 bar

188 bar

Question Title

* 3. The correct procedure for performing a Controlled Emergency Swimming Ascent (CESA) include:

Remove weight belt and swim to the surface while exhaling, attempting to control the ascent rate and making a continuous sound

With all equipment in place, look up, reach up, prepare to vent excess air from the BCD and swim at a normal pace to the surface while making a continuous ahhh sound

Signal buddy, locate his alternate air source and make a controlled ascent to the surface

Swim quickly to the surface while making an ahhhh sound

Question Title

* 4. During a deep dive, you notice a diver is behaving foolishly. The best way to assist the diver is to:

Take him up to a shallower depth

Take him to a deeper depth

Tell him to breathe deeply and slowly

Tell him to monitor his air supply and swim horizontally until he feels better

Question Title

* 5. Generally it is recommended that you use a lift bag to recover an object that has more negative buoyancy than

Approx. 10-20 kg

Approx. 20-30 kg

Approx. 4-7 kg

Approx. 2-3 kg

Question Title

* 6. How do you determine correct weighting at the surface?

The diver holds a deep breath, empties his BCD and sinks

The diver holds a normal breath, empties his BCD and floats at eye level

The diver holds a deep breath, empties his BCD and floats at eye level

The diver holds a normal breath, empties his BCD and floats at chin level

Question Title

* 7. Waves are mostly caused by:

The relative position of the earth, moon & sun

Major ocean currents

Land masse

Wind

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* 8. To avoid being without a light on a night dive, it is recommended that each night diver carry:

One sturdy primary light

One primary light, one back up light and have an attached chemical marker light

Two primary lights, two back up lights and have two attached chemical marker lights

One primary light and a back up to share with your buddy

Question Title

* 9. When diving at altitude, although the percentage of gases within the atmosphere remains the same, the _ of the gases will _

Partial pressure / increase

Density / remain the same

Density / increase

Partial pressure / decrease

Revision Questions - Set 9

Question Title

* 1. The most accurate way of measuring distance underwater (in the absence of a measuring device) is:

Question Title

* 2. If a tank is filled to 200 bar at a temperature of 40̊C, what is the tank pressure if it is cooled to a temperature of 20̊C?

Question Title

* 3. The correct procedure for performing a Controlled Emergency Swimming Ascent (CESA) include:

Question Title

* 4. During a deep dive, you notice a diver is behaving foolishly. The best way to assist the diver is to:

Question Title

* 5. Generally it is recommended that you use a lift bag to recover an object that has more negative buoyancy than

Question Title

* 6. How do you determine correct weighting at the surface?

Question Title

* 7. Waves are mostly caused by:

Question Title

* 8. To avoid being without a light on a night dive, it is recommended that each night diver carry:

Question Title

* 9. When diving at altitude, although the percentage of gases within the atmosphere remains the same, the _____ of the gases will _____

Question Title

* 10. ﻿Name

* 9. When diving at altitude, although the percentage of gases within the atmosphere remains the same, the _ of the gases will _

* 10. Name