SSI ASSISTANT INSTRUCTOR PRETEST EXAM WITH
COMPLETE 200 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+|
BRAND NEW VERSION!
For every meter of depth in freshwater, pressure changes by:
0.013 bar
0.098 bar
0.100 bar
1.03 bar - CORRECT ANSWERS-0.098 bar
diver and his / her equipment weigh 87 kg when neutrally buoyant in saltwater. To be neutrally buoyant
for freshwater diving with the same equipment, he /she has to:
Add weight
All answers are correct
Use the same weight
Remove weight - CORRECT ANSWERS-Remove weight
If 2 liters of air are needed in your buoyancy compensator to maintain neutral buoyancy at 10m in the
ocean, what will happen to your buoyancy if you ascend 3 m without deflating:
Your positive buoyancy will increase
There will be no change in buoyancy
Your negative buoyancy will increase
You will stay neutral no matter if you ascend or descend - CORRECT ANSWERS-Your positive
buoyancy will increase
Breathing gas consumption:
Varies inversely with depth
Increases as depth increases
Decreases as depth increases
,Remains the same as depth increases - CORRECT ANSWERS-Increases as depth increases
The ocean depth at which the partial pressure of oxygen in air equals 1.6 bar is _____ meters assuming
O2 = 21%.
70
85
66
55 - CORRECT ANSWERS-66
Assuming a maximum partial pressure limitation of 1.4 bar, the maximum MOD for a 40% nitrox mixture
in the ocean is:
35 meters
25 meters
40 meters
20 meters - CORRECT ANSWERS-25 meters
The absolute pressure at a depth of 50 meters in salt water is:
5.012 bar
6.000 bar
5.000 bar
5.901 bar - CORRECT ANSWERS-6.000 bar
What would be the surface air consumption rate (SAC) of a diver with a 200bar, 10 liter cylinder who
uses 50bar in 10 minutes at a depth of 10 meters in the ocean?
25 liters / minute
50 liters / minute
35 liters / minute
10 liters / minute - CORRECT ANSWERS-25 liters / minute
If you have difficulty equalizing pressure in your ears/sinuses while descending, you should:
, Ascend 2 meters and force equalization
Stop and wait until the discomfort subsides
Ascend until the pressure is relieved and then attempt equalization
Return to the surface and re-initiate the descent - CORRECT ANSWERS-Ascend until the
pressure is relieved and then attempt equalization
A lung rupture can occur with over-pressurization in water as shallow as:
5.0m
1.2m
3.5m
4.0m - CORRECT ANSWERS-1.2m
The recommended method to avoid sinus squeezes and reverse blocks is to:
Ascend and descend slowly to allow gradual equalization
Dive only when your sinuses are healthy and clear
Only use decongestants that do not produce side effects
Forcibly equalize the pressure in your sinuses every few meters - CORRECT ANSWERS-Dive
only when your sinuses are healthy and clear
The primary symptom of ear squeeze in its initial phase is:
Rapid, shallow, inefficient breathing
Joint and limb pain
A pressure that will progress to severe pain if equalization is not completed
A pulling sensation in the chest - CORRECT ANSWERS-A pressure that will progress to severe
pain if equalization is not completed
There are several lung overexpansion injuries that you should be aware of so that you can avoid them
while diving. These are:
Hypothermia, Hypoxia, Hyperoxia
Decompression Sickness, Arterial Gas Embolism and rupture of the Oval Window
COMPLETE 200 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+|
BRAND NEW VERSION!
For every meter of depth in freshwater, pressure changes by:
0.013 bar
0.098 bar
0.100 bar
1.03 bar - CORRECT ANSWERS-0.098 bar
diver and his / her equipment weigh 87 kg when neutrally buoyant in saltwater. To be neutrally buoyant
for freshwater diving with the same equipment, he /she has to:
Add weight
All answers are correct
Use the same weight
Remove weight - CORRECT ANSWERS-Remove weight
If 2 liters of air are needed in your buoyancy compensator to maintain neutral buoyancy at 10m in the
ocean, what will happen to your buoyancy if you ascend 3 m without deflating:
Your positive buoyancy will increase
There will be no change in buoyancy
Your negative buoyancy will increase
You will stay neutral no matter if you ascend or descend - CORRECT ANSWERS-Your positive
buoyancy will increase
Breathing gas consumption:
Varies inversely with depth
Increases as depth increases
Decreases as depth increases
,Remains the same as depth increases - CORRECT ANSWERS-Increases as depth increases
The ocean depth at which the partial pressure of oxygen in air equals 1.6 bar is _____ meters assuming
O2 = 21%.
70
85
66
55 - CORRECT ANSWERS-66
Assuming a maximum partial pressure limitation of 1.4 bar, the maximum MOD for a 40% nitrox mixture
in the ocean is:
35 meters
25 meters
40 meters
20 meters - CORRECT ANSWERS-25 meters
The absolute pressure at a depth of 50 meters in salt water is:
5.012 bar
6.000 bar
5.000 bar
5.901 bar - CORRECT ANSWERS-6.000 bar
What would be the surface air consumption rate (SAC) of a diver with a 200bar, 10 liter cylinder who
uses 50bar in 10 minutes at a depth of 10 meters in the ocean?
25 liters / minute
50 liters / minute
35 liters / minute
10 liters / minute - CORRECT ANSWERS-25 liters / minute
If you have difficulty equalizing pressure in your ears/sinuses while descending, you should:
, Ascend 2 meters and force equalization
Stop and wait until the discomfort subsides
Ascend until the pressure is relieved and then attempt equalization
Return to the surface and re-initiate the descent - CORRECT ANSWERS-Ascend until the
pressure is relieved and then attempt equalization
A lung rupture can occur with over-pressurization in water as shallow as:
5.0m
1.2m
3.5m
4.0m - CORRECT ANSWERS-1.2m
The recommended method to avoid sinus squeezes and reverse blocks is to:
Ascend and descend slowly to allow gradual equalization
Dive only when your sinuses are healthy and clear
Only use decongestants that do not produce side effects
Forcibly equalize the pressure in your sinuses every few meters - CORRECT ANSWERS-Dive
only when your sinuses are healthy and clear
The primary symptom of ear squeeze in its initial phase is:
Rapid, shallow, inefficient breathing
Joint and limb pain
A pressure that will progress to severe pain if equalization is not completed
A pulling sensation in the chest - CORRECT ANSWERS-A pressure that will progress to severe
pain if equalization is not completed
There are several lung overexpansion injuries that you should be aware of so that you can avoid them
while diving. These are:
Hypothermia, Hypoxia, Hyperoxia
Decompression Sickness, Arterial Gas Embolism and rupture of the Oval Window
