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SDI chapter 4 exam questions with answers
[Show more]SDI chapter 4 exam questions with answers
[Show more]What does SCUBA stand for? 
Self 
Contained 
Underwater 
Breathing 
Apparatus 
 
 
 
List the three important scuba diving changes that occurred in the 1950s 
1) Dive tables published for repetitive dives 
2) Improved design/quality of scuba gear 
3) Dive computers commercially available 
 
 
 
Name...
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Add to cartWhat does SCUBA stand for? 
Self 
Contained 
Underwater 
Breathing 
Apparatus 
 
 
 
List the three important scuba diving changes that occurred in the 1950s 
1) Dive tables published for repetitive dives 
2) Improved design/quality of scuba gear 
3) Dive computers commercially available 
 
 
 
Name...
Objects under water appear: 
1: The same size as they do on land. 
2: Twice as large as they do on land. 
3: Closer and larger than they do on land. 
4: Smaller and farther away than they do on land. 
Closer and larger than they do on land. 
 
 
 
As you descend: 
1: Colors appear to fade. 
2: Reds ...
Preview 3 out of 21 pages
Add to cartObjects under water appear: 
1: The same size as they do on land. 
2: Twice as large as they do on land. 
3: Closer and larger than they do on land. 
4: Smaller and farther away than they do on land. 
Closer and larger than they do on land. 
 
 
 
As you descend: 
1: Colors appear to fade. 
2: Reds ...
Define SCUBA 
S - self 
C - contained 
U - underwater 
B - breathing 
A - apparatus 
 
 
 
List 3 important scuba diving changes that occurred in 1950s 
1) published USN dive tables 
2) invented the personal dive computer 
3) equipment manufacturers made improvements to the design and workmanship of...
Preview 2 out of 12 pages
Add to cartDefine SCUBA 
S - self 
C - contained 
U - underwater 
B - breathing 
A - apparatus 
 
 
 
List 3 important scuba diving changes that occurred in 1950s 
1) published USN dive tables 
2) invented the personal dive computer 
3) equipment manufacturers made improvements to the design and workmanship of...
Objects under water appear: 
Closer and larger than they do on land 
 
 
 
What happens to colors under water 
As you descend, colors appear to fade, not intensify. Blues and grays are the last remaining colors at depth. 
 
 
 
Because sound travels faster under water: 
Sound's increases speed unde...
Preview 2 out of 7 pages
Add to cartObjects under water appear: 
Closer and larger than they do on land 
 
 
 
What happens to colors under water 
As you descend, colors appear to fade, not intensify. Blues and grays are the last remaining colors at depth. 
 
 
 
Because sound travels faster under water: 
Sound's increases speed unde...
Objects under water appear 
Closer and larger than they do on land 
 
 
 
How much faster does sound travel in water, compared to air? 
4 times 
 
 
 
Water conducts heat away from your body 
25 times faster than air does 
 
 
 
As you descend 
colors fade, reds and oranges fade first, 30 meters see...
Preview 2 out of 8 pages
Add to cartObjects under water appear 
Closer and larger than they do on land 
 
 
 
How much faster does sound travel in water, compared to air? 
4 times 
 
 
 
Water conducts heat away from your body 
25 times faster than air does 
 
 
 
As you descend 
colors fade, reds and oranges fade first, 30 meters see...
Which of the following statements are not true about safety and ammunition? 
Always keep ammunition in the gunsmithing area 
 
 
 
It is required to both __________________ and _____________________ once the action is open to ensure the weapon is safe. 
Visually Check; Physically Check 
 
 
 
The in...
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Add to cartWhich of the following statements are not true about safety and ammunition? 
Always keep ammunition in the gunsmithing area 
 
 
 
It is required to both __________________ and _____________________ once the action is open to ensure the weapon is safe. 
Visually Check; Physically Check 
 
 
 
The in...
Preview 2 out of 7 pages
Add to cartSDI Final exam with 100% correct answers
To reach HCI goals, managers and developers need to be knowledgeable about the interplay among: 
A) users 
B) tasks 
C) the environments in which systems are used 
D) All of the above 
D) All of the above 
 
 
 
In HCI, well-being means concern for the human's: 
A) Physical state, such as comfort, ...
Preview 2 out of 6 pages
Add to cartTo reach HCI goals, managers and developers need to be knowledgeable about the interplay among: 
A) users 
B) tasks 
C) the environments in which systems are used 
D) All of the above 
D) All of the above 
 
 
 
In HCI, well-being means concern for the human's: 
A) Physical state, such as comfort, ...
Objects under water appear: 
both closer and larger than they do on land 
 
 
 
What happens to colors as you descend? 
they appear to fade 
 
 
 
How much faster does sound travel in water, compared to air? 
four times as fast 
 
 
 
Water conducts heat away from your body... 
25 times faster than ...
Preview 2 out of 9 pages
Add to cartObjects under water appear: 
both closer and larger than they do on land 
 
 
 
What happens to colors as you descend? 
they appear to fade 
 
 
 
How much faster does sound travel in water, compared to air? 
four times as fast 
 
 
 
Water conducts heat away from your body... 
25 times faster than ...
5x sold
CH 2 : What is the most important rule in scuba diving? 
never hold your breath 
 
 
 
CH 4 : Describe from start to finish the steps to disassembling your scuba system 
- remove accessories and weights 
- decompress the system : turn the valve knob completely clockwise, decompress the second gauges...
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Add to cartCH 2 : What is the most important rule in scuba diving? 
never hold your breath 
 
 
 
CH 4 : Describe from start to finish the steps to disassembling your scuba system 
- remove accessories and weights 
- decompress the system : turn the valve knob completely clockwise, decompress the second gauges...
Describe all the steps to assemble a BCD and regulator to a scuba cylinder. 
Spin the tank around so that the back of the valve is facing you. Place the BCD band(s) over the top of the cylinder so that the back of the BCD is facing you. Raise or lower the BCD so the top is even with the cylinder val...
Preview 2 out of 15 pages
Add to cartDescribe all the steps to assemble a BCD and regulator to a scuba cylinder. 
Spin the tank around so that the back of the valve is facing you. Place the BCD band(s) over the top of the cylinder so that the back of the BCD is facing you. Raise or lower the BCD so the top is even with the cylinder val...
What is the absolute pressure (in atmospheres/bars, ATM) at 20 meters(66 feet) 
2 ATM 
 
 
 
What will be the volume in a ball that is filled with two cubic feet of air at 99 feet when it's taken to the surface? 
8 cubic feet 
 
 
 
How many more times dense is the air in a balloon at 4 ATM/bar com...
Preview 1 out of 2 pages
Add to cartWhat is the absolute pressure (in atmospheres/bars, ATM) at 20 meters(66 feet) 
2 ATM 
 
 
 
What will be the volume in a ball that is filled with two cubic feet of air at 99 feet when it's taken to the surface? 
8 cubic feet 
 
 
 
How many more times dense is the air in a balloon at 4 ATM/bar com...
What is the absolute pressure (in atm) at 66 feet? 
2 atm 
 
 
 
What will be the volume in a ball that is filled with two cubic feet of air at 99 feet when it's taken to the surface? 
8 cubic feet 
 
 
 
How many more times dense is the air in a balloon at 4 atm compared to the air density at the ...
Preview 2 out of 5 pages
Add to cartWhat is the absolute pressure (in atm) at 66 feet? 
2 atm 
 
 
 
What will be the volume in a ball that is filled with two cubic feet of air at 99 feet when it's taken to the surface? 
8 cubic feet 
 
 
 
How many more times dense is the air in a balloon at 4 atm compared to the air density at the ...
What does SCUBA stand for? 
self-contained underwater breathing apparatus 
 
 
 
List the three important scuba diving changes that occurred in the 1950s 
dive tables, PCD (personal computer devise), enhanced diving equipment 
 
 
 
Name three different devices that modern dive computers replace. 
d...
Preview 1 out of 2 pages
Add to cartWhat does SCUBA stand for? 
self-contained underwater breathing apparatus 
 
 
 
List the three important scuba diving changes that occurred in the 1950s 
dive tables, PCD (personal computer devise), enhanced diving equipment 
 
 
 
Name three different devices that modern dive computers replace. 
d...
Which of the following methods are appropriate for accounting for divers at the end of the dive? 
1: Head count. 
2: Equipment count. 
3: Checking for empty seats on the boat. 
4: A 'by name" roll call. 
A 'by name" roll call. 
 
 
 
The first step in assisting a tired diver back to the boat or ...
Preview 3 out of 19 pages
Add to cartWhich of the following methods are appropriate for accounting for divers at the end of the dive? 
1: Head count. 
2: Equipment count. 
3: Checking for empty seats on the boat. 
4: A 'by name" roll call. 
A 'by name" roll call. 
 
 
 
The first step in assisting a tired diver back to the boat or ...
True or False. Oxygen Enriched Air is a term some divers use to refer to Nitrox. 
True 
 
 
 
The air we normally breathe consists primarily of: 
Nitrogen and Oxygen 
 
 
 
A mixture of nitrogen and oxygen in which the percentage of oxygen is greater than that found in air is generally called: 
Enri...
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Add to cartTrue or False. Oxygen Enriched Air is a term some divers use to refer to Nitrox. 
True 
 
 
 
The air we normally breathe consists primarily of: 
Nitrogen and Oxygen 
 
 
 
A mixture of nitrogen and oxygen in which the percentage of oxygen is greater than that found in air is generally called: 
Enri...
What is the main purpose of a snorkel? 
It allows you to conserve air from your scuba cylinder. 
 
 
 
How do you know if a mask fits correctly? 
You press it against you face and inhale through the nose, if it stays then you are good. 
 
 
 
Name at least one visual and one audible rescue signaling...
Preview 1 out of 3 pages
Add to cartWhat is the main purpose of a snorkel? 
It allows you to conserve air from your scuba cylinder. 
 
 
 
How do you know if a mask fits correctly? 
You press it against you face and inhale through the nose, if it stays then you are good. 
 
 
 
Name at least one visual and one audible rescue signaling...
What does "SCUBA" stand for in scuba diving? 
self-contained underwater breathing apparatus 
 
 
 
List the three important scuba diving changes that occurred in the 1950s? 
1. No full body suits 
2. Published dive tables 
3. Equipment changes 
 
 
 
Name three different devices that modern dive c...
Preview 2 out of 10 pages
Add to cartWhat does "SCUBA" stand for in scuba diving? 
self-contained underwater breathing apparatus 
 
 
 
List the three important scuba diving changes that occurred in the 1950s? 
1. No full body suits 
2. Published dive tables 
3. Equipment changes 
 
 
 
Name three different devices that modern dive c...
Define risk management 
Planning ahead, employing good diving practices, and knowing what to do before an emergency arises. 
 
 
 
Why should you avoid consuming drugs or alcohol prior to a dive? 
it can greaten the risk of decompression sickness 
 
 
 
what elements should you and your buddy agree ...
Preview 1 out of 1 pages
Add to cartDefine risk management 
Planning ahead, employing good diving practices, and knowing what to do before an emergency arises. 
 
 
 
Why should you avoid consuming drugs or alcohol prior to a dive? 
it can greaten the risk of decompression sickness 
 
 
 
what elements should you and your buddy agree ...
describe all the steps to assemble a BCD and regulator to a scuba cylinder. 
Spin the tank around so that the back of the valve is facing you. Place the BCD band(s) over the top of the cylinder. Raise or lower the BCD so the top is even with the cylinder valve. Fasten the buckles. Remove dust cap, h...
Preview 1 out of 3 pages
Add to cartdescribe all the steps to assemble a BCD and regulator to a scuba cylinder. 
Spin the tank around so that the back of the valve is facing you. Place the BCD band(s) over the top of the cylinder. Raise or lower the BCD so the top is even with the cylinder valve. Fasten the buckles. Remove dust cap, h...
What is the main purpose of a snorkel? 
It's used when a long swim on the surface is required in order to conserve air in the tanks. 
 
 
 
How do you know if a mask fits correctly? 
1. Press the mask against your face without using the strap 2. Make sure there's no hair under the skirt of the mas...
Preview 1 out of 4 pages
Add to cartWhat is the main purpose of a snorkel? 
It's used when a long swim on the surface is required in order to conserve air in the tanks. 
 
 
 
How do you know if a mask fits correctly? 
1. Press the mask against your face without using the strap 2. Make sure there's no hair under the skirt of the mas...
What is the main purpose of a snorkel?correct answerIt's useful on long surface swims because it allows you to conserve air from your scuba cylinder. 
 
How do you know if a mask fits correctly?correct answerYou press it against your face and inhale through the nose, if it stays then you are good. ...
Preview 1 out of 2 pages
Add to cartWhat is the main purpose of a snorkel?correct answerIt's useful on long surface swims because it allows you to conserve air from your scuba cylinder. 
 
How do you know if a mask fits correctly?correct answerYou press it against your face and inhale through the nose, if it stays then you are good. ...
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