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SDI Scuba Certification Exam Study Guide Questions and Correct Answers the Latest Update and Recommended Version
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 
gear 
Name 3 different devices that modern dive computers replace 
→ 1) dive tables 
→ 2) J-valves 
→ 3) depth gauges 
What sets SDI apart from other training agen...
- Exam (elaborations)
- • 16 pages •
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 
gear 
Name 3 different devices that modern dive computers replace 
→ 1) dive tables 
→ 2) J-valves 
→ 3) depth gauges 
What sets SDI apart from other training agen...
SDI (Scuba Diving International) Part 2 Questions and Correct Answers the Latest Update and Recommended Version
SDI (Scuba Diving International) Part 2 
Questions and Correct Answers the Latest 
Update and Recommended Version
- Exam (elaborations)
- • 3 pages •
SDI (Scuba Diving International) Part 2 
Questions and Correct Answers the Latest 
Update and Recommended Version
sdi scuba training chapter 1 Questions and Correct Answers the Latest Update and Recommended Version
sdi scuba training chapter 1 Questions and Correct Answers the Latest Update and Recommended Version
- Exam (elaborations)
- • 3 pages •
sdi scuba training chapter 1 Questions and Correct Answers the Latest Update and Recommended Version
SDI Open Water Scuba Diver Exam Questions and Correct Answers the Latest Update and Recommended Versio
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 seem blue and gray 
water temp does your body need thermal protection 
→ 86 degrees 
What does SCUBA mean 
→ self-contained underwater breathing apparatus 
When water stratifies itself into layers, acc...
- Exam (elaborations)
- • 12 pages •
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 seem blue and gray 
water temp does your body need thermal protection 
→ 86 degrees 
What does SCUBA mean 
→ self-contained underwater breathing apparatus 
When water stratifies itself into layers, acc...
SDI Open Water Questions and Correct Answers the Latest Update and Recommended Version
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 valve. Fasten the buckles. Remove dust 
cap, hold first stage in left hand, rotate the chambers until the primary second stage 
sits on the right. Screw the knob on your first stage until it is...
- Exam (elaborations)
- • 20 pages •
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 valve. Fasten the buckles. Remove dust 
cap, hold first stage in left hand, rotate the chambers until the primary second stage 
sits on the right. Screw the knob on your first stage until it is...
SDI Intro to Firearms (FFT 100) Questions and Correct Answers the Latest Update and Recommended Version
A ventilated hood, bench grinder, and a heavy duty bench vise are items that are found in 
the _____________ area of the gun shop. 
→ Welding and Heating Treating 
According to the video, SDI Intro to Gunsmithing, which mechanism of the 12 gauge pump 
ejects the shell? 
→ Cartridge Stop 
In the article titled, 
Gunsmithing Requires Innovation, the author had trouble finding reference material on which of 
the following barrel makers? 
→ F. Dumoulin 
True/False: If the firearm is on saf...
- Exam (elaborations)
- • 19 pages •
A ventilated hood, bench grinder, and a heavy duty bench vise are items that are found in 
the _____________ area of the gun shop. 
→ Welding and Heating Treating 
According to the video, SDI Intro to Gunsmithing, which mechanism of the 12 gauge pump 
ejects the shell? 
→ Cartridge Stop 
In the article titled, 
Gunsmithing Requires Innovation, the author had trouble finding reference material on which of 
the following barrel makers? 
→ F. Dumoulin 
True/False: If the firearm is on saf...
SDI GUNSMITHING TOOLS LAB (FTT 104) QUESTIONS AND CORRECT ANSWERS THE LATEST UPDATE AND RECOMMENDED VERSION
Preparation for disassembly is threefold: Preparation of the Firearm, Preparation of Your 
Workspace and Tools, and which of the following: 
→ Mental Preparation 
Which hammer is the workhorse of all the different hammers, capable of handling any project, 
large or small? 
→ Ball-Peen Hammer 
Which hammer is usually reserved for smaller jobs, driving smaller pins that require less force? 
→ Brass Hammer 
When cleaning a firearm, the second step in the process is which of the following: 
...
- Exam (elaborations)
- • 6 pages •
Preparation for disassembly is threefold: Preparation of the Firearm, Preparation of Your 
Workspace and Tools, and which of the following: 
→ Mental Preparation 
Which hammer is the workhorse of all the different hammers, capable of handling any project, 
large or small? 
→ Ball-Peen Hammer 
Which hammer is usually reserved for smaller jobs, driving smaller pins that require less force? 
→ Brass Hammer 
When cleaning a firearm, the second step in the process is which of the following: 
...
SDI FTT 211-7477 QUESTIONS AND CORRECT ANSWERS THE LATEST UPDATE AND RECOMMENDED VERSION
Why is the lathe turning process the most involved? 
→ It involves the greatest investment of tooling. 
The proper temperature suggested for the browning process was 150°: 200°, but the best 
way to tell if it is hot enough is if the solution readily evaporates. 
→ True 
T/F: The lathe turning process is the most involved process because it involves the greatest 
investment of tooling. 
→ True 
T/F: The shape of the muzzle is critical primarily for aesthetic reasons. 
→ False 
What i...
- Exam (elaborations)
- • 6 pages •
Why is the lathe turning process the most involved? 
→ It involves the greatest investment of tooling. 
The proper temperature suggested for the browning process was 150°: 200°, but the best 
way to tell if it is hot enough is if the solution readily evaporates. 
→ True 
T/F: The lathe turning process is the most involved process because it involves the greatest 
investment of tooling. 
→ True 
T/F: The shape of the muzzle is critical primarily for aesthetic reasons. 
→ False 
What i...
SDI Firearm Finishes and Engraving (FTT 201) Questions and Correct Answers the Latest Update and Recommended Version
One possible indicator that a barrel is likely to shoot poorly is pitting near the crown. 
→ TRUE 
Lands in the throat are which are uneven in their short points are usually caused by: 
→ Cleaning Rod Damage 
According to Joe Carlos, what must you do with a barrel to know for certain what its current 
capabilities are? 
→ Shoot It 
T/F: The electropolishing process both improves barrel accuracy and is safe for the 
environment. 
→ FALSE 
Joe Carlos' experiment showed that electropol...
- Exam (elaborations)
- • 17 pages •
One possible indicator that a barrel is likely to shoot poorly is pitting near the crown. 
→ TRUE 
Lands in the throat are which are uneven in their short points are usually caused by: 
→ Cleaning Rod Damage 
According to Joe Carlos, what must you do with a barrel to know for certain what its current 
capabilities are? 
→ Shoot It 
T/F: The electropolishing process both improves barrel accuracy and is safe for the 
environment. 
→ FALSE 
Joe Carlos' experiment showed that electropol...
SDI Open Water Set Questions and Correct Answers the Latest Update and Recommended Version
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 surface? 
→ 4 X as dense 
What is the abbreviation for an atmosphere? 
→ atm 
If a scuba cylindar lasts 2 hours (120 minutes) at sea level, how long will it last at 66 feet? 
→ 40 minutes 
How...
- Exam (elaborations)
- • 15 pages •
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 surface? 
→ 4 X as dense 
What is the abbreviation for an atmosphere? 
→ atm 
If a scuba cylindar lasts 2 hours (120 minutes) at sea level, how long will it last at 66 feet? 
→ 40 minutes 
How...
CCIM 101 Financial Analysis Questions and Correct Answers
MED SURG RN HESI EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+