A PACKAGE DEAL!! FOR SDI Exams with 100% correct solutions

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 ...

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...

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...

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...

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...

SDI 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, ...

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 ...

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...

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...

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...

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 ...

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...

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 ...