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True or false: The route to return to the straight point, known as the square course, is 180 degrees from, or directly opposite the initial course. - ️️False True or False: It is far too difficult for divers to measure distance underwater. - ️️False True or False: Success in underwater...

Environmental Science - ️️The use of scientific approaches to understand the complex systems in which we live; the systematic study of our environment and our place in it. Scientific Method - ️️_________: An orderly approach to asking questions, collecting observations, and interpreting ...

Administration of pure oxygen - ️️The most important first-aid procedure for a diver suspected of suffering from decompression sickness is: Specialized training, Additional equipment, and Topside support - ️️To properly engage in decompression diving requires: 150 Minutes or 2.5 hours - ...

How do you know if a mask fits correctly? - ️️First, you need to press the mask against your face without using the strap Then make sure there's no hair under the skirt of the mask while inhaling slightly. If the mask tightens against your face and doesn't fall off, it's a good fit. Descr...

The image below depicts which of the following steps in the firing process? - ️️The Priming Compound is Ignited and Travels to the Propellant A customer enters your facility and discusses their most recent hunt. This was strictly a friendly, nonprofessional conversation. According to the book...

How much lar When diving from a shore, the best time to dive is when there is the least amount of tidal current. BLANK tide is when there is no horizontal water movement. - ️️BLANK=slack ger and closer do objects appear underwater and why? - ️️25%, in order for your retinas to stay focus...

Define risk management. - ️️A means of preventing problems and planning a response to any emergency that arises. The concept of risk management involves planning ahead, employing good diving practices, and knowing what to do before an emergency arises. Without a plan, a simple problem can qui...

Describe what to do if you and your buddy become separated during a dive - ️️look around for a minute and ascend while looking for rising bubbles. then rap on your cylinder and listen for a reply. what elements should you and your buddy agree on before the dive? - ️️the depth, the time, ...

Which of the following factors do we take into account when measuring waves? - ️️Height, Length When water stratifies itself into layers, according to temperature, the boundary between layers is known as a(n): 1: Halocline. 2: Ichtyocline. 3: Thermodyne. 4: Thermocline. - ️️Thermoclin...

What type of marine life cause most diving injuries? - ️️Most diving injuries result from animal's defensive response to a perceived threat How much larger and closer do objects appear underwater and why? - ️️Objects underwater appear 25% larger and 25% closer What sets SDI apart from o...

We measure waves by their height and weight. 1: True. 2: False. - ️️False. Explanation: We measure waves by their height and length. Scuba cylinders must be: 1: Hydrostatically tested every four years and visually inspected every six months. 2: Hydrostatically tested and visually inspecte...

What should you do if a potentially dangerous animal underwater does not leave your area? - ️️Remain still Remain calm Slowly leave area What types of marine life cause most diving injuries - ️️Jellyfish or marine life which account for a temporary, painful sting. WATCH OUT FOR ALLERGIC...

Name three How much larger and closer do objects appear underwater and why? - ️️Water is denser than air, objects underwater appear closer than they actually are (25 percent closer). Objects also appear one third larger than they actually are. different devices that modern dive computers repl...

Nickel plating has been a popular finish for handguns and certain small parts of long guns since the turn of the century. The finish is applied by a process called: - ️️Electroplating When using a wheel for polishing: - ️️Always polish with sharp edges pointed in the same direction the w...