Academicmaterials

All of the following are ways to check for the availability of Nitrox at travel destinations, except: - ️️Consult the Old Diver's Almanac Why is it important for team members to use the same Nitrox mixture? - ️️All of the above: Doing so means all members will have the same MOD, It reduces the risk that one buddy will exceed his MOD by following a partner who has a deeper MOD, It simplifies dive planning True or False: If you do not set your dive computer's FO2 prior to every di...

T/F: When polishing brass, you can use 320-grit, 400-grit, or 600-grit so the shine will be forgiving of small scratches/imperfections on the surface. - ️️False A ------- muzzle will distribute the exiting gasses ------- around the bullet, causing little to no disruption in trajectory. - ️️Concentric, evenly 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 primar...

Once the field stripping procedure for pump-action shotguns has been completed, you can examine the parts for any wear or damage. The most critical areas to be checked are the Barrel, Action, FCG, Feeding Device, and which of the following: - ️️Furniture Which tools are designed to cut deep and remove material rapidly, are known as gouges and feature arched leading edges, which dig into the workpiece? - ️️Chisel Which hammer is usually reserved for smaller jobs, driving smaller pin...

What is the RSTC? - ️️an association of dive training agencies dedicated to safety in recreational sport diving and the development of minimum training standards. T/F? To qualify as a TDI Divemaster, an individual must first qualify as an SDI Divemaster, and must also possess a certification as a TDI Technical Diver. - ️️True. The first civilian diver training in the USA was in Los Angeles county. - ️️True List two characteristics of tech diving that are beyond the limits of tr...

What should you do if you experience discomfort in your ears while descending? - ️️Stop descent, ascend a few feet. Equalize, then descend again. 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 la...

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 wheel is turning. Which of the following wheel types used in machine polishing will cut the fastest? - ️️Felt Lands in the throat are which are uneven in their short points are usually caused by...

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 replace. - ️️Modern dive computers replace the need for dive tables, gauges, and different alarms (audible and/or visual). What does "SCUBA" stand for in scuba diving? - ️️It stands for self-c...

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 REACTIONS. How much larger and closer do objects appear under water and why? - ️️33% larger, 25% closer Light bends in the air-space between the lens and your eyes List the three important sc...

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 other training agencies? - ️️First dive training agency to provide entry level scuba instruction that incorporates the use of personal dive computers --> more streamlined scuba course w/ more ...

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, the objective, and what to do when there is an emergency. when planning a repetitive dive, the ----- dive should be made first - ️️deepest describe the procedure recommended for a safety stop. -...

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 quickly snowball into a fullblown emergency. Describe from the start to finish the steps to disassemble your scuba system. - ️️1. Remove accessories and weights 2. Decompress the system: Turn the ...

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 focused underwater there needs to be an airspace between your eyes and the water What does scuba stand for? - ️️self contained underwater breathing apparatus Name 3 different devices that modern div...

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, which of the following would you consider the use of time in your business environment as? - ️️Time Spent True/False: According to your assigned video, Setting Up Shop, a garage or a shed se...

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. Describe the function of a scuba regulator first stage and second stage - ️️The first stage attaches to tank and reduces the high pressure air to an intermediate pressure for breathing (attaches to t...

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 - ️️During any 24-hour period, you can be exposed to a Nitrox mixture at its Maximum Operating Depth (MOD) for up to: Nitrogen and Oxygen - ️️The air we normally breathe consists primarily of:...

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 those observations to find an answer to a question. Quantitive Reasoning - ️️This means understanding how to compare numbers and interpret graphs, to perceive what they show about problems that...

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 navigation relies completely on constant practice and paying attention to the surroundings. - ️️True True or False: There are two main categories of underwater navigation that a diver needs to...

What medical problem can occur if a diver ascends much too rapidly for nitrogen to be slowly released? - ️️It can come out of solution into your blood making bubbles which collect at your joints causing the bends or decompression sickness. 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 If a scuba cylinder lasts 2 hours at sea level, how long will it last at 20 meters (66 feet)? - ️️40 minu...