Preview

Chemistry

Good Essays
Open Document
Open Document
369 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Chemistry
Scuba diving is a form of underwater diving in which a diver uses a scuba set to breathe underwater. According to the Professional Association of Diving Instructor (PADI), a “DEEP DIVE” is considered to be anything from 18 meters (60 ft) to 30 meters (100 ft). A scuba diver moves around underwater by using swim-fins attached to the feet, however external propulsion can be provided by a diver propulsion vehicle. Scuba diving may be performed for a number of reasons; either for recreational purposes or employed professionally to perform tasks underwater such as military, rescue, or scientific diving. However, all deep-sea divers face the risk of acquiring decompression sickness (DCS), also known as the BENDS!

Scuba diving is a form of underwater diving in which a diver uses a scuba set to breathe underwater. According to the Professional Association of Diving Instructor (PADI), a “DEEP DIVE” is considered to be anything from 18 meters (60 ft) to 30 meters (100 ft). A scuba diver moves around underwater by using swim-fins attached to the feet, however external propulsion can be provided by a diver propulsion vehicle. Scuba diving may be performed for a number of reasons; either for recreational purposes or employed professionally to perform tasks underwater such as military, rescue, or scientific diving. However, all deep-sea divers face the risk of acquiring decompression sickness (DCS), also known as the BENDS!

Decompression sickness is a type of underwater diving hazard and a painful condition in the abdomen and limbs caused by the formation and enlargement of Nitrogen, Oxygen, or Helium bubbles in blood and tissues as a result of rapid reduction in pressure. Helium blockages are more common in technical divers and professional divers DCS can develop when a diver ascends too quickly after exposed to high pressure.
Decompression sickness is a type of underwater diving hazard and a painful condition in the abdomen and limbs caused by the formation and

You May Also Find These Documents Helpful

  • Good Essays

    Dive watches generally need to have a water resistance of at least 100 meters with 200 meters being the recommended minimum for scuba diving. Dive watches today are now available with water resistance ratings that are much deeper than you are likely to dive at. You will find watches here with ratings as high as 1000 meters for professional scuba diving. Some also feature helium release valves - a one-way pressure relief valve typically consisting of a strong spring, a plug, and a good rubber gasket. The helium valve prevents damage to the watch due to the buildup of helium gas in the watch after extended stays inside the dry pressurized habitats used for commercial diving.…

    • 472 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 390 Words
    • 2 Pages

    Fill a small test tube halfway with copper (II) sulfate solution. Add a 2.0 gram iron rod to the solution and observe the reaction.…

    • 390 Words
    • 2 Pages
    Good Essays
  • Better Essays

    Raymer’s main argument or emphasis conveyed was of the many hazards that were presented to the salvage and rescue divers during the aftermath of the hectic attack. The general concept was of the intensive salvage operations that were conducted which equated to over 20,000 man-hours underwater. Several interesting facts are described by Raymer which the average person would have no idea about, such as the dangers of entering a room that was once sealed but contains rust due to the fact that the iron oxide components of rust deplete oxygen which would suffocate an unprepared diver upon entering. The dangers of the job of a diver are clearly substantiated and validated in Raymer’s book, and successfully serve great justice to divers who worked in the harshest conditions. Raymer does an excellent job…

    • 1283 Words
    • 6 Pages
    Better Essays
  • Powerful Essays

    Gerry Mullen, CEO of Red Lobster restaurants, has been faced with a dilemma. He recently received an email from Terry Modotti, Vice President for Public Relations concerning the lobster retrieval in La Mosquitia, also known as the Mosquito Coast. The article states that many of the young working men are being killed and maimed to make lobsters available at cheap process to consumers in the United States. The men, known as buzos, must dive up to 130 feet for lobster, and face dangerous decompression sickness which begins with paralysis and ends in a slow death. This is due to the fact that there are no medical or decompression facilities on the boats, and there is also no equipment to aid the divers as they ascend to the surface of the water. However, there has been effort taken to try and help this negative situation on the Mosquito Coast. A non-profit organization, Sub Ocean Safety (SOS), founded by Bob Izdepski, was set up to help divers by installing decompression chambers allowing divers to gradually be brought to the surface. However, the divers do not reach the surface within the allotted five minute period which is needed for the chambers to be effective. SOS would also like to see regulations on diving—control over the number of dives per day, safety equipment on boats, and a limit on the lobster season to maintain the lobster population. Being the CEO of Red Lobster for a mere two years, Gerry has to make a decision as to what course of action he is going to take concerning this dilemma. There are many options that Gerry could execute--each complete with advantages and disadvantages; but Gerry needs to make a decision on only one option. By investigating the advantages and disadvantages of each option, I will be able to accurately advise Gerry as to which course of action to take.…

    • 2435 Words
    • 10 Pages
    Powerful Essays
  • Good Essays

    Essay On Marine Mammals

    • 570 Words
    • 3 Pages

    Marine mammals also breathe air, and must come up to the surface of the water to breathe. They have small lungs in relation to their body size compared to humans to reduce problems of nitrogen building up in the blood caused by diving. They have to make sure no water gets into the gas exchange system, and gas exchange must occur efficiently. Marine mammals have to be able to hold their breaths for long periods of time while they are diving. Air enters the lungs through the trachea, which splits into two bronchi and then smaller bronchioles. All of these tubes are held open by rings of cartilage. On the bronchioles are alveoli, where gas exchange takes place. These alveoli greatly increase the surface area:volume ratio, increasing the efficiency of gas exchange and more particles can diffuse at once. The alveoli are surrounded by capillaries so gases can diffuse between the air and blood. Mammals have a circulatory system, so their size isn't limited by their gas exchange system. Because mammals breathe air, unwanted particles sometime get into the gas exchange system. There is mucus in the trachea and bronchioles to keep them clean and moist. The alveoli must stay moist so oxygen can dissolve and then diffuse into the blood. The lungs are also kept moist…

    • 570 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Rottnest Safety Practice

    • 548 Words
    • 3 Pages

    Due to our constant interest in the marine life and activity display underwater, we kept finding our selves taking in large breaths to be able to go down and explore. Learning how to equalise my ears was a life saver, as it allowed me to get closer then ever before to the fauna and flora on the sea bed.…

    • 548 Words
    • 3 Pages
    Good Essays
  • Good Essays

    SCUBA Solving Injuries

    • 1247 Words
    • 5 Pages

    10. Know how to take spinal precautions and fully immobilize a patient on a LSB with c-collar…

    • 1247 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Chemistry

    • 641 Words
    • 3 Pages

    In a laboratory experiment, a student reacted 2.8 grams of Fe (s) (steel wool) in excess CuSO4 (aq), according to the following balanced equation: Fe(s) + CuSO4 (aq) -> FeSO4 + Cu(S).…

    • 641 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    chemistry

    • 560 Words
    • 3 Pages

    The presentation should be engaging for the audience (you can direct it to a specific audience or your general community), and should summarize all of the important research and findings. The presentation should include:…

    • 560 Words
    • 3 Pages
    Good Essays
  • Good Essays

    1. Why is this conflict important? This internal conflict that Chris faces on how to proceed with their financial situation and whether or not to pursue his dream of a dive shop is important to Chris’s decision to began diving. This goal of opening a dive shop propelled him to achieve higher goals in diving.…

    • 543 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Abyssal Zone

    • 864 Words
    • 4 Pages

    Initially, the abyssal zone and the living organisms inside it, suffers the extreme conditions. The word “abyss” is taken from a Greek word, which means “bottomless sea”. The abyssal zone itself is located between 2000 and 6000 meters underneath the ocean surface. It is located under the bathyal zone and above the hadal zone. In this depth, sunlight is unable to penetrate through. Therefore, this zone is filled with complete and perpetual darkness. At the same time, in a location this deep, the pressure is unbearable to humans. It is written that, “Because water pressure increases one atmosphere every 33 feet in depth, animals in the abyssal zone must be able to withstand tremendous amounts of pressure.” (Abyssal). Therefore, animals must be able to withstand up to 11,000 psi. It is incredible how certain organisms are able to survive in this depth, since this amount of pressure would crush a human immediately. Moreover, since the depth oh this biome is extremely deep, the temperature varies from 0 to 4 degrees Celsius. In addition to that, the salinity of the water in the abyssal zone range between 34.6 and 35.0 parts per thousand. We do no realize it, but the abyssal zone covers 60% of the earth and 83% of the oceans. So with these abiotic factors and harsh conditions mentioned, we tend to ask the question, “How is it possible for organisms to inhabit this biome?”…

    • 864 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Crotch Hook

    • 1113 Words
    • 5 Pages

    The World Health Organization has defined drowning as "the process of experiencing respiratory impairment from submersion/immersion in liquid." While life jackets are not the most fun and comfortable part of swimming for children, drowning can be avoided if more children wear them. There are styles that allow for comfort as well as safety. They have pink fish, blue fish, sharks and even mermaids. All of these styles are made to make it fun for kids while giving parents peace of mind. There are almost 4,000 drowning deaths in the United States alone. Drowning is the most common in children ages 1-4. (AM FAM PHYSICIAN) According to the WHO there are 370,000 deaths worldwide from drowning, making it the 3rd leading cause of death…

    • 1113 Words
    • 5 Pages
    Powerful Essays
  • Good Essays

    Drowning, also defined as a respiratory impairment caused by being in or under a liquid, restrains one’s intake of oxygen. The lack of oxygen prevented from being distributed throughout the body causes it to slowly shut down then the victim will eventually go unconscious and sometimes die. Although drowning restricts one’s breathing, drowning in freshwater, and drowning in salt water will react in the body in two completely different ways (Helmenstine, “Drowning in Freshwater).…

    • 638 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Rebreathers, the subject of this article, are an exciting new technology. The background and chemistry of rebreathers is quite interesting in that they were largely improved upon and regularly used by a famous American cave diver, Bill Stone, who wanted to more deeply explore underwater cave passages. He demonstrated his rebreather in 1987 to the diving community. They allow a human to breathe for long periods of time either underwater or in a different atmosphere. Through a carefully controlled exothermic reaction in one partition of the device, they essentially “scrub” exhaled carbon dioxide in order to allow it to be “rebreathed” in a closed system, hence the name of the equipment (Tabor, 2010).…

    • 480 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Scuba Diving

    • 624 Words
    • 3 Pages

    Adventure, adrenaline and excitement are some of the feelings that involve scuba diving. It’s a popular sport in which divers have to use special equipment that includes an oxygen tank, wet suit, mask, fins, etc. to reach the deep sea. Scuba diving is more than a simple sport, it allows people to explore, discover and have a real contact and experience with the ocean and the marine life. In this essay I will explain how my curiosity about scuba diving born, my first scuba diving lessons and experience in the sea water, the problems I got when I started to scuba dive and finally I will explain how scuba diving change my life.…

    • 624 Words
    • 3 Pages
    Good Essays