scuba diving PE and Healtfh.pptx Scuba diving involves breathing underwater using a self-contained underwater breathing apparatus (scuba).

Scuba diving involves breathing underwater using a self-contained underwater breathing apparatus (scuba). Scuba equipment can cost $2,600 and divers use hand signals and lights to communicate underwater. There are many types of scuba diving including recreational, professional, cave, wreck, deep, and ice diving. Interested divers can take scuba courses from Professional Association of Diving Instructors to learn skills in confined water before doing open water dives locally or on vacation.

1. Lesson 3: Scuba Diving

2. ● trace the history of scuba diving; ● explain the skills needed in scuba diving; and ● demonstrate how to communicate underwater.

3. The scuba is an acronym for Self-Contained Underwater Breathing Apparatus or SCUBA. Diving in water scuba is a way for a diver to use a control unit, a breathing device, and a pneumatic tube, to naturally breathe underwater . Divers can navigate the seas with this equipment for a longer and more profound time.

4. Modern divers are lucky enough to be able to go deep and remain underwater longer. The start of the dive is traced from the use of hole shafts as a means to remain underwater longer. More effective breathing methods were invented from the simple reed. The following schedule describes the development of dive (US Navy Diving Manual, 1993).

5. Skills Needed in Scuba Diving There are many abilities and processes required to initiate the pre-dive, descend, go deep below, and surface up . Pre-Dive Pre-dive diving is a new experience as one gets to explore a new universe with only water species. But if protection precautions are not followed, it becomes a disaster.

6. Pre-Dive Safety Check Before a diver goes to the sea, a security check must be carried out. This happens when a diver wears his equipment and is through with a diving mate. There is a last-minute boat analysis right before a diver goes into the harbor. This ensures the smooth operation of all gears. The safety review is carried out with the dive buddy before the drive. Each reviews the equipment of each other and gets acquainted with the equipment of their dive buddy . Each one should know how to help each other underwater in an emergency.

7. These are the five steps of the pre-dive safety check (Gibb, n.d . ): 1. Test the buoyancy compensator to ensure that the inflator and deflator buttons work and the pull strings are not a burden . 2. Verify the Weights The weights should be visible and have an unencumbered quick release mechanism. The weight belt should be positioned as the correct release and the belt end free and the other gear should be removed so that it will quickly slip apart when it is opened. In the event of an emergency all divers should be able to release weights .

8. 3. Check the Releases Check that the BCD clips are locked and make sure to tighten the belts. The BCD link to the scuba tank should also be checked for closure of the tank band. It must be close enough so that as the tank enters the bath, it does not slip and cause a problem. 4. Check the Air Regulator The correct working of the regulator is important. Check a tank valve multiple times, as your mate watches the pressure gauge needle, by breathing from the tank valve regulator for your pal. Until the needle of the pressure gauge falls dramatically, the tank valve is open. Till 3000 psi or 200 bar, the tanks must be packed.

9. Confirm that the controller breathes smoothly and safely. Talk to your mate about the location of the alternative air supply and verify it several times by breathing . 5. Final Check This is the final check at which all the gears are cross checked.

10. Descending Going down in water should be done in a very controlled and slow manner. 1. When the problems of ear equalization occur and cannot halt the descent, an ear barotrauma or an ear lesion should be used . 2. You have to descend carefully so that you do not fall on the ground. Take note that a soft fine kick will harm corals or other water life, kill any sensitive historical records on a shipwreck, or cause visibility losses . 3. During the descent, remain close to your companion . 4. More incremental descent can make the scuba less challenging than pleasant.

11. Ascending It is important to follow the steps when ready for an ascent: 1. Firstly, give a signal to the fellow diver and then begin the ascent. 2. Start the ascent when the air in the tank remains. (Never wait for the exhaustion of air supply.) 3. Go gradually. Check the computer and profile measurement or dive machine and go up by the rate of 30 feet per minute, even though US Navy Dive Tables permit a limit of 20 feet or 18 meters per minute. 4. Do not hold your breath and exhale continuously while performing an ascent. 5. Make a rest from the security point of view as you cross 3 to 5 minutes by 15 feet. A safety stop gives the body time to remove nitrogen and therefore reduces the chance of a disease of decompression.

12. 6. Stretch your hand over the head, look up on the ground and spin 360 degrees slowly as you go up. 7. Take the surface slowly. Inflate BCD and signal on the floor. Go back onto the boat.

13. Underwater Communication Communication between divers is important, and hand signals are the easiest way for them to communicate. A series of hand signals of universal use were provided by the Recreational Scuba Training Council organizations. These signals are taught and must be studied and perfected by any diving pupil . In 2005, the Recreational Scuba Training Council, Inc. (RSTC) published the common dive message:

14. Positive Impact of Diving on Health ● Daily diving enhances and retains the overall quality of exercise and durability. Water exercise is very beneficial due to the resistance of the normal water to our muscles. ● It increases cardiovascular efficiency and reduces the risk of cardiovascular disease, strokes, and circulatory complications in general. ● Muscle tone and vitality are increased by the water movement and physical exertion of carrying devices such as belt weights and diving equipment. ● By maintaining your balance and swimming at the same time, the brain increases focus and perception of the surroundings .

15. ● Your body is subject to a pressure gradient when you are underwater. Muscles function heavily and, at the same time, require oxygen, thereby expanding the veins so that oxygen can be carried out to the muscles.

16. QUIZ TIME!! Write True if the sentence is correct and False if it is not. 1. There is much basic equipment in scuba diving. 2. When you dive, there are factors to be considered such as age, health, and disabilities. 3. Scuba diving will require a certain certification or c-card for one to be allowed to dive or even to rent the scuba equipment. 4. Scuba is an acronym for Self-Contained Underwater Breathing Apparatus or SCUBA . 5. The beginnings of diving can be traced from using the hollow reeds as a way of staying longer underwater.

17. ANSWERS FOR THE QUIZ 1. True 2. True 3. True 4. True 5. True