- Study guides, Class notes & Summaries

True or False: You should equalize before beginning descent at the surface and continue to equalize every couple of feet thereafter. - True. Equalize early and often. What does SCUBA stand for? - Self Contained Underwater Breathing Aparatus List 3 important scuba diving changes that occurred in the 1950's. - 1. US Navy Dive tables published in 1957 2. First personal dive computer invented in 1959 3. Dramatic improvements in personal diving equipment What sets SDI (Scuba Diving Inte...

What should you do if you see a potentially dangerous animal underwater and it does not leave the area? - Avoid touching sea life. Always respect the environment. Be aware. List 3 different reasons that it is advisable to check with your local dive center before conducting a dive you're unfamiliar with. - 1. Find out local laws 2. Find out about typical environmental conditions 3. Find out about dangerous indigenous animals and appropriate first aid. What should you do if visual distor...

WITH SOLUTIONS GRADED A+ CH 2 : What medical problem can occur if a diver ascends much too rapidly for nitrogen to be slowly released? - the bends or bubbles in the blood CH 2 : List at least five factors that can predispose a diver to decompression sickness - 1. obesity 2. age 3. illness 4. past or present injuries 5. prior history of decompression sickness CH 2 : Describe the symptoms of DCS, including mild to severe signs and symptoms - - a rash or crackling of the skin may occur if...

Most widely used and readily understood type of alternative air source, Allows the donor to give either second stage to an out of air diver Scuba cylinders must periodically undergo: A. Hydrostatic testing. B. Anticorrosive recoating. C. Visual inspections. D. Both the first and third answers are correct. - First and third answers are correct the minimum information most dive computers provide you with while in dive mode - current and max depth, actual bottom time, decompression status: ...

1. Rash or Crackling Skin 2. Joint Pain (most common symptom) 3. Difficulty Breathing 4. Cough 5. Numbness 6. Dizziness 7. Tingling 8. Paralysis 9. Temporary Blindness 10. Unconciousness What is the depth threshold where most scuba divers begin to be affected by nitrogen narcosis? - 100 feet List two possible ways a diver may feel if they become "narked" at depth. - Extreme Euphoria Extreme Anxiety

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 and oranges are among the first colors to disappear. 3: At 30 m/99 ft, little color remains other than blues, grays, blacks and whites. 4: All of the abov

1 100% Pass Guarantee Katelyn Whitman, All Rights SDI Computer Nitrox class Exam Questions and Answers 100% Pass What are the most common symptoms of decompression sickness? - Pain in the joints, numbness, paralysis, loss of balance, muscle weakness, and impaired thinking What is the recommended first aid for decompression sickness? - Controlling their temperature and administering pure oxygen, then immediately getting them airlifted to a hospital for the decompression chamber What is...

SDI Exam Questions and Answers 100% Pass 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 under water makes it harder to determine the direction from which it is coming. Water conducts heat away from your body ___ times faster than air does - 25 The pr...

SDI Final Exam Questions and Answers 100% Pass 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 and oranges are among the first colors to disappear. 3: At 30 m/99 ft, little color remains other than blues, grays, blacks and whites. 2 100% Pass Gua...