PADI SCUBA - OPEN WATER QUESTIONS WITH CORRECT ANSWERS GRADED TO PASS

Padi's Four E Philosophy - Equipment, Education, Experience, Environment 0-1 As a newly certified PADI Open Water Diver, I will be trained to dive with a buddy as deep as _____ - 18 meters/60 feet 1-1.1 As you descend, what happens to pressure - Increases How does pressure increase as you descend? - The pressure increases by one bar/ata for each 10 meters/33 feet you descend What is the pressure at 0 meters/0 feet? - 1 bar/ata What happens to air volume as depth and pressure increase? - Volume decreases, for example if you are at the depth of 33 ft, pressure would be 2 bar/ata and air volume would be 1/2 What happens to air density as depth and pressure increase? - Air Density increases, for example if you are at the depth of 33 ft, pressure would be 2 bar/ata and air density would be x2 1-1.5 A balloon fully inflated and sealed at 10 meters/33 feet would probably ____ during ascent to the surface - Burst 1-2.1 As I descend, increasing pressure affects my: - mask, ears, sinuses A squeeze is caused by: - a pressure imbalance between the surrounding pressure and an air space 1-2.3 Equalization is the process of: - Adding air to an air space 1-2.4 I should equalize: - Before I feel pain or discomfort 1-2.5 I'm descending and I discover I can't equalize. The first think I would do is: - stop by descent and signal my buddy/the instructor 1-3.1 The most important rule in scuba diving is to: - Breathe continuously and never hold your breath Holding your breath while scuba diving can lead to: - lung overexpansion injuries 1-3.3 During ascent I feel discomfort in my ears. I should: - stop, descend slightly and allow trapped air to work its way out Positive buoyancy - floats negative buyoancy - sinks neutral buoyancy - weighs the same as the water it displaces and neither floats nor sinks When I descend, my buoyancy tends to: - decrease When I ascend, my buoyancy tends to: - increase What are the three most important considerations in choosing scuba equipment? - suitability, fit, and comfort What are the two basic fin styles? - adjustable and full-foot My primary considerations while choosing fins are: - fit and blade size Burst disk - a safety device that relieves accidental overpressure by releasing air before reaching the pressure at which the cylinder would fail How often do scuba cylinders require pressure testing? - Every 2-5 years How often do scuba cylinders require visual inspection? - Annually What is the most important feature in my weight system? - Quick release Trim - having the right distribution of weight What are accepted ways of equalizing my ears? - Swallow and wiggle the jaw from side to side, Block my nose and attempt to gently blow through it My buddy and I are planning a dive to 18 meters/60 feet. We would expect our air supply to last ____ at 10 meters/33 feet, all else being the same. - Shorter than What are the three benefits of the buddy system? - practicality, safety, and fun True or false, there is no way to use a DIN regulator on a toke cylinder valve - false Underwater objects appear: - larger/closer While underwater, I want to move efficiently by: - being streamlined, swimming slowly and steadily, and maintaining proper trim What is the proper procedure for buddy separation? - Search for no more than a minute, then reunite on the surface Which of the following steps should I take before actually beginning my descent? - orient myself with something at surface, check that my computer is active, confirm my buddy is ready While boat diving, my buddy and I ascend to the surface. When I reach the surface I should: - inflate my BCD, switch to my snorkel and signal "okay" to the divemaster Which of the following can be a problem before the dive when diving on a warm day in a wet or dry suit? - overheating If there is a current, how would you begin your dive? - Begin swimming into the current so that when you head back the current will assist you return instead of pushing you away from your exit What are some conditions that may affect me while diving? - temperature, water movement, sunlight, aquatic life, and bottom composition Although somewhat subjective, I measure visibility as how far I can see: - horizontally I want to avoid bottom contact because: - it helps keep the water clearer, there may be some hazard of cuts, scrapes or stings The four stages of dive planning: - Advance planning, preparation planning, last-minute preparation and predive planning What is one way to avoid disorientation while descending and ascending? - follow a reference My buddy and I get disoriented while boat diving. There is a mild current and we surface away from the boat. We should ____. If unable to reach the boat we should ____ - swim across the current to reach trail line; become buoyant and signal boat What are risks of diving beyond my limits? - in some forms of diving, the hazards are not obvious, it can cause me to have a false sense of security, anxiety from doing so can distract me from noticing other problems To prevent/ handle injuries caused by aquatic life, I should: - watch where I put my feet, hands, and knees; wear an exposure suit, treat all organisms with respect; be familiar with potentially hazardous animals; be prepared to provide first aid