OPEN WATER DIVER, QUESTIONS WITH CORRECT ANSWERS GRADED TO PASS

As a newly certified PADI Open Water Diver, I will be trained to dive with a buddy as deep as... - 18 metres/60 feet As a PADI Scuba Diver, I may dive under PADI Instructor or PADI Divemast supervision as deep as... - 12 metres/40 feet PADI stands for... - Professional Association of Diving Instructors PADI's four E philosophy is... - Equipment, Education, Experience, and Environment The three basic parts of the PADI Open Water Diver course are... - Knowledge Development, Confined Water Dives, and Open Water Dives The requirements for earning my certification are... - five Knowledge Development sections, five Confined Water Dives, and four Open Water Dives over two days. In water, pressure increases by one bar for each... ... you descend. - 10 metres/33 feet Air volume... ...with pressure. - decreases proportionally Air density... ... with pressure. - increases proportionally At a depth of 66 ft, the air volume is... (ratio) - 1/3 At a depth of 132 ft, the air density is... (x#) - 5 As you descend in water, the pressure... - increases A depth change of 10 metres/33 feet causes a pressure change of... - 1 bar/ata If you take 6 litres of air from the surface to 20 metres/66 feet, the volume will be... ... litres. - 2 If you take 6 litres of air from the surface to 20 metres/66 feet, the density will be... ... the density at the surface. - 3 times A balloon fully inflated and sealed at 10 metres/33 feet, would probably... ... during ascent to the surface. - burst The three major body air spaces that increasing pressure affects are... - ears, sinuses, and mask A squeeze is... - compression of body air space Equalization is... - balancing body air space pressure with outside pressure I should equalize every... - metre or few feet If I can't equalize, I should... - stop my descent and signal to my buddies or instructor. Ascend slightly and equalize. If I can't equalize and keep descending, ... can happen. - eardrum rupture, sinus rupture, and/or bruising around my eyes I should equalize gently because... - a forceful extended equalization can cause serious permanent injuries to my ears and hearing. Diving with a cold or allergy can cause... - congestion that might block normal airflow and make equalization impossible. Diving with earplugs can cause... - air spaces in my ears. Other body air spaces that are affected by increasing pressure are... - filled teeth and dry suits. The most important rule in SCUBA diving is... - breathe continuously and never, ever hold your breath. ... can happen if the most important rule in scuba diving is not followed. - Lung overexpansion A reverse block is... - when expanding air becomes trapped in a body air space. If I feel discomfort in any air space during ascent, I shall... - immediately slow and stop my ascent, descend a metre/few feet to reduce discomfort, and ascend more slowly. The deeper I am, the... ... I use my air. - faster At 33 feet, my air supply lasts... ...as long as it would at the surface. - 1/2 At 30 metres/99 feet, my air supply lasts... ...as long as it would at the surface. - 1/4