Padi's Four E Philosophy correct answersEquipment, 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 _____ correct answers18 meters/60 feet
1-1.1 As you descend, what happens to pressure correct answersIncreases
How does pressure increase as you descend? correct answersThe pressure increases by one bar/ata for each 10 meters/33 feet you descend
What is the pressure at 0 meters/0 feet? correct answers1 bar/ata
What happens to air volume as depth and pressure increase? correct answersVolume 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? correct answersAir 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 correct answersBurst
1-2.1 As I descend, increasing pressure affects my: correct answersmask, ears, sinuses
A squeeze is caused by: correct answersa pressure imbalance between the surrounding pressure and an air space
1-2.3 Equalization is the process of: correct answersAdding air to an air space 1-2.4 I should equalize: correct answersBefore 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: correct answersstop by descent and signal my buddy/the instructor
1-3.1 The most important rule in scuba diving is to: correct answersBreathe continuously and never hold your breath
Holding your breath while scuba diving can lead to: correct answerslung overexpansion injuries
1-3.3 During ascent I feel discomfort in my ears. I should: correct answersstop, descend slightly and allow
trapped air to work its way out
Positive buoyancy correct answersfloats
negative buyoancy correct answerssinks
neutral buoyancy correct answersweighs the same as the water it displaces and neither floats nor sinks
When I descend, my buoyancy tends to: correct answersdecrease
When I ascend, my buoyancy tends to: correct answersincrease
What are the three most important considerations in choosing scuba equipment? correct answerssuitability, fit, and comfort
What are the two basic fin styles? correct answersadjustable and full-foot
My primary considerations while choosing fins are: correct answersfit and blade size