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PADI Open Water Exam Study Guide questions with answers

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PADI Open Water Exam Study Guide questions with answers

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PADI Open Water Exam
Study Guide questions
with answers

When is an object positively buoyant? - correct answer ✔When it displaces a volume of
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water weighing more than its own weight.
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When is an object negatively buoyant? - correct answer ✔When it displaces a volume of
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water weighing less than its own weight.
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When is an object neutrally buoyant? - correct answer ✔When it displaces a volume of
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water weighing the same as its own weight.
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Why two pieces of equipment do you use to control your buoyancy? - correct answer
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✔BCD, Lead weight |||||| ||||||




What does buoyancy help with when you are underwater? - correct answer ✔Controlling
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where you are |||||| ||||||




What does buoyancy help with when you are at the surface? - correct answer ✔Floatation,
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conserving energy ||||||




How does the buoyancy of an object differ in fresh/salt water? - correct answer ✔More
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buoyant in salt than fresh |||||| |||||| |||||| ||||||

, When you exhale what happens? - correct answer ✔Lung volume decreases so you have
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less buoyancy. ||||||




When you inhale what happens? - correct answer ✔Lung volume increases so you have
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more buoyancy. ||||||




Why don't you feel air pressure? - correct answer ✔Your body is primarily liquid, which is
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incompressible and distribute pressure equally throughout your whole body. |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Where are some air spaces located in the body? - correct answer ✔Ears, sinuses, lungs
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Do you always feel the pressure in body air spaces? - correct answer ✔Only if the pressure
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is different inside and outside the air spaces.
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1 bar is what depth? - correct answer ✔0m/0ft
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2 bar is what depth? - correct answer ✔33ft/10m
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3 bar is what depth? - correct answer ✔66ft/20m
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4 bar is what depth? - correct answer ✔99ft/30m
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How is air volume affected when depth is increased? - correct answer ✔It decreases
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How is air density affected when depth is increased? - correct answer ✔It increases
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What happens if you take an air volume underwater with you in a flexible container or
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inverted jar? - correct answer ✔As pressure increases the volume decreases, same air but
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smaller space. ||||||

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