PADI Open Water Exam Study Guide
PADI Open Water Exam Study Guide
PADI Open Water Exam Study Guide
91. What are the most common sizes of 8,10,12,15 litres 106. What is a A gradual change to a layer of
cylinder capacity thermocline? colder water?
92. What BCD is most commonly used? jacket style 107. What is DIN valve Screw regulator into valve
108. What is first stage? Connect
109. What is K valve simple on/off valve 127. Why don't you feel Your body is primarily liquid, which
air pressure? is incompressible and distribute
110. What is mask exhale into mask by nose
pressure equally throughout your
equalisation?
whole body.
111. What is the J valve has built in mechanism that signals
128. Why do you take To give your body time to eliminate
when you are low on air
safety stops nitrogen, to allow you to stabilise
112. What is the normal 200 bar and control your ascent
full pressure of a
129. Why do you wear a Light behaves differently in water
scuba tank?
mask underwater? than in air, which affects how your
113. What is the O-ring Located in valve, when cylinder and eyes focus. Mask creates air space so
regulator connect forms air tight your eyes can focus.
seal (O-ring)
130. Why two pieces of BCD, Lead weight
114. When is an object When it displaces a volume of equipment do you
negatively buoyant? water weighing less than its own use to control your
weight. buoyancy?
115. When is an object When it displaces a volume of 131. Why use snorkels? Rest or swim with face in water, not
neutrally buoyant? water weighing the same as its own wasting cylinder air
weight.
132. You can prevent and establish positive buoyancy, dive
116. When is an object When it displaces a volume of control most surface within your limits, relax when you
positively buoyant? water weighing more than its own problems by dive
weight.
133. You should plan 4m deeper
117. When you exhale Lung volume decreases so you have your dive __ metres
what happens? less buoyancy. ___ in cold
118. When you inhale Lung volume increases so you have conditions
what happens? more buoyancy. 134. You should use a it warns off boaters
119. When you're larger and closer dive flag because local law may require it
underwater things
appear
120. When you rinse the Press purge, no dust cap
regulator don't..
121. When you shiver Get out of water and dry off and
seek warmth
122. Where are some air Ears, sinuses, lungs
spaces located in the
body?
123. Where can you get a Ears, sinuses, mask, lungs, teeth
squeeze?
124. Where do you attach Within the triangle
alternate air source?
125. Why can't you scuba Congestion can plug air passages
while sick? so you can't equalize
126. Why do divers need To regulate buoyancy
a BCD?