PADI Open Water Exam Study Guide
When is an object undoubtedly buoyant? - ANSWhen it displaces a volume of water weighing
more than its very own weight.
When is an item negatively buoyant? - ANSWhen it displaces a quantity of water weighing less
than its personal weight.
When is an object neutrally buoyant? - ANSWhen it displaces a volume of water weighing
similar to its personal weight.
Why pieces of system do you use to control your buoyancy? - ANSBCD, Lead weight
What does buoyancy assist with when you are underwater? - ANSControlling wherein you are
What does buoyancy help with while you are at the floor? - ANSFloatation, maintaining strength
How does the buoyancy of an item differ in sparkling/salt water? - ANSMore buoyant in salt than
fresh
When you exhale what happens? - ANSLung quantity decreases so that you have much less
buoyancy.
When you inhale what takes place? - ANSLung extent will increase so you have extra buoyancy.
Why do not you experience air stress? - ANSYour frame is commonly liquid, that's
incompressible and distribute stress equally at some stage in your entire frame.
Where are a few air areas positioned within the frame? - ANSEars, sinuses, lungs
Do you usually experience the pressure in frame air spaces? - ANSOnly if the strain is
extraordinary outside and inside the air spaces.
1 bar is what depth? - ANS0m/0ft
2 bar is what depth? - ANS33ft/10m
three bar is what intensity? - ANS66ft/20m
four bar is what intensity? - ANS99ft/30m
How is air extent affected while depth is accelerated? - ANSIt decreases
, How is air density affected whilst depth is extended? - ANSIt will increase
What happens in case you take an air volume underwater with you in a flexible box or inverted
jar? - ANSAs pressure increases the quantity decreases, same air however smaller area.
How do you preserve air extent as you descend? - ANSEqualize
What is a "squeeze"? - ANSAs quantity decreases, stress pushes body tissues inwards toward
air area, inflicting pain. Pressure out of doors air area is greater than strain inner air area.
Where are you able to get a squeeze? - ANSEars, sinuses, mask, lungs, teeth
How do you equalise air areas in ears? - ANSBlow and squeeze nose, wiggle jaw, swallowing
How often should you equalise? - ANSEvery metre before discomfort
What do you do in case you sense discomfort? - ANSAscend until discomfort eases, equalise,
hold descent slowly
Why can not you scuba at the same time as unwell? - ANSCongestion can plug air passages so
that you cannot equalize
What is masks equalisation? - ANSexhale into masks by way of nose
What does your nostril need to be within the masks? - ANSTo equalize
First rule of diving - ANSAlways breathe continuously
What occurs in case you hold your breath in the course of ascent? - ANSLung over
enlargement, forces air into bloodstream and chest cavity, leading to paralysis or loss of life.
What is a opposite block? - ANSWhen air cannot escape from a air space at some stage in
ascent
How do you react to opposite block? - ANSSlow/forestall ascent and deliver air time to paintings
its way out
As you go deeper you use your air ___? - ANSfaster
Why do you put on a masks underwater? - ANSLight behaves differently in water than in air,
which influences how your eyes consciousness. Mask creates air space so your eyes can
cognizance.
When is an object undoubtedly buoyant? - ANSWhen it displaces a volume of water weighing
more than its very own weight.
When is an item negatively buoyant? - ANSWhen it displaces a quantity of water weighing less
than its personal weight.
When is an object neutrally buoyant? - ANSWhen it displaces a volume of water weighing
similar to its personal weight.
Why pieces of system do you use to control your buoyancy? - ANSBCD, Lead weight
What does buoyancy assist with when you are underwater? - ANSControlling wherein you are
What does buoyancy help with while you are at the floor? - ANSFloatation, maintaining strength
How does the buoyancy of an item differ in sparkling/salt water? - ANSMore buoyant in salt than
fresh
When you exhale what happens? - ANSLung quantity decreases so that you have much less
buoyancy.
When you inhale what takes place? - ANSLung extent will increase so you have extra buoyancy.
Why do not you experience air stress? - ANSYour frame is commonly liquid, that's
incompressible and distribute stress equally at some stage in your entire frame.
Where are a few air areas positioned within the frame? - ANSEars, sinuses, lungs
Do you usually experience the pressure in frame air spaces? - ANSOnly if the strain is
extraordinary outside and inside the air spaces.
1 bar is what depth? - ANS0m/0ft
2 bar is what depth? - ANS33ft/10m
three bar is what intensity? - ANS66ft/20m
four bar is what intensity? - ANS99ft/30m
How is air extent affected while depth is accelerated? - ANSIt decreases
, How is air density affected whilst depth is extended? - ANSIt will increase
What happens in case you take an air volume underwater with you in a flexible box or inverted
jar? - ANSAs pressure increases the quantity decreases, same air however smaller area.
How do you preserve air extent as you descend? - ANSEqualize
What is a "squeeze"? - ANSAs quantity decreases, stress pushes body tissues inwards toward
air area, inflicting pain. Pressure out of doors air area is greater than strain inner air area.
Where are you able to get a squeeze? - ANSEars, sinuses, mask, lungs, teeth
How do you equalise air areas in ears? - ANSBlow and squeeze nose, wiggle jaw, swallowing
How often should you equalise? - ANSEvery metre before discomfort
What do you do in case you sense discomfort? - ANSAscend until discomfort eases, equalise,
hold descent slowly
Why can not you scuba at the same time as unwell? - ANSCongestion can plug air passages so
that you cannot equalize
What is masks equalisation? - ANSexhale into masks by way of nose
What does your nostril need to be within the masks? - ANSTo equalize
First rule of diving - ANSAlways breathe continuously
What occurs in case you hold your breath in the course of ascent? - ANSLung over
enlargement, forces air into bloodstream and chest cavity, leading to paralysis or loss of life.
What is a opposite block? - ANSWhen air cannot escape from a air space at some stage in
ascent
How do you react to opposite block? - ANSSlow/forestall ascent and deliver air time to paintings
its way out
As you go deeper you use your air ___? - ANSfaster
Why do you put on a masks underwater? - ANSLight behaves differently in water than in air,
which influences how your eyes consciousness. Mask creates air space so your eyes can
cognizance.
