Padi, Open Water Diver, Final Exam Review Questions And Answers

PADI, OPEN WATER DIVER, FINAL
EXAM REVIEW QUESTIONS AND
ANSWERS

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atyisyneutrallyybuoyantyinyfreshywaterywouldyfloatyinysaltywaterybecauseythereyis
ygreateryupwardyforce.y

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sameyobjectyplacedyintoysaltywaterywould

Aysink.
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Cydoynothing.
Dyfloat.

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ey(moleculesymoveycloserytogether).

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usesytheydensityyofytheyairyinsideytoyincreaseyandyairymoleculesyareypushedyclo
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ygreater.y

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AyTheyballoonywillygetybiggeryandytheyairyinsideytheyballoonywillybeylessydense
y(moleculesymoveyfurtheryapart).
ByTheyballoonywillygetysmalleryandytheyairyinsideytheyballoonywillybeymoreydens
ey(moleculesymoveycloserytogether).
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e.
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.

,Aybecomeyhalfytheysizeyitywasyatytheysurface.

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nyIytakeytheyglassydownytoy10ymeters.yTheyairyspaceywould

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Dybecomey2/3ytheysizeyitywasyatytheysurface.

CyAycold,yallergyyoryanotherymedicalyproblem.

Aycold,yoryanyycongestion,ycanyblockyairypassagesyinyyouryearsyandysinuses,ym
akingyequalizationydifficultyoryimpossible.y

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4)yIfyIyamynotyableytoyequalizey(clear)ymyybodyyairyspaces,yitymayybeybecause
yIyhave

Ayseasickness.
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Cyaycold,yallergyyoryanotherymedicalyproblem.
Dyanxiety.

CyIyamyfeelingyaysqueezeyandyneedytoyequalize.

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ntyandyascendyslightlyytoyrelieveypressureyonyyouryears.yThenyattemptytoyequali
zeyagain.yIfyyouycan'tyequalize,yendytheydive.y

SeeyBeingyayDiveryIy-
yTheyEffectsyofyIncreasingyPressureyonyBodyyAirySpaces.y-yans-
5)yIfymyyearsyorysinusesyhurtywhileyIyamydescendingy(goingydown),yityusuallyym
eans

Aymyyairyspacesyareyequalized.
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, ByInytheytriangleyareayformedybyymyychinyandytheylowerycornersyofymyyribycag
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SeeyEquipmentyIy-yRegulators.y-yans-
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y
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DyHoldingymyybreathywhileyscubaydiving.

Blockingyoffyyourylungsybyyholdingyyourybreathyandyascendingycouldycauseythem
ytoyoverexpandyandyrupture,ywhichyisyayseriousyinjuryythatycouldyresultyinyparaly
sisyandydeath.yBreathingycontinuouslyywhileyscubaydivingykeepsyairypassagesyop
enyallowingyexpandingyairytoyescape.y

SeeyBeingyayDiveryIy-
yTheyEffectsyofyDecreasingyPressureyonyBodyyAirySpaces.y-yans-
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y
Ayscubaydivingywithoutyaybuddy.
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Cynotydrinkingyenoughywaterybeforeyscubaydiving.
Dyholdingymyybreathywhileyscubaydiving.

By20yminutes

60/3=20

Foryeachy10ymetersyweygoydown,yweyhaveyoneymoreyatmosphereyofypressure.y
Also,yrememberytoyaddyinythey1yatmosphereyofypressureyatytheysurface.

So,ygoingydownytoy20ymeters,yweywillyhavey2yatmy+y1yatmy=y3yatmyofypressu
re.y-yans-
8)yIfymyycylinderyofyairylastsy60yminutesywhileyIyamyatytheysurfaceybreathingyn
ormally,yassumingyallyelseyisytheysame,yhowylongywillyitylastyaty20ymetersybreat
hingynormally?

Ay60yminutes