SDI OPEN WATER SCUBA DIVER EXAM QUESTIONS AND CORRECT VERIFIED ANSWERS

SDI OPEN WATER SCUBA DIVER EXAM
QUESTIONS AND CORRECT VERIFIED
ANSWERS
ObjectsA2underA2waterA2appearA2-A2Ans--CloserA2andA2largerA2thanA2theyA2doA2onA2land

HowA2muchA2fasterA2doesA2soundA2travelA2inA2water,A2comparedA2toA2air?A2-A2Ans--
4A2times

WaterA2conductsA2heatA2awayA2fromA2yourA2bodyA2-A2Ans--
25A2timesA2fasterA2thanA2airA2does

AsA2youA2descendA2-A2Ans--
colorsA2fade,A2redsA2andA2orangesA2fadeA2first,A230A2metersA2seemA2blueA2andA2gray

waterA2tempA2doesA2yourA2bodyA2needA2thermalA2protectionA2-A2Ans--86A2degrees

WhatA2doesA2SCUBAA2meanA2-A2Ans--self-containedA2underwaterA2breathingA2apparatus

WhenA2waterA2stratifiesA2itselfA2intoA2layers,A2accordingA2toA2temperature,A2theA2boundary
A2betweenA2layersA2isA2knownA2asA2a(n):
1:A2Halocline.
2:A2Ichtyocline.
3:A2Thermodyne.
4:A2Thermocline.A2-A2Ans--Thermocline

WhatA2isA2theA2primaryA2causeA2ofA2waves?A2-A2Ans--wind

WhichA2ofA2theA2followingA2factorsA2doA2weA2takeA2intoA2accountA2whenA2measuringA2wav
es?A2-A2Ans--Height,A2Length

WhichA2ofA2theA2followingA2isA2incorrect?A2-A2Ans--
WavesA2areA2notA2hazardousA2toA2diversA2duringA2shoreA2dives

TheA2consequencesA2ofA2becomingA2coldA2underA2waterA2includeA2theA2followingA2except
A2-A2Ans--improvedA2judgmentA2andA2coordination


BecauseA2soundA2travelsA2fasterA2underA2water:A2-A2Ans--
ItsA2harderA2toA2determineA2theA2directionA2fromA2whichA2aA2soundA2isA2coming

EnteringA2throughA2surfA2requiresA2specialA2skills.A2TheseA2skillsA2areA2oftenA2includedA2in
A2beginningA2scubaA2courseA2taughtA2inA2areasA2inA2whichA2surfA2entriesA2areA2commonA2-
A2Ans--true

, whichA2ofA2theA2followingA2areA2trueA2-A2Ans--SurgeA2isA2theA2back-and-
forthA2movementA2ofA2waterA2causedA2byA2passingA2overA2head

WhichA2ofA2theA2followingA2areA2trueA2-A2Ans--
TheA2sunA2warmingA2waterA2nearA2theA2equator,A2coupledA2withA2theA2earth'sA2rotation,A2i
sA2theA2primaryA2causeA2ofA2permanentA2oceanA2currents

despiteA2itsA2apparentA2warmth,A2diversA2inA2warmA2watersA2stillA2needA2toA2considerA2toA2
wearA2protectionA2-A2Ans--true

longshoreA2currentsA2alwaysA2moveA2inA2theA2sameA2directionA2asA2prevailingA2offshoreA2
currentsA2-A2Ans--false

aA2ripA2currentA2isA2aA2narrowA2flowA2ofA2swiftlyA2movingA2waterA2thatA2runsA2parallelA2toA2s
horeA2-A2Ans--false

theA2trickA2toA2dealingA2withA2surgeA2isA2toA2anticipateA2itsA2actionA2inA2orderA2toA2avoidA2c
ontactA2withA2stationaryA2objectsA2-A2Ans--true

whatA2isA2theA2mostA2effectiveA2wayA2toA2getA2outA2ofA2aA2ripA2currentA2-A2Ans--
swimA2parallelA2toA2shore,A2untilA2outA2ofA2current

theA2bestA2timeA2toA2diveA2isA2duringA2aA2slackA2tideA2-A2Ans--true

weA2poseA2greaterA2threatA2toA2underwaterA2plantsA2andA2animalsA2-A2Ans--true

whatA2causesA2mostA2marineA2lifeA2injuriesA2-A2Ans--
animalsA2defenseA2responseA2andA2mistakenA2identity

whatA2abilityA2bestA2helpsA2helpsA2youA2avoidA2damageA2toA2theA2fragileA2aquaticA2environ
mentA2-A2Ans--buoyancyA2control

allA2ofA2theA2followingA2stepsA2canA2youA2takeA2toA2avoidA2scrapesA2andA2abrasions,A2exc
ept:A2-A2Ans--wearA2minimalA2exposureA2protection

someA2aquaticA2animalsA2possessA2stingingA2cells.A2TheseA2areA2called:A2-A2Ans--
Nematocysts

marineA2animalsA2bitesA2almostA2alwaysA2theA2resultA2ofA2theA2animalA2defendingA2itselfA2-
A2Ans--true


alwaysA2stayA2withinA2yourA2levelA2ofA2experience.A2AsA2anA2openA2waterA2diverA2youA2sh
ouldA2notA2ventureA2inA2overheadA2environmentA2suchA2asA2aA2caveA2-A2Ans--true

TheA2statesA2ofA2buoyancyA2includeA2allA2ofA2theA2followingA2exceptA2-A2Ans--Passive