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Scuba AFS 270 SDI Midterm Exam Questions With 100% Correct Answers 2024
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Scuba AFS 270 SDI Midterm Exam Questions With 100% Correct Answers SDI Exam Questions 2024 SDI Exam Answers 2024 SDI Exam SDI Exam 2024 Questions And Answers Pdf Download SDI Exam 2024 Questions SDI Exam 2024 Answers SDI Exam 2024 Pdf Download Free SDI 2024 Exam Questions And Answers SDI 2024 Exam...

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  • September 30, 2024
  • 45
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • scuba afs 270 sdi midterm
  • objects underwater appear and than they do
  • as you descend 1 colors will remain largely the
  • water conducts heat away from your body x as f

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  • SDI
  • SDI

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Scuba AFS 270 SDI Midterm Exam Questions
With 100% Correct Answers

objectsiiunderwateriiappearii___iiandii___iithaniitheyiidoiioniilandii-
iiCorrectiiAnswer-closeriiandiilarger




Asiiyouiidescend:
1:iiColorsiiwilliiremainiilargelyiitheiisame.
2:iiBluesiiandiigraysiidisappeariiquickly.
3:iiDiveiilightsiihaveiilittleiieffectiioniiapparentiicolor.
4:iiNoneiiofiitheiiabove.ii-iiCorrectiiAnswer-4ii(noneiiofiitheiiabove)


Wateriiconductsiiheatiiawayiifromiiyouriibodyii____xiiasiifastiiasiiairiidoesii-
iiCorrectiiAnswer-25x




Wheniiwateriistratifiesiiitselfiiintoiilayers,iiaccordingiitoiitemperature,iithei
iboundaryiibetweeniilayersiiisiiknowniiasiia(n):ii-iiCorrectiiAnswer-

thermocline


Whichiiofiitheiifollowingiiis/areiitrue?
1:iiTidesiicaniimakeiitheiiwateriiatiiaiiparticulariidiveiisiteiinoticeablyiideepe
riioriishalloweriithaniiyouiimayiihaveiiexperiencediipreviously.
2:iiTidaliicurrentsiicaniibeiiveryiistrong,iimakingiidivingiidifficultiioriieveniida
ngerous.

,3:iiStrongiitidaliicurrentsiicaniihaveiianiiadverseiieffectiioniivisibility.
4:iiAlliiofiitheiiabove.ii-iiCorrectiiAnswer-4ii(alliiofiitheiiabove)


Whichiiofiitheiifollowingiiis/areiitrue?
1:iiWateriiconductsiiheatiiawayiifromiiyouriibodyiiteniitimesiifasteriithaniiai
riidoes.
2:iiWateriiconductsiiheatiiawayiifromiiyouriibodyii25iitimesiifasteriithaniiairii
does.
3:iiFreshiiwateriiconductsiiheatiiawayiifromiiyouriibodyiifasteriithaniisaltiiw
ateriidoes.
4:iiSaltiiwateriiconductsiiheatiiawayiifromiiyouriibodyiifasteriithaniifreshiiwa
teriidoes.ii-iiCorrectiiAnswer-
2ii(Wateriiconductsiiheatiiawayiifromiiyouriibodyii25iitimesiifasteriithaniiairii
does)


Theiipresenceiiofiithermoclinesiimeansiithat:
1:iiSurfaceiitemperaturesiiwilliiprovideiidiversiiwithiiaiigoodiiindicationiiofii
whatiitheyiicaniiexpectiiatiidepth.
2:iiDiversiimayiirequireiilessiiiniitheiiwayiiofiiexposureiiprotectioniiatiidepthii
thaniitheyiiwilliiatiitheiisurface.
3:iiDiversiimayiirequireiimoreiiiniitheiiwayiiofiiexposureiiprotectioniiatiidept
hiithaniitheyiiwilliiatiitheiisurface.
4:iiNoneiiofiitheiiabove.ii-iiCorrectiiAnswer-
3ii(Diversiimayiirequireiimoreiiiniitheiiwayiiofiiexposureiiprotectioniiatiidept
hiithaniitheyiiwilliiatiitheiisurface)

,Whichiiofiitheiifollowingiistatementsiiareiitrue?
1:iiWaveiiheightiiisiitheiidistanceiifromiiitsiihighestiipointii(crest)iitoiiitsiilow
estiipointii(trough).
2:iiWaveiilengthiiisiitheiidistanceiifromiicrestiitoiicrest.
3:iiWaveiioscillationiitoiicalculatediibyiimultiplyingiitheiiwaveiiheightiitime
siiitsiilength.
4:iiBothiitheiifirstiiandiisecondiianswersiiareiicorrect.ii-iiCorrectiiAnswer-
4ii(bothiitheiifirstiiandiisecondiianswersiiareiicorrect)


TRUEiiORiiFALSE:iiIniigeneral,iitheiibestiitimeiitoiidiveiiisiiduringiislackiitide,iit
heiiperiodiibetweeniihighiiandiilowiitides.ii-iiCorrectiiAnswer-TRUE


TRUEiiORiiFALSE:iiTheiisuniiwarmingiiwateriineariitheiiequator,iicouplediiwi
thiitheiiearth'siirotation,iiisiitheiiprimaryiicauseiiofiipermanentiioceaniicurr
ents.ii-iiCorrectiiAnswer-True


T/F
Aiiwaveiiencounteringiishallowiiwateriibeginsiitoiislowiiatiiitiibottom,iiwhil
eiitheiitopiiofiitheiiwaveiicontinuesiiatiiitsiipreviousiispeed.iiThisiicausesiitheii
waveiitoiibreak.ii-iiCorrectiiAnswer-true


Whichiiofiitheiifollowingiistatementsiiis/areiitrue?
1:iiAiiripiicurrentiiisiiaiinarrowiiflowiiofiiswiftlyiimovingiiwateriithatiirunsiiper
pendiculariitoiishore.

, 2:iiRipiicurrentsiiformiiwheniiwateriiflowingiioutiitoiiseaiiisiifunnelediithrou
ghiiaiinarrowiirestriction,iisuchiiasiitwoiisandbarsiioriiaiibreakiiiniiaiicoraliiree
f.
3:iiTheiiforceiiofiiaiiripiicurrentiigenerallyiidiminishesiiiniideeperiiwater,iinoti
ifariibeyondiitheiisurfiizone.


4:iiAlliiofiitheiiabove.ii-iiCorrectiiAnswer-Alliiofiitheiiabove


Whichiiofiitheiifollowingiiis/areiitrue?
1:iiSurgeiiisiitheiibackwashiiofiiwateriifromiiwavesiibreakingiioniishore.
2:iiSurgeiiisiitheiiback-and-
forthiimovementiiofiiwateriicausediibyiiwavesiipassingiioveriihead.
3:iiSurgeiioccursiiwheniiwavesiiforceiiwateriibetweeniifacingiirockiiledges.
4:iiNoneiiofiitheiiabove.ii-iiCorrectiiAnswer-2ii(Surgeiiisiitheiiback-and-
forthiimovementiiofiiwateriicausediibyiiwavesiipassingiioveriihead.)


Whichiiofiitheiifollowingiibestiidescribesiitheiiformationiiofiisurf?
1:iiWavesiienergy,iireboundingiifromiiitsiiimpactiiwithiishore,iicrashesiiintoi
ioncomingiiwaves,iicausingiithemiitoiibreak.


2:iiEnteringiishallowiiwateriiforcesiiwaveiienergyiiupward,iimakingiitheiiwa
veiicrestiiunstableiiandiicausingiiitiitoiibreak.
3:iiAiiwaveiiencounteringiishallowiiwateriibeginsiitoiislowiiatiiitsiibottom,iiw
hileiitheiitopiiofiitheiiwaveiicontinuesiiatiiitsiipreviousiispeed.iiThisiicausesiit
heiiwaveiitoiibreak.
4:iiAsiiwavesiienteriishallowiiwater,iitheiidistanceiibetweeniiwaveiicrestsii(
waveiilength)iishortens,iiincreasingiitheiitendencyiitoiibreak.ii-

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