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A series of questions and answers related to the naui open water elearning exam. It covers various aspects of scuba diving, including physical fitness, equipment, safety procedures, and diving techniques. Useful for individuals preparing for the naui open water diver certification.
Typology: Exams
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Youishouldicheckiyourisubmersibleipressureigaugeieveryi___iminutesiini shallowiwateriandimoreifrequentlyiinideeperiwateri-iCorrectiAnswer- 5 Whichiisitheimostieffectiveiwayitoidescendiwhileimaintainingiorientatio niandiattemptingiequalizationiofitheiearsi-iCorrectiAnswer-feetifirst TheifollowingirateiofiascentiforidivingiisiacceptableiwheniusingitheiUSN/ NAUIidiveitables:i-iCorrectiAnswer- 30 ifeetiperiminute Wheniconductingiaibuoyancyicheck,ineutralibuoyancyioriproperiweighti ngiisiattainediwhen,iwithiainormalibreath,iyouifloatiatiorinear:i- iCorrectiAnswer-Eyeilevel Youidoianiemergencyiswimmingiascentiwheniyouirunioutiofiairiatishallo weridepthsi(abouti 18 imetersiori 60 ifeet).iTioriFi-iCorrectiAnswer-True Youidoiaibuoyantiemergencyiascentiwheniyouirunioutiofiairiatigreateride pths.iYouidropiyouriweightibeltiandigentlyiexhaleiallitheiwayitoitheisurfa ce.iTioriFi-iCorrectiAnswer-True Ifiduringiaidiveiyouiandiyouribuddyibecomeiseparated,iyouishould:i- iCorrectiAnswer-spendinoimoreithanioneiminuteilookingithenisurface Youishouldidivei_____iyouribuddy.i-iCorrectiAnswer-Sideibyisideiwith
Ifiyouiwaveitoisomeoneifromitheisurface,iitiisiaisigniofidistress,iNOTiaiwa yitoisayihello.iTioriFi-iCorrectiAnswer-True TheiNAUIiDivingiHandiSignalsiareistandardiinitheiUnitediStatesidivingico mmunityiandiareiusuallyirecognizediiniothericountriesiasiwell.iTioriFi- iCorrectiAnswer-True Whenidonningiyouricylinderiatitheisurfaceiandidonningiyouricylinderiun derwater,itheiprimaryidifferenceiisithatiyouiwantitoibe:i- iCorrectiAnswer- positivelyibuoyantiatitheisurfaceiandinegativelyibuoyantiatitheibottom Youimayineeditoidonioriremoveiyouriequipmentiinitheiwateriif:i- iCorrectiAnswer-ALLiOFiTHEiABOVEi--> Theiboatiyouiareiusingiisitooismallitoiallowiequipmentihandling aniitemiofigearineedsiadjusted ifiyouriscubaiunitigetsicaughtiinifishingiline Examplesiofinaturalinavigationiaidsidiversimayiuseiduringidivesiinclude:i
Aireciprocalicourseiisimadeiwheniyourioutboundicourseiisiaistraightilinei andihalfwayithroughiyouridiveiyouimakeiai_____iturn.i-iCorrectiAnswer- 180 idegrees Theifirsticolorilostiinitheispectrumiuponidescentiduringidivingiisi___.i- iCorrectiAnswer-red Aidiver'sibodyiheatiisilostithroughiconductioni(primarily)iatiairateiofiapp roximatelyi____itimesimoreirapidlyithaniiniair.i-iCorrectiAnswer- 25 Sounditravelsiabouti_____itimesifasteriiniwaterithaniiniairi- iCorrectiAnswer- 4 becauseiofirefraction,iobjectsiunderwateriappeari_____i&i_____iwhenit heidiveriisilookingithroughihisioriherimask.i-iCorrectiAnswer- larger;icloser Youribodyiweightidoesinotiaffectiyouribuoyancy.iTioriFi-iCorrectiAnswer- False Ifiyouiareidivingiwearingianiexposureisuit,iyouishouldi_____itoisafelyicon trolibuoyancyiasiyouidescend.i-iCorrectiAnswer- addiairitoiyouribuoyancyidevice
Duringidescent,iaidiver'sibuoyancyitendsitoi_____.i-iCorrectiAnswer- decrease Ifiyouiareiweighteditoibeineutraliinisaltiwateriandiyouidiveiinifreshiwateri withitheisameiamountiofiweight,iyouiwillifloat.iTioriFi-iCorrectiAnswer- False ifiaidiversisurfaceiairiconsumptionirateiisi1.72ibari(25ipsi)iperiminute,iwh atiwouldibeitheiconsumptionirateiati 20 imetersi(66ifeet)iofiseawater?i- iCorrectiAnswer-5.16ibariperiminutei(75ipsiiperiminute) aisealediballoonifillediwithiairithatihasivolumeiofi 6 icubiciinchesiati 99 ifeet iwillihaveiaivolumeiofi_____icubiciinchesiati 33 ifeeti-iCorrectiAnswer- 12 Whatitypeiofipressureiisidefinediasigaugei(water)ipressureiplusiatmosph erici(air)ipressure)?i-iCorrectiAnswer-Absolute Atmosphericipressureiatiseaileveliis:i-iCorrectiAnswer- 1.0ibari/i14.7ipoundsiperisquareiinchi/i1.0iatmosphericiabsolute Whichigasilawibestiexplainsidivingimedicaliproblemsisuchiasieariandisin usisqueeze?i-iCorrectiAnswer-Boyle'silaw Theiabsoluteipressureiinitheioceaniati 16 imetersi(53ifeet)iis:i- iCorrectiAnswer-2.6iatmospheresiabsolute
Aidepthithatiisiequivalentitoioneiatmosphereiinioceaniisiequalitoi____iini seaiwateriandi____iinifreshiwateri-iCorrectiAnswer- 10 imi(33ifeet)i;i10.4imi(34ifeet) TwoimethodsiofimeasuringiairipressureiareiBARior:i-iCorrectiAnswer- poundsiperisquareiinch Seaiwateriweighsi__ikgiperiliteriori___ipoundsipericubicifooti- iCorrectiAnswer-1.025i/i64. Pressureiinitheimiddleieariisiequalizedithroughiaipartiofitheibodyicalledit he:i-iCorrectiAnswer-eustachianitube Aidiver'siinabilityitoiequalizeihis/heriearsiduringiascenticouldicause:i- iCorrectiAnswer-aiblockiorireverseiblock Aidiveriwithibloodiandimucousiinihis/herimaskiuponisurfacingiwillimostil ikelyihavei-iCorrectiAnswer-sinusisqueeze Toipreventiairiembolism,iaidiverishouldi-iCorrectiAnswer- Breatheinormallyiatiallitimesiduringiascentiandineveriholdihis/heribreat h
Theithreeigeneralitypesiofiinjuryiresultingifromilungioverexpansioniareia iriembolism,ipneumothorax,iandi___i-iCorrectiAnswer- tissueiemphysema Aniirregularibreathingipatterni(skipibreathing)iwhileidivingiwillipossiblyi cause:i-iCorrectiAnswer-carbonidioxideiexcess Airegularibreathingipatterniwhileidivingiwouldibei-iCorrectiAnswer- slightlyisloweriandideeperithaniyouinormallyibreath Ifiitiisisuspectedithatitheiairiiniaitankiisicontaminatedidueitoiitsismelliorit aste:i-iCorrectiAnswer- Doinotiuseitheitankiandiimmediatelyicallitheidiveishopithatifilleditheitan kisoitheyicaniinvestigateitheiproblem Ifiyouridiveibuddyicomplainsitoiyouiaboutihavingiachingipainiinihis/heris houlderioneihouriafteritheidive,iyouimightisuspecti-iCorrectiAnswer- decompressionisickness Symptomsiofinitrogeninarcosisiareisimilaritoi-iCorrectiAnswer- alcoholiintoxication Aisymptomioficarbonimonoxideipoisoningiisiofteni-iCorrectiAnswer- headache
whenitheipressureiofinitrogeniisibalancedibetweenitheiairiandiyouribod y,iyouiareiatiaistateiofi_____i-iCorrectiAnswer-Equilibrium Ifitheitemperatureisurroundingiairigidicontainerifulliofigasiincreases,ithei pressureiofitheigasiincreases.iTioriFi-iCorrectiAnswer-True Theiamountiofiwaterivaporiinitheiairiisiknowniasi-iCorrectiAnswer- humidity Youicanipreventiaimaskifromifoggingiunderiwateribyiloweringithei___iofi theiwateri-iCorrectiAnswer-Surfaceitension breathingidryiair,iscubaidiversitenditoibecomeidehydratediwhileidivingi dueito:i-iCorrectiAnswer-moisturizingidryiinhalediair Ifiyouidiveideeperithaniapproximatelyi 6 imetersi(20ifeet)ianditheniascen d,itheipressureichangeimightibeisufficientiforibubblesitoiformiifiyouihave iabsorbedienoughinitrogen.iTioriFi-iCorrectiAnswer-True AiNAUIiopeniwateriscubaidiverishouldinotidiveideeperithani 18 imetersi(o ri 60 ifeet).iTioriFi-iCorrectiAnswer-True forioptimumino- decompressionibottomitimes,iplanirepetitiveidivesisoithatieachisuccessi veidiveiisitoiai_____idepthi-iCorrectiAnswer-aishallwer
Theiminimumisurfaceiintervalirecommendedibetweenitwoidivesiisi____ _____iminutes.i-iCorrectiAnswer- 60 AccordingitoitheiNAUIidiveitablesidivesitoilessithani 6 imi(20ifeet):i- iCorrectiAnswer-Areiconsiderediasi6mi(20ifoot)idives aidiveriwithiaigroupiletteriofi'F'imakingiaidiveiofi 60 ift.ihasiairesidualinitro genitimeiofi_____i-iCorrectiAnswer- 35 iminutes AccordingitoiNAUI,iairepetitiveidiveiisidefinediasimoreithanioneidiveiwit hiniaiperiodiofi_________ihours.i-iCorrectiAnswer- 24 Theimaximumidiveitimeiforiaidiveitoi 60 iftiisi____iminutesi- iCorrectiAnswer- 50 Theiminimumisurfaceiintervalirequireditoiavoididecompressioniafteriaid iveitoi88ftifori 18 iminutes,ifollowedibyiaidiveitoi 78 iftifori 23 iminutesiisi- iCorrectiAnswer- 4 ihr,i 49 iminutes Theifirstidiveiisitoi60ftifori 50 iminutes.iYouispendioneihouriandi 40 iminute sionitheisurface,iwhatiisiyouriadjustedimaximumidiveitimeiati60ft?i- iCorrectiAnswer- 4 iminutes
Itiisiadvisableithatiaisport/recreationalidiver:i-iCorrectiAnswer- Avoiditheidecompressionidives TheiNAUIiRGBMidiveitablesiareiforibothiairiandinitrox,iandicanibeiusedif orielevationsiupitoi3048mi(10,000ifeet)iaboveiseailevel.iTioriFi- iCorrectiAnswer-True ForianyigivenidivemiyouiwilliuseionlyioneiofitheiRGBMitables,ibutiitiisiess entialithatiyouibeiawareiofiandiuseitheiappropriateitable.iTioriFi- iCorrectiAnswer-True Specificirulesiforithatiparticularitableiuseiareifoundionitheibackiofieachit able.iTioriFi-iCorrectiAnswer-True Diveicomputersithoughiexpensive,ienhanceidiversisafetyibyitrackingithe iridepthianditimeimoreiaccuratelyithanicanibeiachievediwithidiveitables.i TioriFi-iCorrectiAnswer-True ComputersiandidiveitablesiwillieliminateitheiriskiofiDCS.iTioriFi- iCorrectiAnswer-False Itiisirecommendedithatiyouinoticonsumeialcoholiwithini___ihour(s)iofiai plannedidivei-iCorrectiAnswer- 12
Whichiofitheifollowingilimitsishouldibeiestablishediprioritoieveryiscubai dive?i-iCorrectiAnswer- Maximumibottomitime,imaximumidepth,iminimumiairipressure wheniplanningiandiexecutingiaidive,iitiisiimportantiforidivingibuddiesito: i-iCorrectiAnswer-agreeioniaidiveileader Immediatelyiuponireachingitheidiveisite,iyouishouldi-iCorrectiAnswer- observeiconditions Youishouldihaveiaicontingencyiplanifor:i-iCorrectiAnswer- eachistepiofiyouridiveiplan Continuedilossiofibodyiheatiinicoldiwateriwilliproduce:i-iCorrectiAnswer- ALLiOFiTHEiABOVEi--> muscleicramps progressiveiimmobility inabilityitoipain Aidiveriexperiencingipanicishouldi-iCorrectiAnswer- stop,irestiandibreatheislowlyiandideeplyiuntiliyouirecover Toirelieveiaicrampiinitheicalfi-iCorrectiAnswer- benditheitoeiofitheifinitowarditheikneeitoistretchitheimuscle
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