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SDI /
/Open /
/Water /
/Scuba /
/Diver //Exam //Questions //With //Correct //Answers
Objects /
/under /
/water /
/appear //- /
/correct //answer(s) //✔✔ //Closer //and //larger //than //they //do //on //land
How /
/much /
/faster /
/does /
/sound /
/travel //in //water, //compared //to //air? //- //correct //answer(s) //✔✔ // 4 //times
Water /
/conducts /
/heat /
/away /
/from /
/your //body //- //correct //answer(s) //✔✔ // 25 //times //faster //than //air //does
As /
/you /
/descend //- //correct //answer(s) //✔✔ //colors //fade, //reds //and //oranges //fade
//first, // 30 //meters //seem //blue //and //gray
water /
/temp /
/does /
/your /
/body //need //thermal //protection //- //correct //answer(s) //✔✔ // 86 //degrees
What //does //SCUBA //mean //- //correct //answer(s) //✔✔ //self-
contained //underwater //breathing //apparatus
When /
/water /
/stratifies /
/itself //into //layers, //according //to //temperature, //the //boundary //between
//layers //is //known //as //a(n):
1: //Halocline.
2: //Ichtyocline.
3: //Thermodyne.
4: //Thermocline. //- //correct //answer(s) //✔✔ //Thermocline
What //is //the //primary //cause //of //waves? //- //correct //answer(s) //✔✔ //wind
Which /
/of /
/the /
/following /
/factors /
/do /
/we /
/take /
/into /
/account /
/when //measuring //waves? //- //correct //answer(s) //✔✔ //Height, //Length
which //of //the //following //are //true //- //correct //answer(s) //✔✔ //Surge //is //the
//back-and-forth //movement //of //water //caused //by //passing //over //head
Which /
/of /
/the /
/following /
/are /
/true //- /
/correct /
/answer(s) /
/The /
/sun /
/warming /
/water /
/near /
/the /
/equator, /
/coupled /
/with //the //earth's //rotation, //is //the //primary //cause //of //permanent //ocean
//currents
despite /
/its /
/apparent /
/warmth, /
/divers /
/in /
/warm /
/waters /
/still /
/need //to //consider //to //wear //protection //- //correct //answer(s) //✔✔ //true
longshore /
/currents /
/always /
/move /
/in /
/the /
/same /
/direction /
/as //prevailing //offshore //currents //- //correct //answer(s) //✔✔ //false
a /
/rip /
/current /
/is //
a /
/narrow /
/flow /
/of /
/swiftly /
/moving /
/water //that //runs //parallel //to //shore //- //correct //answer(s) //✔✔ //false
the /
/trick /
/to /
/dealing /
/with //surge //is //to //anticipate //its //action //in //order //to //avoid //contact //with
//stationary //objects //- //correct //answer(s) //✔✔ //true
what /
/is /
/the /
/most /
/effective /
/way /
/to /
/get /
/out /
/of //
a /
/you /
/take /
/to /
/avoid /
/scrapes /
/and /
/abrasions, /
/except: //- //correct //answer(s) //✔✔ //wear //minimal //exposure //protection
some /
/aquatic /
/animals /
/possess /
/stinging /
/cells. //These //are //called: //- //correct //answer(s) //✔✔ //Nematocysts
marine /
/animals /
/bites /
/almost /
/always /
/the /
/result //of //the //animal //defending //itself //- //correct //answer(s) //✔✔ //true
always /
/stay /
/within /
/your /
/level /
/of /
/experience. /
/As /
/an /
/open /
/water /
/diver /
/you /
/should /
/not /
/venture /
/in /
/overhead //environment //such //as //a //cave //- //correct //answer(s) //✔✔ //true
The //states //of //buoyancy //include //all //of //the //following //except //- //correct
//answer(s) //✔✔ //Passive
a /
/scuba /
/cylinder /
/that /
/normally /
/lasts /
/one //hour //at //the //surface //will //last //___ //minutes //at // 20 //meters //- //correct
//answer(s) //✔✔ // 20
If /
/you /
/feel /
/pain /
/or /
/discomfort /
/in /
/your /
/ears /
/during /
/descent //- /
/correct /
/answer(s) /
/✔✔ //ascend //to //the //point //where //you //can //comfortably //equalize
The /
/single /
/most /
causes /
/extreme /
/headache /
/and /
/nausea, //may //cause //the //lips //and //fingernail //beds //to //turn //bright //red //-
//correct //answer(s) //✔✔ //Carbon //Monoxide
A //mask //must //cover //the //nose:
A. //To //prevent //water //from //entering.
B. //To //ensure //the //best //possible //fit.
C. /
/So /
/that /
/you /
/can /
/keep //the //pressure //inside //the //mask //equal //to //the //pressure //outside.
D. /
/Both /
/the /
/first /
/and /
/second /
/answers /
/are //correct. //- //correct //answer(s) //✔✔ //Both //first //and //second //answers
the /
/type /
/of /
/fins /
/commonly /
/used /
/by /
/recreational /
/scuba /
/divers //include //- //correct //answer(s) //✔✔ //full //foot //fins, //open //heel
Basic //post-dive //equipment //maintenance //and //care //includes //- //correct
//answer(s) /
/rinsing /
/with /
/fresh /
/water, /
/allowing /
/to //completely //dry, //store //in //cool //and //dry //place: //all //the //above
common //exposure //suit //types //- //correct //answer(s) //✔✔ //dive //suits, //wet
//suits, //dry //suits: //all //the //above
Your //body //loses //the //greatest //amount //of //heat //through //the: //- //correct
//answer(s) //✔✔ //head
common /
/bcd /
/components /
/include /
/all /
/the /
/following //except //- //correct //answer(s) //✔✔ //CO2 //inflation //mechanism
Common //weight //systems //include:
A. //Weight //belts.
B. //BCs //with //integrated //weight //systems.
C. //Cylinders //with //weights //permanently //affixed //to //the //boot.
D. /
/Both /
/the /
/first /
B. //Anticorrosive //recoating.
C. //Visual //inspections.
D. /
/Both /
/the /
/first /
/and /
/third /
/answers /
/are /
/correct. //- //correct //answer(s) //✔✔ //First //and //third //answers //are //correct
the /
/minimum /
/information /
/most /
/dive /
/computers /
/provide /
/you /
/with /
/while /
/in /
/dive /
/mode //- /
/correct /
/answer(s) /
/current /
/and /
/max /
/depth, //actual //bottom //time, //decompression //status: //all //the //above
Steps /
/in //equipment //assembly //include //all //of //the //following //except //- //correct
//answer(s) //✔✔ //depressurize //system //and //test //regulators
what /
/piece /
/of /
/equipment /
/should /
/never /
/be /
/allowed /
/to /
/dangle /
/freely //- /
/correct /
/answer(s) //✔✔ //alternative //air //source, //submersible //pressure //gauge
which /
/is /
/the /
/most /
/common //boat //entry //technique //- //correct //answer(s) //✔✔ //Giant //stride
Before //you //can //remove //the //regulator //from //your //scuba //cylinder, //you
//must: //- /
/correct /
/answer(s) /
/turn /
/air /
/all /
/the /
/way /
/off, /
/make /
/sure //low //pressure //inflator //hoes //remains //connected //to //BC //power
/should /
/form //
a //seal //by: //- //correct //answer(s) //✔✔ //pushing //in //at //the //top //and //sides
Having /
/just /
/enough /
/weight /
/to /
/achieve /
/all /
/thee /
/states /
/of /
/buoyancy /
/with /
/only /
/minor /
/adjustments //in //the //water //- //correct //answer(s) //✔✔ //Proper //weighting
Among /
/the /
/key /
/points /
/in //using //your //BC //to //help //maintain //neutral //buoyancy //under //water:
A. /
/Add /
/or /
/remove /
/air /
/to /
/or /
/from /
/your /
/BC /
/only //in //large //bursts, //until //you //develop //a //more //intuitive //feel //for //the
//process.
B. /
/To /
/be /
/successful //in //maintaining //neutral //buoyancy, //you //must //be: //aware //of
//changes //in //depth,
and, /
/anticipate /
/the /
/need /
/to //add //or //vent //air //from //your //BC //by //keeping //a //hand //on //the //inflator.
C. //Before //you //can //achieve //neutral //buoyancy, //you //must //first //assume
//a //finpivot //position //on //the
bottom.
D. //None //of //the //above. //- //correct //answer(s) //✔✔ //B
If /
/your /
/buoyancy /
/is //under //control, //you //should //be //able //to //hover //at //any //time //by:
A. //Adding //just //a //single //puff //of //air //to //your //BC.
B. //Inhaling //deeply.
C. //Not //kicking //or //moving.
D. /
/Both /
/the //first //and //second //answers //are //correct. //- //correct //answer(s) //✔✔ //C
Among //the //key //points //in //doing //a //flutter //kick:
A. //Keep //your //knees //as //straight //as //possible.
B. //Emulate //the //leg //movements //you //make //when //pedaling //a //bicycle.
C. //Key //your //toes //pointed.
An //independent //emergency //ascent //may //be //the //best //response //to //an
//out-of-
air /
/situation //- /
/correct //answer(s) //✔✔ //if //the //surface //is //closer //than //a //buddy
techniques /
/commonly /
/used /
/to /
/navigate /
/under /
/water /
/include //- //correct //answer(s) //✔✔ //Natural //and //Compass //navigation
Always //dive //within //the //limits //of //your: //
A. //Training.
B. //Equipment.
C. //Experience.
D. //All //of //the //above. //- //correct //answer(s) //✔✔ //D
Activities /
/that /
/may /
/increase /
/the //risk //of //decompression //sickness //- //correct //answer(s) //✔✔ //Training
//and //experience
among /
/the /
/things /
/dive /
/buddies /
/must /
/agree /
/upon /
/prior /
/to /
/dive //- /
/correct /
/answer(s) /
/depth /
/and /
/time //limits, //planned //activities, //procedure //to //follow //if //separated: //all
//the //above
If /
/you /
/become /
/separated /
/from /
/your /
/buddy /
/search /
/for /
/them /
/no //mare //than //_____ //then //surface //- //correct //answer(s) //✔✔ //one //minute
Dive //planning //elements //may //include //all //of //the //following //except:
A. //Purpose //of //dive. //
B. //Notifying //a //third //party //of //your //plans. //
C. //Reviewing //hand //signals.
D. //Deciding //whose //computer //to //follow. //- //correct //answer(s) //✔✔ //D
On //most //repetitive //dives, //your //compute //will //provide //____ //no-
decompression /
/limits /
/than //on //single //dives //- //correct //answer(s) //✔✔ //More //conservative
