NET-DIVER SCHOOL FINALCHECK
[Dive Equipment]
Q.1 We use weights to [ ].
Acontrol our rate of ascent
Bto offset buoyancy
Cstabilize our underwater position
Dto remain at the ocean floor
non-answer
Bto offset buoyancy
Cstabilize our underwater position
Dto remain at the ocean floor
non-answer
Q.2 [ ] is the gas inside scuba tanks.
Aatmospheric air
Bartificial air produced underwater
Cnitrogen
Doxygen
non-answer
Bartificial air produced underwater
Cnitrogen
Doxygen
non-answer
Q.3 This type of fin is easiest to use.
Aexpensive
Bhas propulsive power
Cdepends on your strength and how you fin kick
Dsturdy
non-answer
Bhas propulsive power
Cdepends on your strength and how you fin kick
Dsturdy
non-answer
Q.4 Because the buoyancy of an aluminum tank underwater is [ ] than a steel tank, it’s important to [ ] and always be aware of the type of tanks used.
Alesser / choose a suitable diving suit
Bgreater / adjust weighting
Cgreater / choose a suitable diving suit
Dlesser / adjust weighting
non-answer
Bgreater / adjust weighting
Cgreater / choose a suitable diving suit
Dlesser / adjust weighting
non-answer
Q.5 After using a tank, it is good to [ ].
Alet out all remaining air
Brefill with oxygen
Cleave remaining air
Drefill with water
non-answer
Brefill with oxygen
Cleave remaining air
Drefill with water
non-answer
Q.6 The 3-item snorkel set consists of [ ].
Awetsuit, fin, mask
Bwetsuit, BC, tank
Cmask, fin, glove
Dsnorkel, mask, fin
non-answer
Bwetsuit, BC, tank
Cmask, fin, glove
Dsnorkel, mask, fin
non-answer
Q.7 We use a BC for [ ].
Abuoyancy control
Bprotection of our upper body
Cwarmth retention
Ddrifting
non-answer
Bprotection of our upper body
Cwarmth retention
Ddrifting
non-answer
Q.8 What makes a good wetsuit?
Acolorful
Bstretches easily because it is thin
Ccheap to rent
Dcustom-made to provide optimum thermal protection
non-answer
Bstretches easily because it is thin
Ccheap to rent
Dcustom-made to provide optimum thermal protection
non-answer
Q.9 We use underwater lights [ ].
Aonly when it’s raining
Bonly during the day
Conly during the night
Dduring both day and night
non-answer
Bonly during the day
Conly during the night
Dduring both day and night
non-answer
Q.10 When you’ve finished your dive, it is good for your equipment to [ ].
Awash with salt water, and let dry
Bwash with fresh water, and dry in the sun
Cwash with fresh water, and dry in the shade
Dlet it dry
non-answer
Bwash with fresh water, and dry in the sun
Cwash with fresh water, and dry in the shade
Dlet it dry
non-answer
Q.11 Be careful that the [ ] is tightened when washing your regulator.
Apurge button
Byoke screw
Cdust cap
Dhose protector
non-answer
Byoke screw
Cdust cap
Dhose protector
non-answer
Q.12 When you go to dive, you do not forget to being C-CARD and [ ] with you.
ATriggerfish
BLog Book
CEmergency foods
DRecompression Chamber
non-answer
BLog Book
CEmergency foods
DRecompression Chamber
non-answer
[Underwater Environment]
Q.13 To penetrate [ ] require special training.
Acaves and sunken wrecks
Bdrop-offs
Crocky areas and coral reefs
Dsandy and rocky areas
non-answer
Bdrop-offs
Crocky areas and coral reefs
Dsandy and rocky areas
non-answer
Q.14 A drop-off is [ ].
Athe beginning of the ocean bottom’s bedrock
Ba protruding rock
Cbottomless, deep ocean
Dwhat appears to be like a vertical wall
non-answer
Ba protruding rock
Cbottomless, deep ocean
Dwhat appears to be like a vertical wall
non-answer
Q.15 Thermoclines are caused [ ].
Awhen water temperature lowers
Bwhen water temperature rises
Cby poor clarity
Dwhen waters of different temperature meet
non-answer
Bwhen water temperature rises
Cby poor clarity
Dwhen waters of different temperature meet
non-answer
Q.16 Divers need to watch their footing in the [ ] that is close to shore.
Asurf zone
Bland breeze zone
Csandy areas
Docean breeze zone
non-answer
Bland breeze zone
Csandy areas
Docean breeze zone
non-answer
Q.17 These are attracted to light.
Ashark
Bneedlefish/garfish
Ctriggerfish
Dbarracuda
non-answer
Bneedlefish/garfish
Ctriggerfish
Dbarracuda
non-answer
Q.18 If you encounter a dangerous sea creature, it is best to [ ].
Aattack it with a knife
Bescape quickly
Cdo nothing to provoke its natural defensive response of attack
Dfeed it bait
non-answer
Bescape quickly
Cdo nothing to provoke its natural defensive response of attack
Dfeed it bait
non-answer
Q.19 There is a period during ebb tide and high tide when the tidal current stops. This is [ ].
Astop tide
Bslack tide
Ctide pool
Dhalf tide
non-answer
Bslack tide
Ctide pool
Dhalf tide
non-answer
Q.20 This is a shellfish, but one that possesses a strong, poisonous needle.
Amoray eel
Babalone
Cturban shell
Dcone shell
non-answer
Babalone
Cturban shell
Dcone shell
non-answer
Q.21 We need to take care near this sea creature, which, possessing deadly poison in spines along its back, perfectly mimics its surroundings.
Awasp scorpionfish
Bsea catfish
Cjellyfish
Dstonefish/devilfish
non-answer
Bsea catfish
Cjellyfish
Dstonefish/devilfish
non-answer
Q.22 Rip currents cause [ ], and so are very dangerous.
Asurge
Bbottom jolting
Cstrong current
Dundertow
non-answer
Bbottom jolting
Cstrong current
Dundertow
non-answer
[Underwater Physiology]
Q.23 Underwater, things appear [ ].
Asmaller and closer
Bbigger and closer
Csmaller and farther
Dbigger and farther
non-answer
Bbigger and closer
Csmaller and farther
Dbigger and farther
non-answer
Q.24 When you are neither sinking or ascending, you have achieved [ ].
Aneutral buoyancy
Bmiddle buoyancy
Cmiddle layer buoyancy
Dbalance
non-answer
Bmiddle buoyancy
Cmiddle layer buoyancy
Dbalance
non-answer
Q.25 At a depth of 10m, gas volume is [ ] on land.
A1/2 of that
Btwice that as
C1/3 of that
Dthe same as
non-answer
Btwice that as
C1/3 of that
Dthe same as
non-answer
Q.26 If pressure doubles, gas volume becomes [ ].
A4 times greater
B1/2
C1/4
D2 times greater
non-answer
B1/2
C1/4
D2 times greater
non-answer
Q.27 It is a good idea to [ ] when diving.
Atake big, slow breaths
Btake small, slow breaths
Ctake big, fast breaths
Dtake small, fast breaths
non-answer
Btake small, slow breaths
Ctake big, fast breaths
Dtake small, fast breaths
non-answer
Q.28 When hearing underwater, the direction of sound is [ ].
Aalways below
Bdifficult to know
Calways above
Deasy to know
non-answer
Bdifficult to know
Calways above
Deasy to know
non-answer
Q.29 You should [ ] once you notice you’re experiencing nitrogen narcosis.
Asafely ascend to a shallower depth
Bstop any movement
Ctake a big, slow breath
Dmake a decompression stop
non-answer
Bstop any movement
Ctake a big, slow breath
Dmake a decompression stop
non-answer
Q.30 If you hold your breath while ascending, you’re in danger of experiencing [ ].
Alung squeeze
Ba lung over-expansion injury
Cdizziness
Dblackout
non-answer
Ba lung over-expansion injury
Cdizziness
Dblackout
non-answer
Q.31 Atmospheric air consists of [ ]% oxygen, [ ]% nitrogen, and about 1% other gases.
A51 / 48
B41 / 58
C21 / 78
D71 / 28
non-answer
B41 / 58
C21 / 78
D71 / 28
non-answer
Q.32 Underwater, as air density is [ ], breathing resistance [ ].
Alower / increases
Bhigher / decreases
Chigher / increases
Dlower / decreases
non-answer
Bhigher / decreases
Chigher / increases
Dlower / decreases
non-answer
Q.33 When snorkeling, excess hyperventilation [ ].
Ashould be your goal
Bis sometimes done
Cis necessary
Dshould never be done
non-answer
Bis sometimes done
Cis necessary
Dshould never be done
non-answer
Q.34 Squeeze can occur when/due to [ ].
Amaking a descent
Bcold water temperature
Cmaking an ascent
Dpoor physical condition
non-answer
Bcold water temperature
Cmaking an ascent
Dpoor physical condition
non-answer
Q.35 Reverse block can occur when/due to [ ].
Ahunger
Bwarm water temperature
Cmaking an ascent
Dmaking a descent
non-answer
Bwarm water temperature
Cmaking an ascent
Dmaking a descent
non-answer
Q.36 To prevent reverse block in your middle ear or sinus cavities, you should [ ].
Acomplete a mask clear
Bmaintain your health
Climit your time diving at depth
Dlimit your diving time
non-answer
Bmaintain your health
Climit your time diving at depth
Dlimit your diving time
non-answer
[Plan and Rules]
Q.37 When it comes to diving, the most important thing to keep in mind is [ ].
Abeing adventurous
Bseeing marine life
Csafety
Dhaving the best gear
non-answer
Bseeing marine life
Csafety
Dhaving the best gear
non-answer
Q.38 The best dive plans [ ]safety stops.
Aare also fine if they have
Bprohibit
Cavoid if at all possible
Dshould have
non-answer
Bprohibit
Cavoid if at all possible
Dshould have
non-answer
Q.39 For dive plans, the ideal remaining tank pressure after a dive is at least [ ].
A0 bar
B50 bar
C100 bar
D20 bar
non-answer
B50 bar
C100 bar
D20 bar
non-answer
Q.40 The ideal surface interval time is [ ].
Aat least 1 hour
Bat least 3 hours
Cat least 10 minutes
Dshort
non-answer
Bat least 3 hours
Cat least 10 minutes
Dshort
non-answer
Q.41 If you become separated from your buddy or group while diving, you should [ ].
Asafely ascend to the surface
Bexit the water
Cact according to the plan you discussed and decided upon in your pre-dive planning
Dbegin an underwater search
non-answer
Bexit the water
Cact according to the plan you discussed and decided upon in your pre-dive planning
Dbegin an underwater search
non-answer
Q.42 This is very important for maintaining good health for diving.
Ahaving a great suntan
Bbeing well-rested
Chaving some drinks the night before
Dbeing on a diet
non-answer
Bbeing well-rested
Chaving some drinks the night before
Dbeing on a diet
non-answer
Q.43 The best dive plans [ ] decompression stops.
Aare also fine if they have
Bshould have
Cprohibit
Davoid if at all possible
non-answer
Bshould have
Cprohibit
Davoid if at all possible
non-answer
Q.44 When repetitive diving, dives from the second onwards should be planned [ ].
Agradually shallower
Bequally as deep as the previous dive
Cat a different depth
Dgradually deeper
non-answer
Bequally as deep as the previous dive
Cat a different depth
Dgradually deeper
non-answer
Q.45 It is necessary to review hand signals before a dive with [ ].
Aall members in the group
Byour dive leader
Csome individuals
Dyour dive buddies
non-answer
Byour dive leader
Csome individuals
Dyour dive buddies
non-answer
Q.46 If a diver who was category “E” has had a 1-hour, 30-minutes Surface Interval, and dives again, this time to depth of 15m, what is the Residual Nitrogen Time [ minutes ].
A51
B32
C13
D64
non-answer
B32
C13
D64
non-answer
Q.47 The No-decompression dive limit for a depth of 18m is [ ] minutes.
A64
B40
C30
D50
non-answer
B40
C30
D50
non-answer
Q.48 The hand signal on the right indicates [ ].
AAscend
BThat’s really big
CDescend
DOk!
non-answer
BThat’s really big
CDescend
DOk!
non-answer
Q.49 When you haven’t been diving for a long period of time, it’s good to [ ].
Abe well-rested
Btake a refresher course
Cbuy a dive computer
Ddrink little alcohol
non-answer
Btake a refresher course
Cbuy a dive computer
Ddrink little alcohol
non-answer
Q.50 The hand signal on the right indicates [ ].
AI’m having problems equalizing my ears
BI understand
CMe/My
DI can’t hear
non-answer
BI understand
CMe/My
DI can’t hear
non-answer
Q.51 You dived for 30 minutes at 18m.Which letter category are you in your dive table calculations?
AE
BD
CF
DG
non-answer
BD
CF
DG
non-answer
Q.52 If a diver who was category “E” has had a 1-hour, 30-minutes Surface Interval, and dives again, this time to depth of 15m, what is the new no-decompression dive time [ minutes ]?
A64
B32
C51
D13
non-answer
B32
C51
D13
non-answer
Q.53 When ocean conditions, etc, change and present possible dangers, the dive plan [ ].
Ais fine as is
Bshould be adapted accordingly
Cshould be submitted to the Coast Guard
Dshould be submitted to the police
non-answer
Bshould be adapted accordingly
Cshould be submitted to the Coast Guard
Dshould be submitted to the police
non-answer
Q.54 If a diver who was category “E” has had a 1-hour, 30-minutes Surface Interval, and dives again, this time for 35 minutes to depth of 15m, which letter category are you in your dive table calculations?
AF
BG
CD
DE
non-answer
BG
CD
DE
non-answer
Q.55 Never ascend any faster than [ ].
A15cm / minutes
B18m / minutes
C10m / minutes
D10km / minutes
non-answer
B18m / minutes
C10m / minutes
D10km / minutes
non-answer
[Diving Skills]
Q.56 Be careful of [ ] getting into your mask when fitting it.
Aair
Bnose
Ceyebrows
Dhair
non-answer
Bnose
Ceyebrows
Dhair
non-answer
Q.57 In general, when descending we [ ].
Abreathe and equalize our ears
Bequalize our ears and perform a mask blow
Cmake a decompression stop and perform a mask blow
Dperform a mask clear and equalize our ears
non-answer
Bequalize our ears and perform a mask blow
Cmake a decompression stop and perform a mask blow
Dperform a mask clear and equalize our ears
non-answer
Q.58 By dropping your [ ] and using the buoyancy of your dive suit, you can complete the free ascent method of ascending.
Amask
Bweight belt
Cwill to live
Dfins
non-answer
Bweight belt
Cwill to live
Dfins
non-answer
Q.59 When entering the water, we ensure our BC [ ].
Ahas sufficient air to provide buoyancy at the surface
Bis unfastened
Chas weights in its pockets
Dhas had the air exhausted
non-answer
Bis unfastened
Chas weights in its pockets
Dhas had the air exhausted
non-answer
Q.60 When performing a mask clear, you press on the [ ] of the mask’s frame and slowly blow air from your [ ].
Abottom / nose
Bbottom / mouth
Ctop / mouth
Dtop / nose
non-answer
Bbottom / mouth
Ctop / mouth
Dtop / nose
non-answer
Q.61 With ideal weighting, you should be where your eyes are parallel to the water’s surface [ ] and sink to the top of your head [ ]. Avoid dangerous overweighting.
Awhen inhaling / when exhaling
Bbefore diving / after diving
Cwhen exhaling / when inhaling
Dbefore eating / after eating
non-answer
Bbefore diving / after diving
Cwhen exhaling / when inhaling
Dbefore eating / after eating
non-answer
Q.62 Octopus breathing and buddy breathing are both techniques for receiving [ ].
Anitrogen
Bcourage
Cair
Dhand signals
non-answer
Bcourage
Cair
Dhand signals
non-answer
Q.63 If this changes, it is necessary to adjust your buoyancy.
Adepth
Bweather
Cwater temperature
Dwater clarity
non-answer
Bweather
Cwater temperature
Dwater clarity
non-answer
Q.64 If you panic, stop moving, [ ] a few times, and regain your composure.
Adeeply breathe
Binflate your BC
Cclear your mask
Dpray
non-answer
Binflate your BC
Cclear your mask
Dpray
non-answer
Q.65 When setting up our equipment, after tightening the tank belt we hold the [ ] and shake it back and forth to test how tight the hold is.
Aweight belt
Bregulator
CBC
Dpressure gauge
non-answer
Bregulator
CBC
Dpressure gauge
non-answer
Q.66 When ascending, we slowly turn 360 degrees while [ ].
Aexhausting air from our BC
Bholding our breath
Cclearing our mask
Dmaintaining the air in our BC
non-answer
Bholding our breath
Cclearing our mask
Dmaintaining the air in our BC
non-answer
Q.67 If you get a leg cramp while diving, grasp your [ ] in order to stretch out your muscles.
Aheel
Bfinger
Cfin tip
Dknees
non-answer
Bfinger
Cfin tip
Dknees
non-answer
Q.68 We can do this technique with our breath to complete both a regulator clear and a snorkel clear.
Abreathe naturally
Bstop breathing
Cinhale
Dexhale
non-answer
Bstop breathing
Cinhale
Dexhale
non-answer
Q.69 A tank that has been set up with BC and regulator should be [ ].
Aset floating in the ocean
Bplaced standing on an even surface
Cput on
Dplaced laying down
non-answer
Bplaced standing on an even surface
Cput on
Dplaced laying down
non-answer
Q.70 When you slowly open the tank valve, the pressure gauge [ ].
Ashould be placed so you can see
Bshould be turned downwards
Csinks underwater
Dshould be turned upwards
non-answer
Bshould be turned downwards
Csinks underwater
Dshould be turned upwards
non-answer