NET-DIVER SCHOOL FINALCHECK
[Dive Equipment]
Q.1 The 3-item snorkel set consists of [ ].
Awetsuit, BC, tank
Bwetsuit, fin, mask
Cmask, fin, glove
Dsnorkel, mask, fin
non-answer
Bwetsuit, fin, mask
Cmask, fin, glove
Dsnorkel, mask, fin
non-answer
Q.2 What makes a good wetsuit?
Acolorful
Bstretches easily because it is thin
Ccustom-made to provide optimum thermal protection
Dcheap to rent
non-answer
Bstretches easily because it is thin
Ccustom-made to provide optimum thermal protection
Dcheap to rent
non-answer
Q.3 We use a BC for [ ].
Awarmth retention
Bprotection of our upper body
Cbuoyancy control
Ddrifting
non-answer
Bprotection of our upper body
Cbuoyancy control
Ddrifting
non-answer
Q.4 We use underwater lights [ ].
Aonly during the day
Bonly when it’s raining
Conly during the night
Dduring both day and night
non-answer
Bonly when it’s raining
Conly during the night
Dduring both day and night
non-answer
Q.5 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
Blesser / adjust weighting
Cgreater / adjust weighting
Dgreater / choose a suitable diving suit
non-answer
Blesser / adjust weighting
Cgreater / adjust weighting
Dgreater / choose a suitable diving suit
non-answer
Q.6 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.7 Be careful that the [ ] is tightened when washing your regulator.
Ahose protector
Byoke screw
Cpurge button
Ddust cap
non-answer
Byoke screw
Cpurge button
Ddust cap
non-answer
Q.8 We use weights to [ ].
Ato offset buoyancy
Bto remain at the ocean floor
Ccontrol our rate of ascent
Dstabilize our underwater position
non-answer
Bto remain at the ocean floor
Ccontrol our rate of ascent
Dstabilize our underwater position
non-answer
Q.9 This type of fin is easiest to use.
Aexpensive
Bhas propulsive power
Csturdy
Ddepends on your strength and how you fin kick
non-answer
Bhas propulsive power
Csturdy
Ddepends on your strength and how you fin kick
non-answer
Q.10 [ ] is the gas inside scuba tanks.
Anitrogen
Bartificial air produced underwater
Coxygen
Datmospheric air
non-answer
Bartificial air produced underwater
Coxygen
Datmospheric air
non-answer
Q.11 After using a tank, it is good to [ ].
Alet out all remaining air
Brefill with oxygen
Crefill with water
Dleave remaining air
non-answer
Brefill with oxygen
Crefill with water
Dleave remaining air
non-answer
Q.12 When you go to dive, you do not forget to being C-CARD and [ ] with you.
AEmergency foods
BRecompression Chamber
CLog Book
DTriggerfish
non-answer
BRecompression Chamber
CLog Book
DTriggerfish
non-answer
[Underwater Environment]
Q.13 We need to take care near this sea creature, which, possessing deadly poison in spines along its back, perfectly mimics its surroundings.
Ajellyfish
Bsea catfish
Cstonefish/devilfish
Dwasp scorpionfish
non-answer
Bsea catfish
Cstonefish/devilfish
Dwasp scorpionfish
non-answer
Q.14 There is a period during ebb tide and high tide when the tidal current stops. This is [ ].
Ahalf tide
Bstop tide
Cslack tide
Dtide pool
non-answer
Bstop tide
Cslack tide
Dtide pool
non-answer
Q.15 A drop-off is [ ].
Abottomless, deep ocean
Bwhat appears to be like a vertical wall
Cthe beginning of the ocean bottom’s bedrock
Da protruding rock
non-answer
Bwhat appears to be like a vertical wall
Cthe beginning of the ocean bottom’s bedrock
Da protruding rock
non-answer
Q.16 Rip currents cause [ ], and so are very dangerous.
Aundertow
Bsurge
Cbottom jolting
Dstrong current
non-answer
Bsurge
Cbottom jolting
Dstrong current
non-answer
Q.17 Thermoclines are caused [ ].
Aby poor clarity
Bwhen waters of different temperature meet
Cwhen water temperature rises
Dwhen water temperature lowers
non-answer
Bwhen waters of different temperature meet
Cwhen water temperature rises
Dwhen water temperature lowers
non-answer
Q.18 To penetrate [ ] require special training.
Arocky areas and coral reefs
Bdrop-offs
Ccaves and sunken wrecks
Dsandy and rocky areas
non-answer
Bdrop-offs
Ccaves and sunken wrecks
Dsandy and rocky areas
non-answer
Q.19 Divers need to watch their footing in the [ ] that is close to shore.
Aland breeze zone
Bsurf zone
Cocean breeze zone
Dsandy areas
non-answer
Bsurf zone
Cocean breeze zone
Dsandy areas
non-answer
Q.20 This is a shellfish, but one that possesses a strong, poisonous needle.
Acone shell
Bmoray eel
Cabalone
Dturban shell
non-answer
Bmoray eel
Cabalone
Dturban shell
non-answer
Q.21 If you encounter a dangerous sea creature, it is best to [ ].
Afeed it bait
Bescape quickly
Cattack it with a knife
Ddo nothing to provoke its natural defensive response of attack
non-answer
Bescape quickly
Cattack it with a knife
Ddo nothing to provoke its natural defensive response of attack
non-answer
Q.22 These are attracted to light.
Ashark
Bneedlefish/garfish
Cbarracuda
Dtriggerfish
non-answer
Bneedlefish/garfish
Cbarracuda
Dtriggerfish
non-answer
[Underwater Physiology]
Q.23 Underwater, things appear [ ].
Abigger and farther
Bsmaller and farther
Cbigger and closer
Dsmaller and closer
non-answer
Bsmaller and farther
Cbigger and closer
Dsmaller and closer
non-answer
Q.24 When hearing underwater, the direction of sound is [ ].
Adifficult to know
Balways above
Calways below
Deasy to know
non-answer
Balways above
Calways below
Deasy to know
non-answer
Q.25 At a depth of 10m, gas volume is [ ] on land.
Athe same as
B1/3 of that
C1/2 of that
Dtwice that as
non-answer
B1/3 of that
C1/2 of that
Dtwice that as
non-answer
Q.26 To prevent reverse block in your middle ear or sinus cavities, you should [ ].
Alimit your time diving at depth
Bcomplete a mask clear
Climit your diving time
Dmaintain your health
non-answer
Bcomplete a mask clear
Climit your diving time
Dmaintain your health
non-answer
Q.27 When you are neither sinking or ascending, you have achieved [ ].
Amiddle layer buoyancy
Bbalance
Cneutral buoyancy
Dmiddle buoyancy
non-answer
Bbalance
Cneutral buoyancy
Dmiddle buoyancy
non-answer
Q.28 You should [ ] once you notice you’re experiencing nitrogen narcosis.
Asafely ascend to a shallower depth
Bstop any movement
Cmake a decompression stop
Dtake a big, slow breath
non-answer
Bstop any movement
Cmake a decompression stop
Dtake a big, slow breath
non-answer
Q.29 If pressure doubles, gas volume becomes [ ].
A2 times greater
B4 times greater
C1/2
D1/4
non-answer
B4 times greater
C1/2
D1/4
non-answer
Q.30 If you hold your breath while ascending, you’re in danger of experiencing [ ].
Alung squeeze
Bdizziness
Cblackout
Da lung over-expansion injury
non-answer
Bdizziness
Cblackout
Da lung over-expansion injury
non-answer
Q.31 Reverse block can occur when/due to [ ].
Amaking an ascent
Bmaking a descent
Cwarm water temperature
Dhunger
non-answer
Bmaking a descent
Cwarm water temperature
Dhunger
non-answer
Q.32 It is a good idea to [ ] when diving.
Atake big, fast breaths
Btake small, slow breaths
Ctake small, fast breaths
Dtake big, slow breaths
non-answer
Btake small, slow breaths
Ctake small, fast breaths
Dtake big, slow breaths
non-answer
Q.33 When snorkeling, excess hyperventilation [ ].
Ais sometimes done
Bshould never be done
Cshould be your goal
Dis necessary
non-answer
Bshould never be done
Cshould be your goal
Dis necessary
non-answer
Q.34 Squeeze can occur when/due to [ ].
Amaking an ascent
Bcold water temperature
Cmaking a descent
Dpoor physical condition
non-answer
Bcold water temperature
Cmaking a descent
Dpoor physical condition
non-answer
Q.35 Underwater, as air density is [ ], breathing resistance [ ].
Ahigher / decreases
Blower / decreases
Chigher / increases
Dlower / increases
non-answer
Blower / decreases
Chigher / increases
Dlower / increases
non-answer
Q.36 Atmospheric air consists of [ ]% oxygen, [ ]% nitrogen, and about 1% other gases.
A21 / 78
B71 / 28
C51 / 48
D41 / 58
non-answer
B71 / 28
C51 / 48
D41 / 58
non-answer
[Plan and Rules]
Q.37 When it comes to diving, the most important thing to keep in mind is [ ].
Asafety
Bhaving the best gear
Cseeing marine life
Dbeing adventurous
non-answer
Bhaving the best gear
Cseeing marine life
Dbeing adventurous
non-answer
Q.38 The ideal surface interval time is [ ].
Aat least 10 minutes
Bat least 1 hour
Cat least 3 hours
Dshort
non-answer
Bat least 1 hour
Cat least 3 hours
Dshort
non-answer
Q.39 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
B13
C64
D32
non-answer
B13
C64
D32
non-answer
Q.40 When ocean conditions, etc, change and present possible dangers, the dive plan [ ].
Ashould be adapted accordingly
Bshould be submitted to the Coast Guard
Cis fine as is
Dshould be submitted to the police
non-answer
Bshould be submitted to the Coast Guard
Cis fine as is
Dshould be submitted to the police
non-answer
Q.41 The best dive plans [ ]safety stops.
Aprohibit
Bavoid if at all possible
Care also fine if they have
Dshould have
non-answer
Bavoid if at all possible
Care also fine if they have
Dshould have
non-answer
Q.42 When repetitive diving, dives from the second onwards should be planned [ ].
Agradually shallower
Bat a different depth
Cgradually deeper
Dequally as deep as the previous dive
non-answer
Bat a different depth
Cgradually deeper
Dequally as deep as the previous dive
non-answer
Q.43 The best dive plans [ ] decompression stops.
Aavoid if at all possible
Bprohibit
Cshould have
Dare also fine if they have
non-answer
Bprohibit
Cshould have
Dare also fine if they have
non-answer
Q.44 If you become separated from your buddy or group while diving, you should [ ].
Abegin an underwater search
Bexit the water
Csafely ascend to the surface
Dact according to the plan you discussed and decided upon in your pre-dive planning
non-answer
Bexit the water
Csafely ascend to the surface
Dact according to the plan you discussed and decided upon in your pre-dive planning
non-answer
Q.45 It is necessary to review hand signals before a dive with [ ].
Ayour dive buddies
Ball members in the group
Csome individuals
Dyour dive leader
non-answer
Ball members in the group
Csome individuals
Dyour dive leader
non-answer
Q.46 This is very important for maintaining good health for diving.
Abeing on a diet
Bhaving a great suntan
Chaving some drinks the night before
Dbeing well-rested
non-answer
Bhaving a great suntan
Chaving some drinks the night before
Dbeing well-rested
non-answer
Q.47 The hand signal on the right indicates [ ].
AI can’t hear
BI’m having problems equalizing my ears
CMe/My
DI understand
non-answer
BI’m having problems equalizing my ears
CMe/My
DI understand
non-answer
Q.48 The hand signal on the right indicates [ ].
AThat’s really big
BDescend
COk!
DAscend
non-answer
BDescend
COk!
DAscend
non-answer
Q.49 When you haven’t been diving for a long period of time, it’s good to [ ].
Abe well-rested
Bdrink little alcohol
Cbuy a dive computer
Dtake a refresher course
non-answer
Bdrink little alcohol
Cbuy a dive computer
Dtake a refresher course
non-answer
Q.50 The No-decompression dive limit for a depth of 18m is [ ] minutes.
A64
B30
C50
D40
non-answer
B30
C50
D40
non-answer
Q.51 You dived for 30 minutes at 18m.Which letter category are you in your dive table calculations?
AD
BE
CG
DF
non-answer
BE
CG
DF
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 ]?
A13
B32
C64
D51
non-answer
B32
C64
D51
non-answer
Q.53 For dive plans, the ideal remaining tank pressure after a dive is at least [ ].
A20 bar
B50 bar
C100 bar
D0 bar
non-answer
B50 bar
C100 bar
D0 bar
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?
AE
BF
CG
DD
non-answer
BF
CG
DD
non-answer
Q.55 Never ascend any faster than [ ].
A10m / minutes
B15cm / minutes
C10km / minutes
D18m / minutes
non-answer
B15cm / minutes
C10km / minutes
D18m / minutes
non-answer
[Diving Skills]
Q.56 Be careful of [ ] getting into your mask when fitting it.
Ahair
Bnose
Ceyebrows
Dair
non-answer
Bnose
Ceyebrows
Dair
non-answer
Q.57 Octopus breathing and buddy breathing are both techniques for receiving [ ].
Acourage
Bnitrogen
Chand signals
Dair
non-answer
Bnitrogen
Chand signals
Dair
non-answer
Q.58 If you panic, stop moving, [ ] a few times, and regain your composure.
Aclear your mask
Bpray
Cinflate your BC
Ddeeply breathe
non-answer
Bpray
Cinflate your BC
Ddeeply breathe
non-answer
Q.59 When entering the water, we ensure our BC [ ].
Ahas weights in its pockets
Bis unfastened
Chas sufficient air to provide buoyancy at the surface
Dhas had the air exhausted
non-answer
Bis unfastened
Chas sufficient air to provide buoyancy at the surface
Dhas had the air exhausted
non-answer
Q.60 When you slowly open the tank valve, the pressure gauge [ ].
Ashould be turned upwards
Bsinks underwater
Cshould be turned downwards
Dshould be placed so you can see
non-answer
Bsinks underwater
Cshould be turned downwards
Dshould be placed so you can see
non-answer
Q.61 If this changes, it is necessary to adjust your buoyancy.
Awater temperature
Bdepth
Cwater clarity
Dweather
non-answer
Bdepth
Cwater clarity
Dweather
non-answer
Q.62 When performing a mask clear, you press on the [ ] of the mask’s frame and slowly blow air from your [ ].
Atop / nose
Bbottom / mouth
Cbottom / nose
Dtop / mouth
non-answer
Bbottom / mouth
Cbottom / nose
Dtop / mouth
non-answer
Q.63 By dropping your [ ] and using the buoyancy of your dive suit, you can complete the free ascent method of ascending.
Awill to live
Bweight belt
Cfins
Dmask
non-answer
Bweight belt
Cfins
Dmask
non-answer
Q.64 A tank that has been set up with BC and regulator should be [ ].
Aplaced standing on an even surface
Bput on
Cplaced laying down
Dset floating in the ocean
non-answer
Bput on
Cplaced laying down
Dset floating in the ocean
non-answer
Q.65 In general, when descending we [ ].
Aperform a mask clear and equalize our ears
Bbreathe and equalize our ears
Cmake a decompression stop and perform a mask blow
Dequalize our ears and perform a mask blow
non-answer
Bbreathe and equalize our ears
Cmake a decompression stop and perform a mask blow
Dequalize our ears and perform a mask blow
non-answer
Q.66 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.
ABC
Bweight belt
Cregulator
Dpressure gauge
non-answer
Bweight belt
Cregulator
Dpressure gauge
non-answer
Q.67 If you get a leg cramp while diving, grasp your [ ] in order to stretch out your muscles.
Aknees
Bheel
Cfin tip
Dfinger
non-answer
Bheel
Cfin tip
Dfinger
non-answer
Q.68 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
Cbefore eating / after eating
Dwhen exhaling / when inhaling
non-answer
Bbefore diving / after diving
Cbefore eating / after eating
Dwhen exhaling / when inhaling
non-answer
Q.69 We can do this technique with our breath to complete both a regulator clear and a snorkel clear.
Astop breathing
Binhale
Cbreathe naturally
Dexhale
non-answer
Binhale
Cbreathe naturally
Dexhale
non-answer
Q.70 When ascending, we slowly turn 360 degrees while [ ].
Aexhausting air from our BC
Bmaintaining the air in our BC
Cclearing our mask
Dholding our breath
non-answer
Bmaintaining the air in our BC
Cclearing our mask
Dholding our breath
non-answer