NET-DIVER SCHOOL FINALCHECK
[Dive Equipment]
Q.1 What makes a good wetsuit?
Acolorful
Bcheap to rent
Cstretches easily because it is thin
Dcustom-made to provide optimum thermal protection
non-answer
Bcheap to rent
Cstretches easily because it is thin
Dcustom-made to provide optimum thermal protection
non-answer
Q.2 We use underwater lights [ ].
Aonly when it’s raining
Bonly during the night
Conly during the day
Dduring both day and night
non-answer
Bonly during the night
Conly during the day
Dduring both day and night
non-answer
Q.3 The 3-item snorkel set consists of [ ].
Awetsuit, BC, tank
Bmask, fin, glove
Csnorkel, mask, fin
Dwetsuit, fin, mask
non-answer
Bmask, fin, glove
Csnorkel, mask, fin
Dwetsuit, fin, mask
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 / adjust weighting
Bgreater / choose a suitable diving suit
Clesser / choose a suitable diving suit
Dgreater / adjust weighting
non-answer
Bgreater / choose a suitable diving suit
Clesser / choose a suitable diving suit
Dgreater / adjust weighting
non-answer
Q.5 This type of fin is easiest to use.
Adepends on your strength and how you fin kick
Bhas propulsive power
Csturdy
Dexpensive
non-answer
Bhas propulsive power
Csturdy
Dexpensive
non-answer
Q.6 We use a BC for [ ].
Aprotection of our upper body
Bwarmth retention
Cbuoyancy control
Ddrifting
non-answer
Bwarmth retention
Cbuoyancy control
Ddrifting
non-answer
Q.7 When you’ve finished your dive, it is good for your equipment to [ ].
Alet it dry
Bwash with salt water, and let dry
Cwash with fresh water, and dry in the shade
Dwash with fresh water, and dry in the sun
non-answer
Bwash with salt water, and let dry
Cwash with fresh water, and dry in the shade
Dwash with fresh water, and dry in the sun
non-answer
Q.8 After using a tank, it is good to [ ].
Arefill with oxygen
Brefill with water
Cleave remaining air
Dlet out all remaining air
non-answer
Brefill with water
Cleave remaining air
Dlet out all remaining air
non-answer
Q.9 [ ] is the gas inside scuba tanks.
Aatmospheric air
Bartificial air produced underwater
Coxygen
Dnitrogen
non-answer
Bartificial air produced underwater
Coxygen
Dnitrogen
non-answer
Q.10 We use weights to [ ].
Acontrol our rate of ascent
Bto remain at the ocean floor
Cto offset buoyancy
Dstabilize our underwater position
non-answer
Bto remain at the ocean floor
Cto offset buoyancy
Dstabilize our underwater position
non-answer
Q.11 Be careful that the [ ] is tightened when washing your regulator.
Ayoke screw
Bdust cap
Cpurge button
Dhose protector
non-answer
Bdust cap
Cpurge button
Dhose protector
non-answer
Q.12 When you go to dive, you do not forget to being C-CARD and [ ] with you.
AEmergency foods
BTriggerfish
CRecompression Chamber
DLog Book
non-answer
BTriggerfish
CRecompression Chamber
DLog Book
non-answer
[Underwater Environment]
Q.13 Rip currents cause [ ], and so are very dangerous.
Asurge
Bbottom jolting
Cstrong current
Dundertow
non-answer
Bbottom jolting
Cstrong current
Dundertow
non-answer
Q.14 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.15 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.16 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.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 If you encounter a dangerous sea creature, it is best to [ ].
Ado nothing to provoke its natural defensive response of attack
Bescape quickly
Cattack it with a knife
Dfeed it bait
non-answer
Bescape quickly
Cattack it with a knife
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
Btide pool
Cslack tide
Dhalf tide
non-answer
Btide pool
Cslack tide
Dhalf tide
non-answer
Q.20 Divers need to watch their footing in the [ ] that is close to shore.
Asurf zone
Bland breeze zone
Cocean breeze zone
Dsandy areas
non-answer
Bland breeze zone
Cocean breeze zone
Dsandy areas
non-answer
Q.21 To penetrate [ ] require special training.
Asandy and rocky areas
Bcaves and sunken wrecks
Crocky areas and coral reefs
Ddrop-offs
non-answer
Bcaves and sunken wrecks
Crocky areas and coral reefs
Ddrop-offs
non-answer
Q.22 These are attracted to light.
Atriggerfish
Bneedlefish/garfish
Cshark
Dbarracuda
non-answer
Bneedlefish/garfish
Cshark
Dbarracuda
non-answer
[Underwater Physiology]
Q.23 Underwater, things appear [ ].
Abigger and farther
Bbigger and closer
Csmaller and closer
Dsmaller and farther
non-answer
Bbigger and closer
Csmaller and closer
Dsmaller and farther
non-answer
Q.24 When you are neither sinking or ascending, you have achieved [ ].
Amiddle buoyancy
Bbalance
Cneutral buoyancy
Dmiddle layer buoyancy
non-answer
Bbalance
Cneutral buoyancy
Dmiddle layer buoyancy
non-answer
Q.25 Underwater, as air density is [ ], breathing resistance [ ].
Alower / decreases
Blower / increases
Chigher / increases
Dhigher / decreases
non-answer
Blower / increases
Chigher / increases
Dhigher / decreases
non-answer
Q.26 At a depth of 10m, gas volume is [ ] on land.
Atwice that as
B1/2 of that
C1/3 of that
Dthe same as
non-answer
B1/2 of that
C1/3 of that
Dthe same as
non-answer
Q.27 Atmospheric air consists of [ ]% oxygen, [ ]% nitrogen, and about 1% other gases.
A21 / 78
B51 / 48
C41 / 58
D71 / 28
non-answer
B51 / 48
C41 / 58
D71 / 28
non-answer
Q.28 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.29 When hearing underwater, the direction of sound is [ ].
Aalways below
Balways above
Ceasy to know
Ddifficult to know
non-answer
Balways above
Ceasy to know
Ddifficult to know
non-answer
Q.30 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.31 If pressure doubles, gas volume becomes [ ].
A2 times greater
B1/4
C1/2
D4 times greater
non-answer
B1/4
C1/2
D4 times greater
non-answer
Q.32 You should [ ] once you notice you’re experiencing nitrogen narcosis.
Amake a decompression stop
Btake a big, slow breath
Cstop any movement
Dsafely ascend to a shallower depth
non-answer
Btake a big, slow breath
Cstop any movement
Dsafely ascend to a shallower depth
non-answer
Q.33 When snorkeling, excess hyperventilation [ ].
Ais necessary
Bshould never be done
Cis sometimes done
Dshould be your goal
non-answer
Bshould never be done
Cis sometimes done
Dshould be your goal
non-answer
Q.34 Squeeze can occur when/due to [ ].
Amaking a descent
Bpoor physical condition
Ccold water temperature
Dmaking an ascent
non-answer
Bpoor physical condition
Ccold water temperature
Dmaking an ascent
non-answer
Q.35 Reverse block can occur when/due to [ ].
Amaking an ascent
Bmaking a descent
Chunger
Dwarm water temperature
non-answer
Bmaking a descent
Chunger
Dwarm water temperature
non-answer
Q.36 To prevent reverse block in your middle ear or sinus cavities, you should [ ].
Amaintain your health
Blimit your time diving at depth
Climit your diving time
Dcomplete a mask clear
non-answer
Blimit your time diving at depth
Climit your diving time
Dcomplete a mask clear
non-answer
[Plan and Rules]
Q.37 This is very important for maintaining good health for diving.
Abeing well-rested
Bhaving some drinks the night before
Chaving a great suntan
Dbeing on a diet
non-answer
Bhaving some drinks the night before
Chaving a great suntan
Dbeing on a diet
non-answer
Q.38 When it comes to diving, the most important thing to keep in mind is [ ].
Abeing adventurous
Bsafety
Chaving the best gear
Dseeing marine life
non-answer
Bsafety
Chaving the best gear
Dseeing marine life
non-answer
Q.39 The best dive plans [ ]safety 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.40 The best dive plans [ ] decompression stops.
Aavoid if at all possible
Bshould have
Care also fine if they have
Dprohibit
non-answer
Bshould have
Care also fine if they have
Dprohibit
non-answer
Q.41 When repetitive diving, dives from the second onwards should be planned [ ].
Agradually deeper
Bequally as deep as the previous dive
Cat a different depth
Dgradually shallower
non-answer
Bequally as deep as the previous dive
Cat a different depth
Dgradually shallower
non-answer
Q.42 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.43 The hand signal on the right indicates [ ].
AThat’s really big
BDescend
COk!
DAscend
non-answer
BDescend
COk!
DAscend
non-answer
Q.44 For dive plans, the ideal remaining tank pressure after a dive is at least [ ].
A0 bar
B100 bar
C50 bar
D20 bar
non-answer
B100 bar
C50 bar
D20 bar
non-answer
Q.45 The No-decompression dive limit for a depth of 18m is [ ] minutes.
A30
B40
C64
D50
non-answer
B40
C64
D50
non-answer
Q.46 If you become separated from your buddy or group while diving, you should [ ].
Abegin an underwater search
Bexit the water
Cact according to the plan you discussed and decided upon in your pre-dive planning
Dsafely ascend to the surface
non-answer
Bexit the water
Cact according to the plan you discussed and decided upon in your pre-dive planning
Dsafely ascend to the surface
non-answer
Q.47 You dived for 30 minutes at 18m.Which letter category are you in your dive table calculations?
AE
BD
CG
DF
non-answer
BD
CG
DF
non-answer
Q.48 It is necessary to review hand signals before a dive with [ ].
Asome individuals
Byour dive buddies
Cyour dive leader
Dall members in the group
non-answer
Byour dive buddies
Cyour dive leader
Dall members in the group
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
Cdrink little alcohol
Dbuy a dive computer
non-answer
Btake a refresher course
Cdrink little alcohol
Dbuy a dive computer
non-answer
Q.50 When ocean conditions, etc, change and present possible dangers, the dive plan [ ].
Ais fine as is
Bshould be submitted to the police
Cshould be adapted accordingly
Dshould be submitted to the Coast Guard
non-answer
Bshould be submitted to the police
Cshould be adapted accordingly
Dshould be submitted to the Coast Guard
non-answer
Q.51 The hand signal on the right indicates [ ].
AI can’t hear
BI understand
CMe/My
DI’m having problems equalizing my ears
non-answer
BI understand
CMe/My
DI’m having problems equalizing my ears
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
B64
C51
D32
non-answer
B64
C51
D32
non-answer
Q.53 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 ].
A64
B51
C13
D32
non-answer
B51
C13
D32
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.
Anose
Bair
Chair
Deyebrows
non-answer
Bair
Chair
Deyebrows
non-answer
Q.57 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
Bwhen exhaling / when inhaling
Cbefore eating / after eating
Dbefore diving / after diving
non-answer
Bwhen exhaling / when inhaling
Cbefore eating / after eating
Dbefore diving / after diving
non-answer
Q.58 If this changes, it is necessary to adjust your buoyancy.
Awater temperature
Bweather
Cdepth
Dwater clarity
non-answer
Bweather
Cdepth
Dwater clarity
non-answer
Q.59 In general, when descending we [ ].
Aequalize our ears and perform a mask blow
Bbreathe and equalize our ears
Cmake a decompression stop and perform a mask blow
Dperform a mask clear and equalize our ears
non-answer
Bbreathe and equalize our ears
Cmake a decompression stop and perform a mask blow
Dperform a mask clear and equalize our ears
non-answer
Q.60 If you get a leg cramp while diving, grasp your [ ] in order to stretch out your muscles.
Aknees
Bfinger
Cfin tip
Dheel
non-answer
Bfinger
Cfin tip
Dheel
non-answer
Q.61 If you panic, stop moving, [ ] a few times, and regain your composure.
Ainflate your BC
Bpray
Cdeeply breathe
Dclear your mask
non-answer
Bpray
Cdeeply breathe
Dclear your mask
non-answer
Q.62 A tank that has been set up with BC and regulator should be [ ].
Aplaced standing on an even surface
Bplaced laying down
Cput on
Dset floating in the ocean
non-answer
Bplaced laying down
Cput on
Dset floating in the ocean
non-answer
Q.63 Octopus breathing and buddy breathing are both techniques for receiving [ ].
Aair
Bnitrogen
Chand signals
Dcourage
non-answer
Bnitrogen
Chand signals
Dcourage
non-answer
Q.64 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.65 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.66 We can do this technique with our breath to complete both a regulator clear and a snorkel clear.
Aexhale
Bbreathe naturally
Cinhale
Dstop breathing
non-answer
Bbreathe naturally
Cinhale
Dstop breathing
non-answer
Q.67 When ascending, we slowly turn 360 degrees while [ ].
Aholding our breath
Bclearing our mask
Cmaintaining the air in our BC
Dexhausting air from our BC
non-answer
Bclearing our mask
Cmaintaining the air in our BC
Dexhausting air from our BC
non-answer
Q.68 When you slowly open the tank valve, the pressure gauge [ ].
Ashould be placed so you can see
Bshould be turned upwards
Csinks underwater
Dshould be turned downwards
non-answer
Bshould be turned upwards
Csinks underwater
Dshould be turned downwards
non-answer
Q.69 When entering the water, we ensure our BC [ ].
Ahas sufficient air to provide buoyancy at the surface
Bhas had the air exhausted
Chas weights in its pockets
Dis unfastened
non-answer
Bhas had the air exhausted
Chas weights in its pockets
Dis unfastened
non-answer
Q.70 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