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Captain’sTryouts2017
DynamicPlanet–Test
Writtenby:AraneeshPratap(ChattahoocheeHighSchool)
Name:̠Date:̠
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Answerallquestionsontheanswersheet.Pointvaluesaregivennexttoeach
questionorsetofsimilarquestions.Themaximumpossiblescoreis83points.
PleasedoNOTwriteontheimagesheetorquestionpacket.
Tiebreakers(inorder):11,24,33,41,45,52,54,57
SOCT2017DynamicPlanetChattahoochee–TestPacket1
Forquestions1through20,writeasingle
letterontheanswersheet.Eachquestion
isworth1point.
1. The_________istheviscous,ductile
layeroftheearththatispartofthe
mantle.
a. crust
b. lithosphere
c. troposphere
d. asthenosphere
2. Thisscientistproposedthetheoryof
continentaldriftintheearly20th
century.
a. RobertDietz
b. AlfredWegener
c. KeithRuncorn
d. MauriceEwing
3. Thisscientistwaspartoftheteamthat
discoveredtheMid-AtlanticRidge.
a. RobertDietz
b. AlfredWegener
c. KeithRuncorn
d. MauriceEwing
4. Howmanymajortectonicplatesare
generallyrecognized?
a. 5-6
b. 7-8
c. 9-10
d. 11-12
5. Mid-Oceanridgesformprimarilyat
whichtypeofplateboundary?
a. Transform
b. Convergent
c. Divergent
d. TripleJunction
6. Whichofthefollowingisacommon
causeofcontinentalrifting?
a. Collisionorogeny
b. Subduction
c. Obduction
d. Hotspots
7. Whatprocessisoccurringinimage1?
a. Crustalformation
b. Lateralshear
c. Forearcspreading
d. Subduction
8. Whydoesthescaleinimage1endat
100km?
a. Theearthis100kmdeep
b. Measuringinstrumentscannot
seeanydeeper.
c. Rockmeltsbelowthispoint
d. Rocksdehydratebelowthis
point,soitbecomes
tectonicallyirrelevant.
9. Theasthenosphereprimarilytransfers
energyusing________.
a. convection
b. conduction
c. radiation
d. refraction
10. Oceanicbackarcbasinsformnearwhat
process?
a. IslandArcsubduction
b. Cordilleransubduction
c. Collisionorogeny
d. Transformboundaries
11. Rocksrelease_______andbecome
______whentheysubduct.
a. water;serpentines
b. carbondioxide;schist
c. sulfur;azurite
d. water;olivines
12. Whichofthefollowingaremostlikely
toformlargethrustfaults?
a. Subduction
b. Divergentridges
c. Continent-continentcollisions
d. Hotspots
13. Continentalplatesareusually_____
thanoceanicplates.
a. thinner
b. thicker
SOCT2017DynamicPlanetChattahoochee–TestPacket2
14. Whattectonicprocessisformingthe
mountainsinimage2?
a. Continent-continentcollision
b. Islandarcsubduction
c. Transformfaultshearing
d. Oceanic-oceanicsubduction
15. Whattwomajorplatesarecollidingto
formthemountainsinimage2?
a. EurasianandNorthAmerican
b. SouthAmericanandAfrican
c. AfricanandNazca
d. AfricanandEurasian
16. Earthquakesalongwhichfaultformed
theAleutianIslands?
a. DeadSeaTransform
b. SanAndreasFault
c. AlpineFault
d. QueenCharlotteFault
17. Whichoftheseistheoldest?
a. RockyMountains
b. IsthmusofPanama
c. AppalachianMountains
d. CarpathianMountains
18. Continentalcrustcoveredbysediment
atapassivemargindisplayswhattype
offaulting?
a. Normal
b. Reverse
c. Listric
d. Transform
19. ThemotionoftheYellowstoneHotspot
indicatesthattheNorthAmericanplate
ismoving̠.
a. North
b. Northeast
c. Southeast
d. West
20. Whichofthefollowingplatesisno
longerinexistenceduetosubduction?
a. Cocos
b. Farallon
c. Australian
d. Nazca
Forquestions21through30,circleallofthe
correctanswersontheanswersheet.Ifnone
oftheanswerchoiceslistediscorrect,donot
circleany.Eachquestionisworth2points.
21. Whichofthefollowingphenomenaare
associatedwithoceanicdivergence?
a. Pillowbasalt
b. Magneticreversal
c. Oceanictrenches
d. Stratovolcanoes
22. Whichofthefollowinganswerchoices
containrelatedpairs?
a. Hotspot;IslandArcsubduction
b. Aulacogen;Triplejunction
c. Obduction;Ophiolite
d. Riftvalley;Graben
23. TheLaurentianShieldhasbeenapart
ofwhichofthefollowingstructures?
a. Gondwana
b. Pangaea
c. Rodinia
d. Baltica
24. Whichofthefollowingaremethods
thatcandetectvolcanicactivity?
a. Monitoringgaseousemissions
b. Detectingearthquakes
c. Monitoringriverchannels
d. Measuringelevationchanges
25. Whichofthefollowinglocations
containsoceaniccrustgreaterthan150
millionyearsold?
a. SouthAmerica’swestcoast
b. BayofBengal
c. PacificOceaneastofJapan
d. SwahiliCoast
SOCT2017DynamicPlanetChattahoochee–TestPacket3
26. Whichofthefollowingmethodscanbe
usedinplatereconstruction?
a. Continentalgeometry
b. Magneticpolarity
c. Mountainranges
d. Hotspots
27. Thediagramshowninimage3isoften
associatedwithwhichofthefollowing?
a. Collisionorogeny
b. Islandarcmélanges
c. Transformboundaries
d. Thrustfaults
28. Whichofthefollowingoftenformthe
featuresshowninimage3?
a. BasinandRange
b. Coastalplain
c. Islandarcsystem
d. Forelandbasin
29. Whichofthefollowingareassociated
withmaficvolcanoes?
a. Transformboundaries
b. Convergentboundaries
c. Divergentboundaries
d. Hotspots
30. Whichofthefollowingareassociated
withdip-slipfaults?
a. Transformboundaries
b. Continent-continentorogeny
c. Riftvalleys
d. Mid-Oceanridges
Questions31through50areshortanswer.Eachquestionisworth1point.
31. Whattypeofbasinisformedwhenagrabenfillswithsedimenterodedfromadjoininghorst?
32. Inasituationwhereanoceanicplatecollideswithacontinentalplate,whichplatewillsubduct?
33. WhicharmoftheAfarTripleJunctionisanaulacogen?
Useimage4toanswerquestions34through41.
34. –39.Identifythestructures
40. Aprocessoccurswhentheoceaniccrustreachesasufficientdepthinwhichitreleases
supercriticalwater,causingtherockaroundittomeltduetoadecreaseinpressure.Thisisthe
reversalofwhatmineralalterationprocess?
41. Whattypeofmetamorphosisoccurswiththereleaseofwaterinquestion40?
Useimage5toanswerquestions42through46.
42.
43.
44.
45.
46.
Whatgeologicalprocessisshowninimage5?
Whichsectiondepictsacontinentalriftvalley?
Whichtwosectionsincludeanoceanictrench?
Whatisthenameoftheflat,erodedplainshowninsection(G)?
Whattypeofgeologicstructureisshowninsection(A)?
Useimages6and7toanswerquestions47through50.
47.
48.
49.
50.
InwhatdirectionwastheAfricancontinentrotatingbetweenthetwoimages?
InwhatgeneraldirectionwasSouthAmericamoving?
InwhatgeneraldirectionwasNorthAmericamoving?
Whichofthethreecontinentsrotatedthemost?
SOCT2017DynamicPlanetChattahoochee–TestPacket4
Questions51through57arefree-response.Pointvaluesaregivennexttoeachquestion.The
maximumscoreforthissectionis23points.
51. ExplaintheprimarydifferencebetweenCordilleranandIslandArcsubductionzones.Giveone
exampleofacurrentlyactiveislandarcsubductionzone.(4points)
52. Identifyandexplainthevariationsinthreecharacteristicsofmagmaand/orvolcaniceruptions
thatvarybasedonitssilicacontent.(3points)
53. Explaintheconceptsofridgepushandslabpullinrelationtoseafloorspreading,includingtheir
relativestrengths.(5points)
54. Explaintheconceptofisostasyandhowitaffectsplatetectonics?(3points)
55. Whatisthedifferencebetweenstressandstrain?Whichofthemcausestheother?(3points)
56. Compareandcontrastelasticdeformationandductiledeformation.Explainthedifference
betweenbrittleandductilematerialsintermsofelasticandductiledeformation.(5points)
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