講義igcse物理15年16真題0625 wms

CambridgeInternationalGeneralofSecondaryMARKSCHEMEfortheOctober/November20150625Paper6(AlternativetoumrawmarkThismarkschemeispublishedasanaidtoteachersandcandidates,toindicatetherequirementsoftheexamination.ItshowsthebasisonwhichExaminerswereinstructedtoawardmarks.ItdoesnotindicatethedetailsofthediscussionsthattookceatanExaminers’meetingbeforemarkingbegan,whichwouldhaveconsideredtheacceptabilityofalternativeanswers.Markschemesshouldberead onjunctionwiththequestionpaperandthePr ipalExaminerReportforTeachers.?CambridgeIGCSE,CambridgeInternationalAandASLevelcomponentsand?IGCSEis Brackets()aroundwordsorunitsinthemarkschemeareintendedtoindicatewordingusedtoclarifythemarkscheme,butthemarksdonotdependonseeingthewordsorunitsinbrackets,e.g.10(J)meansthatthemarkisscoredfor10,regardlessoftheunitgiven. means"correctanswermeans"errorcarriedforward".Thisindicatesthatifacandidatehasmadeanearliermistakeandhascarriedhisorrectvalueforwardtosubsequentstagesofworking,hevidedhisorhersubsequentworkingiscorrect,bearinginmindhisorherearliermistake.Thispreventsacandidatebeingpenalisedmorethanonceforaparticularmistake,butonlyappliestomarksannotated means“orwordstothatUnderliningindicatesthatthismustbeseenintheansweroffered,orsomethingverysimilar. indicatesalternativeanswers,anyoneofwhichissatisfactoryforscoringthemark. indicatesthatbothanswersarerequiredtoscorethemark. BegenerousaboutspellinganduseofEnglish.However,donotallowambiguities,e.g.spellingwhichsuggestsconfusionbetweenreflection/refraction/diffractionorthermistor/transistor/transformer. Answersaregenerallyacceptabletoanynumberofsignificantfigures≥2,exceptwhere themarkschemespecifiesotherwise. Theseareonlyacceptablewhere indicatesthatan orrectanswerisnottobedisregarded,butcancelsanotherotherwisecorrectalternativeofferedbythecandidate.i.e.rightpluswrongpenalty (a)(i)( x=40mm/4(.0)cmANDy=19mm/1.9bothwithcorrect ( 40(.0)AND19(.0)infirstlineof axesbothcorrectlylabelled,rightwayroundandwith suitable allplotscorrecttowithin?small goodbest-fitlinejudgement,single,thin,continuous trianglemethodusingatleasthalfcandidate’sline,shownon G=0.41–0.52(2–3sig.figs. P=20–500 Q=2×P(exactly)ORQ= [Total: (a)θ1=82 (b) s,°C, ( 10,20,30,40,50, (c)(i)()?θ1=39(°C)AND?θ2=8 ( temperatureθ2attimet=0lessthan view tright anyoneroomtemperature/otherenvironmentalvolume/mass/ty/amountofhotinitialtemperatureofthehotinitialtemperatureofthecoldinitialtemperatureofthe 3V1=2(.0)I1=0.32(R1=6.25(?)ORe.c.f.(i)ANDcorrectunitsV,A,?in(i)and(correctarrangementof correctpositionforvoltmeNDcorrectcircuitsymbolsANDcorrectlabellingresistorsA,Band 3.0/3.04/3.043 ( 2.1/2.05/2.06/2.07/2.08ORe.c.f.ANDno statementmatches ludingtheideaofwithin(orbeyond)thelimitsofexperimental (a)(i)( normaldrawnatcentreof rayat30°(±1°) ray8.0cmlong P1P2distance?5cm (i)alllinescorrectlydrawnANDalllinessingle,thin,continuouslines ( r= anytwoensurepinsarevertical/viewbasesofpinsfarapart(or?5thinlines/sharppencil/thin anyonethicknessofmirror/mirrorglasssilveredatbackthicknessofdifficultyinlininguppins(andtheirimageactly) [Total:(a)(human)reaction rulerormetre repeatfordifferentdiametersaroundthe anytwosize/mass/weight/volume/diameter/densityofsizeofthesandgrains/typeofsand/natureofthedampness/depthof 201510/1106250625/626（替代實(shí)用）20151011IGCSEAASLevel部分劍橋OLevel部分的評(píng)分方案。第2頁評(píng)分計(jì)劃教學(xué)大 劍橋IGCSE–2015年10月/11月0625到括號(hào)中的單詞或單元，例如10(J)表示分?jǐn)?shù)為10，無論給出的單位如何。e.c.fOR表示替代答案，其中任何一個(gè)都可以滿足得分要求。AND表示需要兩個(gè)答案才能得分。分?jǐn)?shù)只有在指定的情況下才可以接受。第3頁評(píng)分計(jì)劃教學(xué)大綱 劍橋IGCSE–2015年10月/11月062562 [1]40(.019(.0)所有正確到內(nèi)。小方塊1]G0.41–0.52（2–3sig.P20–500g1]Q2P（精確）QP/G總數(shù)2(a)θ1=82(°C)(i)s、°C、°C10,20,30,40,50,60c)(i)().θ1=39(°C)且.θ2=8(°C) t0θ2θ1R16.25e