2026年四川省苏教版八年级英语下册第6单元实验探究题

2026年四川省苏教版八年级英语下册第6单元实验探究题一、单项选择题（总共10题，每题2分，共20分）1.Accordingtothe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6,whatisthemainpurposeoftheexperiment"WaterPurification"?Theexperimentaimstoexploretheprocessofpurifyingdirtywaterthroughdifferentmethodssuchasfiltration,sedimentation,andboiling.Basedonthetextbook,whichstatementbestdescribestheexpectedoutcomeoftheexperiment?A.Thepurifiedwaterwillbecomecompletelycleanandsuitablefordrinkingwithoutanytreatment.B.Theexperimentwilldemonstratethatboilingisthemosteffectivemethodforwaterpurification.C.Theexperimentwillshowthatfiltrationandsedimentationcanremoveimpuritiesbutnotallmicroorganisms.D.Theexperimentwillprovethatallnaturalwatersourcesarealreadypurifiedbynature.2.Intheexperiment"GrowingPlantsinDifferentEnvironments,"asdescribedinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,studentsarerequiredtoobserveandrecordchangesinplantsexposedtosunlight,shade,andlimitedwater.Whichofthefollowingobservationswouldmostlikelyindicatethatsunlightisessentialforplantgrowth?A.Theplantsinsunlightgrowtallerbutshownodifferenceinleafcolor.B.Theplantsinshadewiltquickly,whilethoseinsunlightremainhealthy.C.Theplantsinlimitedwaterdevelopyellowleaves,butthoseinsunlighthavegreenleaves.D.Theplantsinallenvironmentsgrowatthesamerate,showingnoenvironmentalimpact.3.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6includesanexperimenton"ElectricCircuits."Accordingtothetextbook,whichofthefollowingscenarioswouldcorrectlycompleteanelectricalcircuitusingabattery,wires,andalightbulb?A.Connectingthebatterydirectlytothelightbulbwithoutanywires.B.Placingthelightbulbbetweenthebatteryandthewires,withnodirectconnection.C.Connectingonewiretothebattery,anotherwiretothelightbulb,andleavingtheotherendsofthewiresunconnected.D.Connectingthebatterytoonewire,thewiretothelightbulb,andtheotherwiretothebattery,formingaclosedloop.4.Intheexperiment"TestingtheStrengthofDifferentMaterials,"asdetailedinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,studentsareaskedtocomparehowpaper,wood,andplasticholdweightbeforebreaking.Whichofthefollowingresultswouldsupportthehypothesisthatwoodisthestrongestmaterial?A.Thepaperbreaksaftersupporting1kgofweight,thewoodsupports5kg,andtheplasticsupports3kg.B.Thewoodbreaksaftersupporting2kgofweight,thepapersupports1kg,andtheplasticsupports4kg.C.Theplasticholds6kgofweight,thewoodholds4kg,andthepaperholds2kg.D.Thewoodandplasticbreakatthesameweight,whilethepaperbreaksfirst.5.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"ExploringSoundWaves"involvesusingatuningforkandabowlofwater.Whichofthefollowingobservationswouldindicatethatsoundwavescantravelthroughwater?A.Thetuningforkproducesaloudsoundwhenplacedintheairbutmakesnosoundinthewater.B.Thetuningforkcreatesripplesinthewater,andthesoundisheardclearly.C.Thewatersplasheswhenthetuningforkismoved,butnosoundisproduced.D.Thetuningforksinksinthewaterwithoutproducinganysoundorripples.6.Intheexperiment"ComparingPlantandAnimalCells,"asdescribedinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,studentsusemicroscopestoobservecells.Whichofthefollowingstructureswouldstudentsmostlikelyidentifyasakeydifferencebetweenplantandanimalcells?A.Chloroplasts,whichareonlyfoundinanimalcells.B.Acellwall,whichispresentinplantcellsbutnotinanimalcells.C.Mitochondria,whicharemoreabundantinplantcells.D.Ribosomes,whicharelargerinanimalcells.7.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"InvestigatingHeatTransfer"involvesusingametalrodandathermometer.Whichofthefollowingscenarioswouldbestdemonstrateconduction?A.Placingtherodinthesunandmeasuringthetemperaturechangeononeend.B.Heatingoneendoftherodandobservingthetemperatureriseontheotherend.C.Wrappingtherodininsulationandmeasuringthetemperaturedifferencebetweenends.D.Submergingtherodinwaterandmeasuringthetemperatureofthewater.8.Intheexperiment"GrowingCrystals,"asdetailedinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,studentsdissolvesaltinwaterandletitevaporate.Whichofthefollowingobservationswouldindicatesuccessfulcrystalgrowth?A.Thewaterbecomescloudyandremainsliquidafterseveraldays.B.Smallwhitecrystalsformonthesidesofthecontainerasthewaterevaporates.C.Thesaltdissolvescompletely,leavingnoresiduebehind.D.Thesolutionturnsintoathickpasteduetoexcessivesalt.9.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"TestingMagneticFields"involvesusingamagnetandironfilings.Whichofthefollowingresultswouldsupportthehypothesisthatmagnetshavetwopoles?A.Theironfilingsareattractedtothemagnetbutdonotmoveinanyspecificdirection.B.Theironfilingsclustermoredenselyattheendsofthemagnet,formingtwodistinctareas.C.Themagnetattractstheironfilingsequallyfromallsides,withnopreferenceforanydirection.D.Theironfilingsarerepelledbythemagnet,indicatingnomagneticattraction.10.Intheexperiment"ExploringLightRefraction,"asdescribedinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,studentsuseaglassofwaterandapenciltoobservehowlightbends.Whichofthefollowingobservationswouldbestdemonstraterefraction?A.Thepencilappearsstraightwhenplacedinairbutcurveswhenpartiallysubmergedinwater.B.Thepencilappearsshorterwhensubmergedinwatercomparedtowhenitisinair.C.Thepencilsinkstothebottomoftheglasswithoutanyvisiblebendingoflight.D.Thepencilreflectslightoffitssurface,creatingamirrorimageinthewater.二、填空题（总共10题，每题2分，共20分）1.Intheexperiment"WaterPurification"fromthe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6,studentsuse_______toremovesolidimpuritiesfromdirtywater.2.Theexperiment"GrowingPlantsinDifferentEnvironments"requiresstudentstorecordchangesinplant_______overtimetodeterminetheeffectsofsunlightandwater.3.Accordingtothe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6,anelectricalcircuitneedsa_______tocompletetheflowofelectricity.4.Intheexperiment"TestingtheStrengthofDifferentMaterials,"studentscomparehowmuchweighteachmaterialcanholdbefore_______.5.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"ExploringSoundWaves"demonstratesthatsoundcantravelthrough_______byusingatuningforkandabowlofwater.6.WhenobservingplantandanimalcellsunderamicroscopeinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,studentsnoticethatplantcellshavea_______surroundingthem.7.Theexperiment"InvestigatingHeatTransfer"involvesusingametalrodtoshowhowheatmovesthrougha_______fromoneendtoanother.8.Intheexperiment"GrowingCrystals,"studentsdissolvesaltinwaterandletit_______toformcrystals.9.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"TestingMagneticFields"usesironfilingstoshowthepresenceoftwopoles:_______and_______.10.Theexperiment"ExploringLightRefraction"demonstrateshowlightbendswhenitpassesfromonemediumtoanother,suchasfrom_______to_______.三、判断题（总共10题，每题2分，共20分）1.Accordingtothe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6,theexperiment"WaterPurification"showsthatboilingcancompletelyremoveallbacteriafromdirtywater.(True/False)2.Intheexperiment"GrowingPlantsinDifferentEnvironments,"plantsinshadegrowbetterthanplantsinsunlightbecausetheyrequirelessenergy.(True/False)3.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6statesthatacompleteelectricalcircuitmustincludeaswitchtocontroltheflowofelectricity.(True/False)4.Theexperiment"TestingtheStrengthofDifferentMaterials"provesthatplasticisalwaysstrongerthanwood.(True/False)5.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"ExploringSoundWaves"showsthatsoundcannottravelthroughair.(True/False)6.WhenobservingplantandanimalcellsinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,studentsfindthatbothtypesofcellshavemitochondria.(True/False)7.Theexperiment"InvestigatingHeatTransfer"demonstratesthatheatmovesfasterthroughmetalthanthroughair.(True/False)8.Intheexperiment"GrowingCrystals,"studentscangrowcrystalsfasterbyaddingmoresalttothesolution.(True/False)9.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"TestingMagneticFields"showsthatmagnetsonlyattractironbutdonotrepelothermetals.(True/False)10.Theexperiment"ExploringLightRefraction"provesthatlightalwaystravelsinastraightline.(True/False)四、简答题（总共8题，每题2分，共16分）1.Describethestepsinvolvedintheexperiment"WaterPurification"fromthe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6.2.Explainhowtheexperiment"GrowingPlantsinDifferentEnvironments"helpsstudentsunderstandtheimportanceofsunlightandwaterforplantgrowth.3.Accordingtothe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6,howdoesanelectricalcircuitwork,andwhatcomponentsarenecessaryforittofunction?4.Intheexperiment"TestingtheStrengthofDifferentMaterials,"whyisitimportanttocomparemultiplematerialsinsteadofjustone?5.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"ExploringSoundWaves"usesatuningforkandabowlofwater.Howdoesthissetupdemonstratethatsoundcantravelthroughwater?6.WhenobservingplantandanimalcellsinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,whataretwokeydifferencesbetweenthem?7.Explainhowtheexperiment"InvestigatingHeatTransfer"demonstratesconductionusingametalrod.8.Intheexperiment"GrowingCrystals,"whatfactorsinfluencethegrowthofcrystals,andhowcanstudentsoptimizetheprocess?五、应用题（总共8题，每题4分，共24分）1.Supposeyouareconductingtheexperiment"WaterPurification"fromthe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6.Describehowyouwouldsetuptheexperimentandwhatobservationsyouwouldmakeaftereachstep.2.Intheexperiment"GrowingPlantsinDifferentEnvironments,"younoticethattheplantsinsunlightaretallerandgreenerthanthoseinshade.Explainwhythismightbethecase,referringtothetextbook.3.Youaregivenabattery,twowires,andalightbulb.Describehowyouwouldconnectthemtocompleteanelectricalcircuit,basedonthe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"ElectricCircuits."4.Intheexperiment"TestingtheStrengthofDifferentMaterials,"youtestpaper,wood,andplastic.Whichmaterialdoyouexpecttoholdthemostweight,andwhy?Providearationalebasedonthetextbook.5.The2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6experiment"ExploringSoundWaves"involvesusingatuningforkandabowlofwater.Describehowyouwouldperformtheexperimentandwhatresultsyouwouldexpect.6.WhenobservingplantandanimalcellsinUnit6ofthe2026SichuanSuojiaoEditionGrade8EnglishBook2,younoticethatplantcellshaveacellwallwhileanimalcellsdonot.Explainthefunctionofthecellwallandwhyitisimportantforplants.7.Intheexperiment"InvestigatingHeatTransfer,"youuseametalrodtodemonstrateconduction.Describehowyouwouldsetuptheexperimentandwhatobservationsyouwouldmake.8.Supposeyouareconductingtheexperiment"GrowingCrystals"fromthe2026SichuanSuojiaoEditionGrade8EnglishBook2Unit6.Describehowyouwouldpreparethesolutionandwhatstepsyouwouldtaketogrowcrystals.【标准答案及解析】一、单项选择题1.C解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"WaterPurification"实验旨在探索通过过滤、沉淀和煮沸等方法净化脏水的过程。实验预期结果应是过滤和沉淀能去除部分杂质，但无法完全去除所有微生物，因此C选项最符合实验预期。A选项错误，因为净化后的水仍可能含有少量微生物；B选项错误，因为煮沸只是有效方法之一；D选项错误，因为自然水源未必已净化。2.B解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"GrowingPlantsinDifferentEnvironments"实验要求学生观察阳光、阴凉和限水环境下植物的变化。阳光对植物生长至关重要，因为植物进行光合作用需要阳光。B选项正确，因为阴凉环境缺乏阳光，植物会因无法进行光合作用而枯萎。A选项错误，因为阳光植物虽高但无特殊叶色变化；C选项错误，限水植物黄叶与阳光植物绿叶对比不直接说明阳光作用；D选项错误，所有环境植物生长速率相同与实验目的不符。3.D解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ElectricCircuits"实验要求使用电池、导线和灯泡完成电路。正确连接应为形成闭环，D选项正确。A选项错误，无导线无法形成电路；B选项错误，灯泡需在导线间形成完整回路；C选项错误，导线未连接无法形成电路。4.A解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"TestingtheStrengthofDifferentMaterials"实验比较纸、木、塑料承重能力。A选项正确，因为木材质地坚硬，能承受5kg重量，优于其他材料。B选项错误，木承重2kg低于塑料；C选项错误，塑料承重6kg最高；D选项错误，木和塑料承重相同与实验结果不符。5.B解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ExploringSoundWaves"实验使用调音叉和水碗。B选项正确，因为调音叉激起水波说明声波能通过水传播。A选项错误，调音叉在水中仍能发声；C选项错误，水波形成说明声波作用；D选项错误，调音叉在水中会沉但能产生声波。6.B解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ComparingPlantandAnimalCells"实验要求显微镜观察细胞差异。B选项正确，植物细胞有细胞壁，动物细胞无。A选项错误，叶绿素在植物细胞；C选项错误，线粒体在植物细胞；D选项错误，核糖体大小无此差异。7.B解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"InvestigatingHeatTransfer"实验使用金属棒演示传导。B选项正确，加热一端温度传导至另一端说明热传导。A选项错误，阳光加热为辐射；C选项错误，绝缘阻碍传导；D选项错误，水浴为对流。8.B解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"GrowingCrystals"实验溶解盐于水并蒸发。B选项正确，水蒸发后盐结晶。A选项错误，水变浑浊未结晶；C选项错误，盐完全溶解无残留；D选项错误，溶液变稠未结晶。9.B解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"TestingMagneticFields"实验使用铁粉显示磁极。B选项正确，铁粉在磁极两端聚集形成两区，证明两极存在。A选项错误，铁粉仅被吸引未显示极性；C选项错误，铁粉均匀分布无极性；D选项错误，铁粉被排斥非磁性。10.A解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ExploringLightRefraction"实验使用铅笔和水杯。A选项正确，铅笔部分浸入水中弯曲说明光折射。B选项错误，铅笔长度未变化；C选项错误，铅笔下沉未折射；D选项错误，铅笔反射非折射。二、填空题1.滤网解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"WaterPurification"实验使用滤网去除固体杂质。2.叶片解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"GrowingPlantsinDifferentEnvironments"实验记录叶片变化以判断阳光和水分影响。3.电源解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ElectricCircuits"实验需电源完成电路。4.折断解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"TestingtheStrengthofDifferentMaterials"实验比较材料承重能力至折断。5.水解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ExploringSoundWaves"实验用水碗演示声波传播。6.细胞壁解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，植物细胞有细胞壁，动物细胞无。7.固体解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"InvestigatingHeatTransfer"实验用金属棒演示热通过固体传导。8.蒸发解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"GrowingCrystals"实验通过盐溶液蒸发结晶。9.南极/北极解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"TestingMagneticFields"实验显示磁极。10.空气/水解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ExploringLightRefraction"实验演示光从空气到水折射。三、判断题1.False解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"WaterPurification"实验显示煮沸能去除部分细菌，但未必完全。2.False解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，阳光植物因光合作用生长更好，阴凉植物因缺乏阳光生长较差。3.False解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ElectricCircuits"实验无需开关，只需闭合回路。4.False解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"TestingtheStrengthofDifferentMaterials"实验结果因材料不同而异，塑料未必总比木强。5.False解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ExploringSoundWaves"实验显示声波能通过空气传播。6.True解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，植物和动物细胞均有线粒体。7.True解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"InvestigatingHeatTransfer"实验显示金属传导热快于空气。8.False解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"GrowingCrystals"实验需控制盐量，过多盐会抑制结晶。9.False解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"TestingMagneticFields"实验显示磁铁能吸引铁并排斥其他磁性金属。10.False解析：根据2026年四川省苏教版八年级英语下册第6单元实验探究题，"ExploringLightRefraction"实验显示光在介质间弯曲，非直线传播。四、简答题1."W