igcse分类汇编上册

OnlyforinternalCIEIGCSEQuestionsCompiledfromPastPart Hintson Section1: Speed,velocityand Massweight WorkEnergy Thermal Kineticmodelof Heat Evaporation,meltingand Latentheatand Propertiesofwaves,includinglightand Generalwave Reflectionof Refractionof Thinconverging Dispersionof Electromagnetic Section2:Structrued and Massweightand Workand Momentand Thermal Kineticmodelof Heat Evaporation,meltingand Latentheatand Waves:lightand Generalwave Lightandoptic HintsonCOREand1.1Lengthand-useanddescribetheuseofrulesandmeasuringcylinderstodeterminealengthoravolume-useanddescribetheuseofamechanicalmethodforthemeasurementofasmalldistance-useanddescribetheuseofclocksanddevicesformeasuringanintervaloftime-measureanddescribehowtomeasureashortintervaloftime(includingtheperiodofapendulum)-definespeedandcalculatespeedfromtimetotaldistance-plotandinterpretaspeed/timegraphoradistance/time-recogniselinearmotionforwhichtheaccelerationisconstantandcalculatetheacceleration-recognisefromtheshapeofaspeed/timegraphwhenabodyis(a)atrest,(b)movingwithconstantspeed,(c)movingwithchangingspeed-recognisemotionforwhichtheaccelerationisnot-calculatetheareaunderaspeed/timegraphtodeterminethedistancetravelledformotionwithconstantacceleration-demonstratesomeunderstandingthataccelerationisrelatedtochanging-statethattheaccelerationoffallforabodyneartotheEarthis-describequalitativelythemotionofbodiesfallinginauniformgravitationalfieldwithandwithoutair referencetoterminalvelocity)1.3Massandshowfamiliaritywiththeideaofthemassofademonstrateanunderstandingthatmassisapropertywhich'resists'changeinmotion-statethatweightisa-demonstrateunderstandingthatweights(andhencemasses)maybecomparedusingabalance-describe,andusetheconceptof,weightastheeffectofagravitationalfieldonamass1.4-describeanexperimenttodeterminethedensityofaliquidandofaregularlyshapedsolidandmakethenecessarycalculation-describethedeterminationofthedensityofanirregularlyshapedsolidbythemethodofdiscementandmakethenecessary (a)Effectsof-statethatamayproduceachangeinsizeandshapeofa-plotextension/loadgraphsanddescribetheassociatedexperimental-绘制extension/load-stateHooke’sLawandrecallandusetheexpressionF=k-recognisethesignificanceoftheterm'limitofproportionality'foranextension/loadgraph置-describethewaysinwhich maychangethemotionofa-findtheresultantoftwoor sactingalongthesame-recallandusetherelationbetween ,massandacceleration(includingthedirection)-describe,qualitatively,motioninacurvedpathduetoaperpendicular(F=mv2/risnotrequired)(b)Turningdescribethemomentofaasameasureofitsturningeffectandgiveeverydayexamplesperformanddescribeanexperiment(involvingverticals)toverifythatthereisnonetmomentonabodyinequilibrium-describe,qualitatively,thebalancingofabeamabouta-applytheideaofopposingmomentstosimplesystemsin -statethat,whenthereisnoresultantandnoresultantturningeffect,asystemisinequilibrium(d)Centreof-performanddescribeanexperimenttodeterminethepositionofthecentreofmassofanelamina-describequalitativelytheeffectofthepositionofthecentreofmassonthestabilityofsimpleobjects-demonstrateanunderstandingofthedifferencebetweenscalarsandvectorsandgivecommonexamples1.6Energy,workand(a)-demonstrateanunderstandingthatanobjectmayhaveenergyduetoitsmotionoritsposition,andthatenergymaybetransferredandstored-giveexamplesofenergyindifferentforms,includingkinetic,gravitational,chemical,strain,nuclear,internal,electrical,lightandsound-giveexamplesoftheconversionofenergyfromoneformtoanotherofitstransferfromonceto-applytheprincipleofenergyconservationtosimplerecallandusetheexpressionsk.e.=½mv2andp.e.=(b)Energy-describehowelectricityorotherusefulformsofenergymaybeobtainedchemicalenergystoredinwater,includingtheenergystoredinwaves,intides,andinwaterbehindhydroelectricdamsheatandlightfromthe(i)中的化学-showanunderstandingthatenergyisreleasedbynuclearfusionintheSun(c)-relate,withoutcalculation,workdonetothemagnitudeofaandthedistancemoved-describeenergychangesintermsofwork-recallanduseW=Fd=(d)-relate,withoutcalculation,powertoworkdoneandtimetaken,usingappropriateexamples-recallandusetheequationP=E/tinsimple1.7-relate,withoutcalculation,pressureto andarea,usingappropriate-recallandusetheequationp=-describethesimplemercurybarometeranditsuseinmeasuringatmosphericpressure-relate,withoutcalculation,thepressurebeneathaliquidsurfacetodepthandtodensity,usingappropriateexamples-useanddescribetheuseofa-recallandusetheequationp=ThermalSimplekineticmolecularmodelof(a)Statesof-statethedistinguishingpropertiesofsolids,liquidsand-describequalitativelythemolecularstructureofsolids,liquidsand-showanappreciationthatmassiveparticlesmaybemovedbylight,fast-movingmolecules-interpretthetemperatureofagasintermsofthemotionofits-demonstrateanunderstandingofhowtemperature,surfaceareaanddraughtoverasurfaceinfluenceevaporation-describequalitativelythepressureofagasintermsofthemotionofits-describequalitativelytheeffectofachangeoftemperatureon-pressureofagasatconstant-showanunderstandingoftherandommotionofparticlesinasuspensionasevidenceforthekineticmolecularmodelofmatter-describethismotion(sometimesknownasBrownianmotion)intermsofrandommolecularbombardment(c)-describeevaporationintermsoftheescapeofmore-energeticmoleculesfromthesurfaceofaliquid-relatethechangeinvolumeofagastochangeinpressureappliedtothegasatconstanttemperature2.2Thermal(a)Thermalexpansionofsolids,liquidsand-identifyandexinsomeoftheeverydayapplicationsandconsequencesofthermalexpansion-describequalitativelytheeffectofachangeoftemperatureonthevolumeofagasatconstantpressure -appreciatehowaphysicalpropertywhichvarieswithtemperaturemaybeusedforthemeasurementoftemperatureandstateexamplesofsuch-recognisetheneedforandidentifyfixed-describethestructureofathermocoupleandshowunderstandingofitsuseformeasuringhightemperaturesandthosewhichvary-describethestructureandactionofliquidin-glass-relateariseintemperatureofabodytoanincreaseininternal-showanunderstandingofthetermthermal-describeanexperimenttomeasurethespecificheatcapacityofa(d)Meltingand-describemeltingandboilingintermsofenergyinputwithoutachangein-statethemeaningofmeltingpointandboiling-describeanexperimenttomeasurespecificlatentheatsforandforice-usethetermslatentheatofvaporizationandlatentheatoffusionandgiveamolecularinterpretationoflatentheat2.3Transferofthermal(a)-describeexperimentstodemonstratethepropertiesofgoodandbadconductorsofheat(b)-relateconvectioninfluidstodensitychangesanddescribeexperimentstoillustrateconvection(c)-describeexperimentstoshowthepropertiesofgoodandbademittersandgoodandbadabsorbersofinfra-redradiation energytransfer-identifyandexinsomeoftheeverydayapplicationsandconsequencesofconduction,convectionandradiation3.Propertiesofwaves,includinglightandsound -describewhatismeantbywavemotionasillustratedbyvibrationinropes,springsandbyexperimentsusingwaterwaves-usetheterm-givethemeaningofspeed,frequency,wavelengthand-distinguishbetweentransverseandlongitudinalwavesandgivesuitable-interpretreflection,refractionanddiffractionusingwave-describetheuseofwaterwavestoreflectionatanerefractionduetoachangeofdiffractionproducedbywideandnarrow3.2(a)Reflectionof-describetheformation,andgivethecharacteristics,ofanopticalimagebyanemirror-usethelawangleofincidence=angleof(b)Refractionof-describeanexperimentaldemonstrationoftherefractionof-recallandusethedefinitionofrefractiveindexnintermsof-recallandusetheequationsini/sinr=-识记并运用定律sini/sinr=-usetheterminologyfortheangleofincidenceiandangleofrefractionranddescribethepassageoflightthroughparallel-sidedtransparent-givethemeaningofcritical-describetheactionofathinconverginglensonabeamof-drawraydiagramstoillustratetheformationofavirtualimagebyasinglelens-usethetermprincipalfocusandfocal-drawraydiagramstoillustratetheformationofarealimagebyasingle-useanddescribetheuseofasinglelensasamagnifying-giveaqualitativeaccountofthedispersionoflightasillustratedbytheactiononlightofaglassprism-usetheterm -describethemainfeaturesoftheelectromagneticspectrumandstatethatalle.m.wavestravelwiththesamehighspeedinvacuum3.3-describetheproductionofsoundbyvibrating-describethelongitudinalnatureofsound-statetheorderofmagnitudeofthespeedofsoundinair,liquidsand-statetheapproximaterangeofaudible-showanunderstandingthatamediumisrequiredinordertotransmitsoundwaves-describeanexperimenttodeterminethespeedofsoundin-relatetheloudnessandpitchofsoundwavestoamplitudeand-describehowthereflectionofsoundmayproduceanSection1:MCQQuestionsfromPast☺Speed,velocityand [Nov.02]Astonefallslyfromthetopofacliffintothesea.Airmaybeignored.Whichgraphshowshowtheaccelerationofthestonevarieswithtimeasit[Nov.02]Achildisstandingonthetformofastation,watchingtheAtraintravellingat30m/stakes3stopassthechild.Whatisthelengthofthetrain?A10 B30 C90 D270[June.05]Acaracceleratesfromtrafficlights.Thegraphshowshowthecar’sspeedchangeswithtime.HowfardoesthecartravelbeforeitreachesasteadyA10 B20 C100 D200[Nov.04]Whichspeed/timegraphappliestoanobjectat[Nov.05]ThegraphrepresentspartofthejourneyofaWhatdistancedoesthecartravelduringthispartoftheA150 B300 C600 D1200[June.04]WhichstatementaboutthemassofafallingobjectisAItdecreasesastheobjectBItisequaltotheweightoftheCItismeasuredinDItstaysthesameastheobject[Nov.06]Acyclistisridingalongaroadwhenananimalrunsinfrontofhim.Thegraphshowsthecyclist’smotion.HeseestheanimalatP,startstobrakeatQandstopsatR.WhatisusedtofindthedistancetravelledafterheappliestheAtheareaunderlineBtheareaunderlineCthegradientoflineDthegradientofline[Nov.06]AcartravelsalongtheroutePQRSTin30WhatistheaveragespeedoftheA10km/B20km/C30km/D60km/[Nov.05]Amancrossesaroad8.0mwideataspeedof2.0m/HowlongdoesthemantaketocrosstheA4.0 B6.0 C10 D16[June.06]ThegraphrepresentsthemovementofabodyacceleratingfromAfter5secondshowfarhasthebodyA2 B10 C25 D50[Nov.04]Aracingcarisfittedwithanon-boardcomputer.Everytimethecarpassesthestartingline,thecomputerrecordsthedistancetravelledinthenext2seconds.Whichsetofdatashowsthatthecarisincreasinginspeedduringthe2seconds?[June.04]Thediagramshowsthespeed-timegraphforanobjectmovingatconstantWhatisthedistancetravelledbytheobjectinthefirst3A B C D[June.04]Asmallsteelballisdroppedfromalowbalcony.Ignoringair,whichstatementdescribesitsmotion?AItfallswithconstantBItfallswithconstantCItfallswithdecreasingDItfallswithdecreasing[June.03]Atunnelhasalengthof50km.Acartakes20mintotravelbetweenthetwoendsofthetunnel.Whatistheaveragespeedofthecar?A2.5km/ B16.6km/ C150km/ D1000km/[Nov.03]AtraintravelsalongatrackfromAytowntoBeetown.ThemapshowstheThedistancetravelledbythetrainbetweenthetownsis210km.Itmovesatanaveragespeedof70km/h.HowlongdoesthejourneyAlessthan1/3hours,becausethejourneyisnotinastraightBexactly1/3Cexactly3Dmorethan3hours,becausethejourneyisnotinastraight[June.03]Thediagramshowsaspeed-timegraphforabodymovingwithconstantWhatisrepresentedbytheshadedareaundertheABCD☺Massweight[Nov.02]WhichofthefollowingstatementsisAMassandweightaredifferentnamesforthesameBThemassofanobjectisdifferentiftheobjectistakentotheCTheweightofacarisoneof sactingontheDTheweightofachocolatebarismeasuredin[June.04]Theweightsoffourobjects,1to4,arecomparedusingaWhichobjectistheAobject Bobject Cobject Dobject[June.05]TwoblocksXandYarecedonabeamasshown.Thebeambalancesonapivotatitscentre.WhatdoesthisshowaboutXandATheyhavethesamemassandthesameBTheyhavethesamemassandthesameCTheyhavethesamevolumeandthesameDTheyhavethesamevolumeandthesameThemassesofameasuringcylinderbeforeandafterpouringsomeliquidintoitareshowninthediagram.[Nov.05]Whatisthe thattheEarthexertsonanAthedensityoftheBthemassoftheCthevolumeoftheDtheweightofthe[June.04]WhichofthefollowingisaunitofAcm3/ B C Dkg[June.05]WhichstatementisAThemassofabottleofwaterattheNorthPoleisdifferentfromitsmassattheBThemassofabottleofwaterismeasuredinCTheweightofabottleofwateranditsmassarethesameDTheweightofabottleofwaterisoneofthesactingonWhatisthenamegiventothethatstretchestheABCD[Nov.04]Thediagramshowssomeliquidinameasuringcylinder.Themassoftheliquidis16g.WhatisthedensityoftheA320g/ B36g/cm3C1.25g/ D0.8g/[Nov.05]Thesamemassoffourdifferentliquidsiscedinsomemeasuringcylinders.Whichmeasuringcylindercontainstheliquidwiththegreatestdensity?[June.03]WhichstatementisAMassisa,measuredinBMassisa,measuredinCWeightisa,measuredinDWeightisa,measuredin[Nov.06]AstudentpoursliquidintoameasuringThestudentrecordsthevolumeoftheliquidfromthescaleonthemeasuringcylinder.HethenputsthemeasuringcylindercontainingtheliquidonabalanceandrecordstheWhatelseneedstobemeasuredbeforethedensityoftheliquidcanbeAthedepthoftheliquidinthemeasuringBthemassoftheemptymeasuringCthetemperatureoftheliquidinthemeasuringDthevolumeoftheemptymeasuring[June.03]Threechildren,X,YandZ,areusingasee-sawtocomparetheirWhichlineinthetableshowsthecorrectorderofthechildren’s[June.03]Whatapparatusisneededtodeterminethedensityofaregularly-shapedAabalanceandaBabalanceandameter(springCameasuringcylinderandaDameasuringcylinderanda[June.06]A measuresthelength,width,heightandmassofarectangularmetalblock.Whichofthesemeasurementsareneededinordertocalculatethedensityofthemetal?AmassBheightandmassClength,widthandheightDlength,width,heightand[Nov.02]Themassesofameasuringcylinderbeforeandafterpouringsomeliquidareshowninthediagram.Whatisthedensityofthe[Nov.06]Thediagramshowsfourblocks,eachmadeofglassofdensity2.6g/cm3.Thetopofeachblockhasanareaof1cm2.Whichblockhasamassof13g?[Nov.03]Themassofafullbottleofcookingoilis1.30kg.Whenexactlyhalfoftheoilhasbeenused,themassofthebottleplustheremainingoilis0.90kg.Whatisthemassofthebottle?A0.40 B0.50 C0.65 D0.80[Nov.03]Astudenttriestofindthedensityofametalblock.Firsthemeasurestheweightwithameter(springbalance).Nexthemeasuresthesidesoftheblockusingarule,inordertocalculatethevolumeoftheblock.Finallyhedividestheweightbythevolumetofindthedensity.Thestudenthasmadeamistake.WhydoeshismethodnotgivetheADensityisvolumedividedbyBHeshouldhavemeasuredthesurfacearea,nottheCHeshouldhaveusedthemassinhiscalculation,nottheDWeightisnotmeasuredwithameter(spring [Nov.06]Anewtonisaunit .WhichtyismeasuredinABCD[June.06]Belowarefourstatementsabouttheeffectsofsonobjects.Threeofthestatementsarecorrect.Whichstatementisincorrect?AAcanchangethelengthofanBAcanchangethemassofanCAcanchangetheshapeofanDAcanchangethespeedofan[Nov.02]InwhichofthesesituationsisnoresultantAacarchangingBacarmovinginastraightlineatasteadyCacarslowingDacarspeeding[Nov.04]Astudentcarriesoutanexperimenttoplotanextension/loadgraphforaspring.Thediagramsshowtheapparatusatthestartoftheexperimentandwithaloadadded.WhatistheextensioncausedbytheA B Cy+ Dy–[June.05]Agirlandaboyarepullinginoppositedirectionsonarope.Thesactingontheropeareshowninthediagram.WhichsinglehasthesameeffectasthetwosA50NactingtowardstheB350NactingtowardstheC50NactingtowardstheD350Nactingtowardsthe[June.05]Objectswithdifferentmassesarehungona10cmspring.Thediagramshowshowmuchthespringstretches.Theextensionofthespringisdirectlyproportionaltothemasshungonit.WhatisthemassofobjectM?A110 B150 C200 D300[June.06]Twosactonanobject.Inwhichsituationisitimpossiblefortheobjecttobeinequilibrium?AThetwosactinthesameBThetwosactthroughthesameCThetwosareofthesameDThetwosarethesame[June.06]ThediagramshowsfourmodelsofbusescedondifferentHowmanyofthesemodelswillfallA B C D[Nov.04]Threehorizontalsactonacarthatismovingalongastraight,levelWhichcombinationofswouldresultinthecarmovingatconstant[June.03]Aspringissuspendedfromastand.Loadsareaddedandtheextensionsaremeasured.Whichgraphshowstheresultofplottingextensionagainst[Nov.03]ThetablebelowshowsthelengthofawireastheloadonitisWhichgraphcorrectlyshowstheextensionofthewireplottedagainst[June.04]Anexperimentiscarriedouttomeasuretheextensionofarubberbandfordifferentloads.Theresultsareshownbelow.WhichfigureismissingfromtheA B C D[Nov.03]Twosactonanobject.Inwhichsituationisitimpossiblefortheobjecttobeinequilibrium?AThetwosactinthesameBThetwosactthroughthesameCThetwosareofthesameDThetwosarethesame☺[Nov.06]Aheavybeamisrestingontwosupports,sothattherearethree actingonit.Thebeamisinequilibrium.WhichstatementisAAllthesareequalinBThesareinonedirectionandtheirturningeffectsareintheoppositeCTheresultantiszeroandtheresultantturningeffectisDThetotalupwardistwicethetotaldownward[Nov.06]Thediagramshowssectionsoffourobjectsofequalmass.Thepositionofthecentreofmassofeachobjecthasbeenmarkedwithacross.Whichobjectisthemoststable?[Nov.05]Inanexperiment,fiveidenticalbagsofricearebalancedbya10kgTwobagsofriceareaddedtotheotherfive.Whatmasswillnowbalancethebags?A3.5 B7.0 C10 D14[Nov.02]Inanexperiment,sixidenticalbagsofflourarebalancedbya9kgTwobagsofflourareremoved.WhatmasswillbalancetheremainingA3 B6 C7 D9[June.06]Asimplebalancehastwopanssuspendedfromtheendsofarmsofequallength.Whenitisbalanced,thepointerisat0.Fourmasses(intotal)arecedonthepans,withoneormoreonpanXandtherestonpanY.Whichcombinationofmassescanbeusedtobalancethepans?A1g,1g,5g,10B1g,2g,2g,5C2g,5g,5g,10D2g,5g,10g,10[Nov.05]Thediagramshowsaflatmetaltethatmaybehungfromanailsothatitcanrotateaboutanyoffourholes.Whatisthesmallestnumberofholesfromwhichtheflatmetalteshouldbehunginordertofinditscentreofgravity?A B C D[Nov.05]TwoequalsFactoneachoffournks.Whichnk[Nov.03]Abeamispivotedatitscentre.Twomassesaresuspendedatequaldistancesfromthepivotasshowninthediagram.WhichstatementisAIfXhasamassofexactly2kg,itwillBIfXhasamassoflessthan2kg,itwillCIfXhasamassofmorethan2kg,itwillDIfXhasamassofmorethan2kg,itwill[June.04]ApieceofcardhasitscentreofmassatM.Whichdiagramshowshowithangswhensuspendedbyathread?[June.03]Astudentusesastandandclamptoholdaflaskofliquid.Whichdiagramshowsthemoststablearrangement?[Nov.02]Thediagramshowssectionsoffourobjects,allofequalmass.Theofthecentreofmassofeachobjecthasbeenmarkedwithacross.Whichobjectisthemoststable?☺WorkEnergy[Nov.02]AcaracceleratesalongaroadasitrisesWhichenergychangesaretaking[Nov.03]Alargeelectricmotorisusedtoliftacontaineroffaship.Whichofthefollowingvaluesareenoughtoallowthepowerofthemotortobecalculated?AthemassofthecontainerandthedistanceBtheusedandthedistanceCthecurrentusedandtheworkDtheworkdoneandthetimeAlaboureronabuildingsiteliftsaheavyconcreteblockontoalorry.Hethenliftsalightblockthesamedistanceinthesametime.Whichofthefollowingistrue?[Nov.04]Achildpushesatoycaralongalevelfloorandthenletsitgo.Asthecarslowsdown,whatisthemainenergychange?AfromchemicaltoBfromchemicaltoCfromkinetictogravitationalDfromkineticto[Nov.03]Atidalpowerstationismadebybuildingabarrageacrossthemouthofariver.Athightidetheseawateristrappedbehindthebarrage.Atlowtidethewaterisallowedtoflowbackintotheseathroughaturbine.Whatistheusefulenergychangeinatidalpowerstation?Aelectricalenergy→energyofpositionBelectricalenergy→energyofmotionCenergyofmotion(kinetic)→energyofpositionDenergyofposition(potential)→electrical[June.06]WhichformofenergydowereceivedirectlyfromtheABCD[Nov.05]Whichtypeofpowerstationdoesnotusefromboilingwatertogenerateelectricity?ABCDoil-[Nov.06]WhichsourceofenergyusestheproductionoftogenerateABCD[June.05]WhatisdesignedtochangeelectricalenergyintokineticA BC D[Nov.05]AmanstandingatthetopofacliffthrowsaWhichformsofenergydoesthestonehaveatXandat[June.04]ThediagramshowsamandivingintoWhichformofenergyisincreasingasheABCD[June.05]Aballisreleasedfromrestandrollsdownatrackfromthepositionshown.Whatisthefurthestpositiontheballcouldreach?[Nov.06]AcyclisttravelsdownahillfromrestatpointXwithoutpedalling.TheapplieshisbrakesandthecyclestopsatpointWhichenergychangeshavetakencebetweenXandAkinetic→internal(heat)→gravitationalBkinetic→gravitationalpotential→internalCgravitationalpotential→internal(heat)→Dgravitationalpotential→kinetic→internal[Nov.04]Thediagramshowsacyclistridingalongahillyroad.Atwhichpositiondoesthecyclisthavetheleastgravitational(potential)energy?[June.04]AboyandagirlrunupahillinthesameTheboyweighsmorethanthegirl.WhichstatementistrueaboutthepowerATheboyproducesmoreBThegirlproducesmoreCTheybothproducethesameDItisimpossibletolwhoproducesmore[Nov.02]Inacarengine,energystoredinthefuelisconvertedintothermal(heatenergy)andenergyofmotion(kineticenergy).Inwhichformistheenergystoredinthefuel?ABCD[June.03]Whatisthesourceoftheenergyconvertedbyahydro-electricpowerAhotBfallingCD[June.03]Alaboureronabuildingsiteliftsheavyconcreteblocksontoalorry.Lighterblocksarenowliftedthesamedistanceinthesametime.Whathappenstotheworkdoneinliftingeachblockandthepowerexertedbythelabourer?☺WhichstatementisATheofthepinislargeronthefingerthanontheBTheofthepinislargeronthethumbthanontheCThepressureofthepinislargeronthefingerthanontheDThepressureofthepinislargeronthethumbthanonthe[Nov.04]LiquidXhasadensityof1010kg/m3.LiquidYhasadensityof950kg/m3.Theliquidsarepouredintotubesasshown.Whichtubehasthegreatestpressureonitsbase?[Nov.05]Fourblocks,eachweighing10N,restonahorizontaltable.Whichblockappliesthegreatestpressureonthetable?[June.06]Thediagramshowsathicksheetofglass.Whichedgemustitstandontocausethegreatestpressure?[Nov.06]Topreventacementmixersinkingintosoftground,themixeriscedonalargeflatboard.WhydoesthispreventthemixerAThelargeareadecreasesthepressureontheBThelargeareaincreasesthepressureontheCThelargeareadecreasestheweightontheDThelargeareaincreasestheweightonthe[Nov.06]ThediagramshowsasimplemercuryTheatmosphericpressureincreases.WhichdistanceA B C D[Nov.05]ThediagramshowsamercuryWhichdistanceisusedtocalculatethepressureoftheA25 B75 C80 D100[Nov.02]ThediagramshowsasimplemercuryIfatmosphericpressureincreases,whathappenstolevelXandtolevel[June.04]Thediagramshowsasimplemercurybarometer.Thebarometerreadinghcmofmercury.WhatisthepressureatAapproximayBatmosphericCatmosphericpressure+hcmofDhcmof[June.04]TwoboysXandYeachhavethesametotalweightandarestandingonsoftground.Whichboyismorelikelytosinkintothesoftgroundand[June.05]Awatermanometerisusedtomeasurethepressureofagassupplytoahouse.Itgivesareadingofhcmofwater.WhyisitbettertousewaterratherthanmercuryinthisAhwouldbetoolargeifmercurywereBhwouldbetoosmallifmercurywereCThetubewouldneedtobenarrowerifmercurywereDThetubewouldneedtobewiderifmercurywere[June.03]ThediagramshowsaninstrumentusedtomeasuregasWhatistheinstrumentABCD[June.03]Thediagramsshowtwodiversswimmingintheseaandtwodiversswimminginfreshwater.Seawaterismoredensethanfreshwater.Onwhichdiveristherethegreatestpressure?[June.05]Afarmerhastwocarts.Thecartshavethesameweight,butonehasfournarrowwheelsandtheotherhasfourwidewheels.Inrainyweather,whichcartsinkslessintosoftground,and[Nov.03]Whichdiagramshowsthechildexertingleastpressureonthe[Nov.03]Amanometerisbeingusedtomeasurethepressureofthegasinside.A,B,CandDshowthemanometeratdifferenttimes.Atwhichtimeisthegaspressureinsidethegreatest?[Nov.02]Fourflowervaseshavecircularbases.Theyarefilledwithwatersothattheyallhavethesameweight.Whichvaseexertsthegreatestpressureonitsbase?ThermalThermal☺Kineticmodelof[Nov.02]Somegasinasealedsticbagiscedinarefrigeratortocooldown.Howdothegasmoleculesbehavewhenthishappens?ATheymovemorequicklyandarecloserBTheymovemorequicklyandarefurtherCTheymovemoreslowlyandarecloserDTheymovemoreslowlyandarefurther[Nov.05]Asuspensionofpollengrainsinwaterisobservedunderamicroscope.Thepollengrainsareseentobemovingallthetime.Whichdiagramillustratesthis[June.06]Brownianmotionisseenbylookingatsmokeparticlesthroughamicroscope.HowdothesmokeparticlesmoveinBrownianmotion?AallinthesameBatCinDvibratingaboutfixed[June.06]Drivingacarraisesthetemperatureofthetyres.Thiscausesthepressureoftheairinthetyrestoincrease.Whyisthis?AAirmoleculesbreakuptoformseparateBAirmoleculesexpandwiththeriseinCThebetweentheairmoleculesDThespeedoftheairmolecules[Nov.02]Ameasuredmassofgasiscedinacylinderatatmosphericpressureandisthenslowlycompressed.Ifthetemperatureofthegasdoesnotchange,whathappenstothepressureoftheAItdropstoBItdecreases,butnottoCItstaystheDIt[Nov.06]Waterspilledonthegroundonahotdayevaporates.Whichdiagramrepresentsthechangeinarrangementoftheparticlesinthewaterasitevaporates?[June.03]Twometalboxescontainingairarestandinginaroom.BoxXisontopofaheater.BoxYisonabench.Theboxesareleftforalongtime.Whichlineinthetablebestdescribestheaveragespeedofthemoleculesintheboxboxffszsfzf[Nov.03]Whichlineinthetablecorrectlydescribeswhetherthemoleculesofasolid,liquidandgasaremovingorstationary?[Nov.04]Thediagramrepresentsgasmoleculescontainedinacylinder.Thepistonismovedslowlydownwardsandthetemperatureofthegasstaysthesame.WhydoesthepressureofthegasAThemoleculescollideharderwiththeBThemoleculescollidemoreoftenwiththeCThemoleculesmovemoreDThenumberofmolecules[June.05]Viewedthroughamicroscope,verysmallparticlescanbeseenmovingwithBrownianmotion.Whichlineinthetableiscorrect?[Nov.03]Thediagramshowshowtheatomsinasubstancerearrangethemselvesduringachangeofstate.WhichchangeofstateisAgastoBliquidtoCliquidtoDsolidto[Nov.06]Agascylinderisleftoutsideonasunnyday.TheSunheatsthegasinsidethecylinder.Whathappenstothegasmolecules?ATheycollidelessBTheyCTheymovecloserDTheymovemore[June.04]Astudentceshisthumbfirmlyontheoutletofabicyclepump,tostoptheaircomingout.Whathappenstothepressureandtothevolumeofthetr