unit16reading课件
日期：2010-01-05 01:10
printer，politician，abookofsmartsayingsandfactsLibrarian，HediscoveredwhyallthingsfalldowntoearthGravityDead-leafmimickatydidEvolutionBenjaminFranklin(1706-1790)RegardedastheUSfoundingfatherAuthorofPoorRichard’sAlmanac，inventorandcreativemindWhat’stheweatherlikewhenpeopleareflyingkites?ReadthefollowingstatementsanddecideiftheyareTorFIn1752scientistsalreadyknewwhatelectricityisFranklinwashelpedbyafriendtodotheexperimentFranklinmadethekiteofsilkbecausewetsilkdoesnotconductelectricityAcondenserwasusedintheexperimenttostoreelectricityThekeytiedtothestringwasputintothedoortostopthekitefromflyingawayTFTFFReadthepassageagainandfinishthefollowingexperimentreportTitleExperimenterKiteexperimentFranklinPurposeMaterialsToprovelightningelectricityInstructions1Makeakite;DescriptionHairs…standup;anelectricshock…Results2Fixapieceofmetalto…3Fastenakeyto…4Tieasilkribbonto…5Flythekitewhen…thingsweneedakitebadweather(thunderstorm)akeyacondenserashedstringsasilkribbonK，
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