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ID:33192199
大小:49.00 KB
页数:4页
时间:2019-02-21
《the science of water:水科学》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、TheScienceofWaterIntroductionMyinvestigativequestionwas:Doesthetemperatureofwateraffectthetimeittakesforthewatertofreeze?HypothesisMaterials1.Water2.3containers(similar)3.CandyThermometer(tomeasuretemperatureofwater)4.Watch(tomeasuretimeittakesforwatertofreeze)5.Tablespoon(tomeasuret
2、heamountofwatertoputinthecontainer)6.Microwave(toheatwater)7.Freezer(tofreezewater)Research/SourcesofInformationBeforeIstarttheexperimentIneedtofindout:·thetemperatureatwhichwaterfreezesandboils·thetemperatureofthefreezer·theroomtemperature·theproceduresandmaterials.Ialsodidthefollow
3、ingexperimentasbackgroundresearch.1.Idecidedtouseaclocktimertomeasurethetimeittakesforthewatertofreezeandapaperknifetofeelifthewaterinthebottleshasfrozenandbecomesolidice.2.Itookfourwhiteglassesthatwereallthesamekind.3.Ipouredonecupoftapwaterintooneglassandletitsittheresoitcouldbecom
4、eroomtemperaturewater.4.Iusedadifferentglasstomakeboilingwater.IusedonecupofwaterandIputitinthemicrowavetoboil.5.Ihadkeptthewaterinthemicrowaveforthreeminutes.WhenIhadtakenitoutthewaterwasboiling.BeforeIhadputthewaterIhadmadeapredictionthatthewaterwouldturnintosteam.WhenItookthewater
5、outithadn'tturnedintosteamthatshowedthatmypredictionwaswrong.6.IwasgoingtouseathermometerbutthenIrealizedthatthethermometerwasonlyforhumans.Thethermometerwouldonlygohighas106Fandboilingwateris212F.7.Also,IrealizedthatthetimerIhadpickedwon'tworkbecauseitgoesdownandIneedonethatgoesup.8
6、.SoIonlyputintwoglassesofwaterintherefrigeratorandIdidn'ttimethem.Thishelpedmeidentifythecorrectproceduresandinstrumentstouseinmyexperiment.IusedthebookSciencewithwatertohelpmeidentifythedifferenttemperaturesatwhichwaterboilsandfreezes.VocabularyThetemperatureofthewaterinfourbottlesa
7、tthestartoftheexperimentisthemanipulatedvariable.Thetimeittakesforthewaterinthefourbottlestofreezeistherespondingvariable.Theconditionsoftheexperimentarethecontrolledvariables.Inmyexperiment,thecontrolledvariablesare:1.theamountofwaterinthefourbottles2.thekindofbottlesthatareused3.th
8、etemperature
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