Homework#21GivenApril19th~DueMay1st
Step1: Studyforyourexamonvolcanoes.(Youwillnotbetestedontrees).
GobackandcheckundertheMOREtabatscienceinformationstation.comandclickonWHAT’SHAPPENINGforallscienceexamdates.
Step2: Getapencilorskinnytwig;aluminumbakingpanorbakingtrayorpietin;
measuringcup;bagofflour;bottleofcookingoil;containerofsalt;packetofquick-risingyeast;containerofhydrogenperoxide;foodcoloring;areallybigbowl;andasmall,emptysodabottle(16oz.orless)
Step3: BuildavolcanoaroundthesodabottlewithPlayDoormodelingclay,butbesureto
buildwithinthealuminumpan,bakingtrayorpietin.NOTE:à IfyoudonothavePlaydoorclay,thenmakeavolcanooutofbreaddough.
Justmix6cupsofflour,2cupsofsalt,4tablespoonsofcookingoiland2cupsofwarmwatertogetherinabigbowl.Themixtureshouldbekneadedtocreateadoughthatissmoothandfirm.Addalittlemorewarmwaterifneeded.Standasmallsodabottleinabakingpanorbakingtrayorpietinandmoldthedougharounditintoavolcanoshapelikethephotobelow.
Step4: Waitforthedoughtoharden.Step5: Pour1/2cupofhydrogenperoxideintothesmall,emptysodabottleinsidethe
homemadevolcano.Step6: Addseveraldropsoffoodcoloring.Step7: Pour1/2tablespoonofquick-risingyeastintothebottleandstirquicklywithalong
pencilortwig.Step8: Watchtheeruption.Step9: Takeaphotoofyoureruptingvolcanoandbringittoschoolwithawrittenortyped
labreportthatanswersthe5questionsbelow. NEXTPAGE
o Whichsafetyprecautionsmustbeobservedduringthislabactivity?o Whichgasisproducedinthereactionbetweentheyeastandperoxide?o Whichofthefourtypesofvolcanoesdoesyourhomemadevolcanomostresemble?
(Useinformationfromthestudysheetonvolcanoestohelpyouexplain).o Howlongdidtheeruptionlast?o Repeattheexperiment,butthistime…
Addtwotablespoonsofbakingsoda,severaldropsoffoodcoloring,andaquartercupofvinegartotheopeningofyourvolcano***OR***Addaquartercupofsoda(Sprite,Coke,Pepsi,etc.)andpiecesofMentoscandy.Howwastheeruptiondifferentusingthenewingredients?
RUBRIC
LEVEL4(100%) LEVEL3(80%) LEVEL2(60%) LEVEL1(40%)Studenthasphotoofhisorherhomemadevolcanoasiterupts…ANDStudenthaswrittenortypedlabreportthatcompletelyanswersall5questions…ANDStudent’sphotoandworkhavebeenhandedinbeforeorontheduedateornomorethantwodaysaftertheduedate.
Studentismissingaphotoofhisorherhomemadevolcanoasiterupts…ORStudenthaswrittenortypedlabreportthatcompletelyanswers3-4questions…ORStudent’sphotoand/orworkhavebeenhandedinthreetofourdaysaftertheduedate.
Studentismissingaphotoofhisorherhomemadevolcanoasiterupts…AND/ORStudenthaswrittenortypedlabreportthatcompletelyanswers2questions…AND/ORStudent’sphotoandworkhavebeenhandedinfivetosixdaysaftertheduedate.
Studentismissingaphotoofhisorherhomemadevolcanoasiterupts…AND/ORStudenthaswrittenortypedlabreportthatcompletelyanswers1question…AND/ORStudent’sphotoandworkhavebeenhandedinsevendaysormoreaftertheduedate.
LEVEL0(0%)Ifstudent’sphotoandworkhavebeenhandedinsevendaysormoreaftertheduedate.
