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1、Unit4Astronomy:thescienceofthestarsPeriod1-2Warmingup&ReadingStep1Warmingup&leadin1.TalkaboutsciencesubjectsT:Goodmorning/afternoon,everyone.Whatclassdoyouhavetoday?S1:Math,English,Chinese,physics,history,andgeology.T:Whatothersubjectsdoyouhaveinschool?S2:Comput
2、er,chemistry,biology,music,PE,andpolitics.T:Whichisyourfavorite?Why?S3:Myfavoriteoneis…becauseit’sveryinteresting/exciting/instructive/…S4:Ilike…bestbecause…T:Whichonesaresciencesubjects?S5:Physics,chemistry,biology,geologyandmathematics.T:Allthesesubjectsplayan
3、importantroleinthestudyofscience.Whatsubjectsareusedtostudymedicine?Howaboutbiochemistry?Whataboutgeophysics?Whatsubjectsarepartofastronomy?T:Whatdoesastronomydealwith?S10:Astronomyisthescientificstudyoftheuniverseandtheheavenbodies(suchasthesun,moon,andstars),g
4、as,anddustwithinit.T:Whatdowecallpeoplewhostudyastronomy?S11:Astronomer.2.TalkaboutuniverseandsolarsystemT:Let’sfollowthisastronomertolearnaboutuniverse.Howdidtheuniversecomeintobeing?S12:Afterthe“BigBang”,theuniversecameintobeing.T:Doyouknowthesolarsystemintheu
5、niverse?Whatisitmadeupof?S13:Thesolarsystemcontainseightplanetsandmanycometsandotherobjects.(Note：Accordingtothepresentdayscientificstudy,thereareonlyeightplanets,withthePlutoexcluded.)T:Canyounametheeightplanets?S14:TheSun,Mercury,Venus,Earth,Mars,Jupiter,Satur
6、n,Uranus,andNeptune.T:Whichplanetdoweliveon?Canyoudescribewhatitlookslike?S15:Earth.Itsupportsavarietyoflifeand70%oftheearthiscoveredwithseasoroceans.T:Istherelifeonotherplanets?S16:Notyet.T:Right,thereisafamoussaying“Wateristheheadspringoflife”.Buthowdidthewate
7、rappearontheearth?Ifyouwanttogetthecorrectanswer,pleasereadthepassageonP25.Itwilltellyou.15Step2Reading1.GettheSstogothroughParagraph1onP25andfindtheanswerstothefollowingquestionsQs:①Whatdidtheearthlooklikeafterthe“BigBang”?(acloudofenergeticdust)②Howdidtheearth
8、changeafterwards?(…combineintoasolidball)③Whathappenedtotheball?(explode…maketheearth’satmosphere)④Howdidthewaterbegintoappear?（cooldown）⑤Didwaterstayontheotherplanet
