新课标高中英语必修4第四单元astronomy reading2PPT课件.ppt

Unit4astronomyreading(2),江西省上高中学付龙伟,Doyouknoweachreligionorculturehasitsownideasaboutthebeginningoftheuniverse?,1.Panguseparatestheskyfromtheearth,2.Nuwamakeshumanbeings,3.Godcreatedman.,ThebigBangisusedtodescribeahugeexplosionthatscientistsbelievehappenedaround15billionyearsago,createdouruniverse.,Whatsthesientificidea?,Unit4:Astronomy:thescienceofthestars,Solarsystem:ismadeupofthesunandtheobjectsthatorbit(盘绕)it.Theseincludethenineplanetsandtheirmoons（卫星）,aswellascomets（彗星）,andmeteors（流星）.,Blackhole:mayeateverythingthatcomesclosetothem.Sometimestheythrowoutmaterial.Thatishownewstarsandplanetsdevelop.,FastReading(Readthefirstparagraph),Howdidwatercomeintobeingontheearth?,Whyisimportanttohavewaterontheearth?,Theexplosionoftheearthproducedwatervapor,whichturnedintowaterwhentheearthcooleddown.,Itallowedtheearthtodissolveharmfulgasesintooceansandseas.,Readthesecondandthirdparagraph,andfinishthechart:,Smallplantsinwater,_andallsortsoffish,greenplantson_-,_dinosaurs_,_,Insects(onland),_(onland/inwater),develop,appear,appear,Shellfish,amphibian,reptiles,mammals,land,forest,Canyouputtheorderofdevelopmentoflifeintoatimeline?,(A)insectsandamphibiansappear(B)asolidball(C)reptilesappear(D)acloudofdust(E)shellfishandotherfishappear(F)dinosaursappear(G)smallplantsgrowonthewater(H)plantsbegintogrowondryland(I)presenceofwater(J)mammals(includinghumans)appear,1,2,3,4,5,6,7,8,9,10,Thinkaboutwhatyouhavereadandmakechoices.,Whywastheearthdifferentfromotherplanets?Aitproducedalotofheat.B.Thewaterremained.CWaterdisappeared.D.Itwastheoldestplanet.,Whywaslifeabletodevelopontheearthbutnotonotherplanets?ATheearthhadasolidshape.B.Theearthdidnothaveharmfulgasesinitsatmosphere.CThewaterstayedontheearthbutnotonotherplanets.D.Theearthwasnottoohotandnottoocold.,Whywasitnecessaryforplantstogrowbeforeanimals?,AAnimalsneededplantstoprotectthemfromthesun.BPlantsprovidedoxygenforanimalstobreathe.CAnimalscouldhidefromhuntersinforest.DItwaseasierforplantstogrow.,Whatproblemiscausedbyhumanbeing?,ATheyexisteverywhereontheearth.BTheycauseglobalwarming.CTheyfindnewmethodsofgrowingcrops.DTheyenjoyhuntingandfishing.,Discuss:,Istheearthgettingwarmereachyear?Ifso,whatef