教育专题：2015-2016学年人教版必修三Unit4Astronomythescienceofthestarsperiod1课件（31张）.ppt

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1、ReadingWarming UpWhat subjects do you learn at school?lChineselEnglish lmathematicslphysicslhistorylgeographylphysicslbiologylchemistrybrainstorminggeophysicsbiochemistryastronomy biochemistry geophysics medicine_ the scientific study of treatment of diseases and injures_ the study of the chemistry

2、of living things_ the scientific study of the earths atmosphere,oceans and climate_ the scientific study of objects in space,such as planets,stars,comets and“black holes”astronomymedicinebiochemistrygeophysicsAstronomy is the scientific study of the universe and the heaven bodies(such as the sun,the

3、 moon,and stars),gas,and dust within it.astronomerThe Solar system eight planets many comets other objects A.地球地球 _B.木星木星 _C.火星火星 _D.水星水星 _E.海王星海王星 _F.冥王星冥王星 _G.土星土星 _H.天王星天王星 _I.金星金星 _EarthJupiterMarsMercuryNeptunePlutoSaturnUranusVenusThe earths atmosphereThe earths atmospherenitrogenoxygendioxide

4、carbonsurface vapour The earths atmospherePresentationHOW LIFE BEGAN ON THE EARTH?Pangu separates the sky from the earthNuwa makes human beingsThe Big Bang How many parts can the text be divided into?Two parts:Part 1(para 1)Part 2(para2.3.4)Water made it possible for life begin to develop.The develo

5、pment of living things.Energetic dustA solid ballExplode atmospherewaterWater made it possible _for life to begin to develop.21 small plants in water3 green plants on land456 forests7892 shellfish and all sorts of fish4 insects(on land)5 amphibians(on land and in water)7 reptiles(on land)8 dinosaurs

6、(on land)9 mammals(on land)_made it possible for life to begin to develop.WaterLater _ appeared.land animals insectsamphibiansWhen plants grew into forests,_ appeared for the first time.reptilesSome huge animals,called _,Some huge animals,called _,developed.developed.dinosaursWhen dinosaurs disappea

7、red,_ became more important.mammalsA cloud of dust a solid ball presence of water on the water shellfish&other fish plants begin to grow on dry land insects and amphibians appear retiles appear dinosaurs appear mammals appearThe development of lifesmall plants growon the water appearshellfish&other

8、fishplants begin to grow on drylandinsects and amphibians appearretiles appeardinosaurs appearmammals appearExercisesRead paragraph 2 to 4 carefully and finish the following form.How life began on the earth1.small plants in water2.shellfish and all sorts of fish 3.green plants on land4.insects(on la

9、nd)5.amphibians(on land and in water)6.forests7.reptiles(on land)8.dinosaurs(on land)9.mammals(on land)10.small clever animals with hands and feet 11.human 1.Because the water reminded on the earth.2.Because plants provide oxygen for animals to breathe.3.Because dinosaurs died out long before human

10、beings developed on the earth.4.The name is Pluto.Scientists now think it is too small to be called a planet.5.Human beings caused global warming.Check the answers on P2710 7 3 8 4 9 6 1 5 2 12 112.3.Group work What problems have been caused by humans to the earth?How to protect the earth and make i

11、t a better place to live on?As a student,what little things can we do for the earth?Whether life will continue on the earth depends on human beings.Only if we care will we help,only if we help shall all be saved!Homework1.听写astronomy-dioxide2.书上P28 第题1.solid;violent;astronomy;generally speaking;preventfrom;planet;development;explode;surface,methodConclusion