Unit 4Astronomy：the science of the stars Warming Up& Reading (I) .ppt

Unit 4 Astronomy：the science of the starsWarming Up&Reading(I),地球 _木星 _火星 _水星 _海王星 _,F.冥王星 _G.土星 _H.天王星 _I.金星 _,Earth,Jupiter,Mars,Mercury,Neptune,Pluto,Saturn,Uranus,Venus,Can you name each planet correctly using the letters given in the table below?,astronomy,astronomers,telescope,What subjects do you learn at school?,ChineseEnglish mathematicsphysicschemistry,geographybiologyhistorypolitics,physics,mathematics,chemistry,biology,geography,Science subjects,Warming up,geophysicsgeology physics 地质学 物理学,astronomy physics mathematics,地球物理学,Some science subjects willstudy two or more of thesesubjects.,biology+chemistry=biochemistry()biomedicine()geopolitics（地缘政治学）=_+_bioengineering(_)=_+_,生物化学,医学,geology,politics,生命工程学,biology,engineering,Common sense of science subjectsCan you understand the following combined science subjects?,astronomy biochemistry geophysics medicine,_the scientific study of treatment of diseases and injuries._ the scientific study of the chemistry 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”.,astronomy,biochemistry,geophysics,medicine,Study of the groups of life(生命的种类/物种)Look at the pictures and tell the groups.,1.insects2.plants3.reptiles（爬行类）4.shellfish（贝类）5.fish6.amphibians（两栖类）7.mammals(哺乳类)8.human beings,Study of the groups of life(生命的种类/物种)Look at the pictures and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the pictures and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the picture and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the pictures and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the pictures and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the picture and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the pictures and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the pictures and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the picture and tell the groups.,Study of the groups of life(生命的种类/物种)Look at the picture and tell the groups.,What is the most important condition for life to grow?,The world is like a big family because of different kinds of life living together.But how did life begin on the earth?,The Big Bang,water,small plants,insects and amphibians on land,reptiles on land,mammals,dinosaurs,The Big Bang,advanced mammals,the beginning of the life,Pangu separated Nvwa created God created the sky humans the world 盘古开天 女娲造人 上帝创世论,Do you believe the passage which tells you the truth about the beginning of life?Why?,Reading How Life Began on the Earth,1.Conclude the main idea of each paragraph.A widely _ about the _ of the universe.2)The formation of the _.3)The _ of water for life.4)The development of _ and _ on the earth.5)The arrival of _ and their _ on the earth.2.The main idea of the text.The text mainly tells us the _ of the earth and the _ of life on it.,theory,origin,earth,importance,plants,animals,humans,influence/effect,formation,development,1.What was produced when the earth exploded?2.How did water come into being on the earth?3.Where did life first begin,on the land or in the sea?4.Why were mammals different from other animals?,Scanning,1.What was produced when the earth exploded?Carbon,nitrogen water vapour and other gases.2.How did water come into being on the earth?The explosion of the earth produced water vapour,which turned into water when the earth cooled down.,3.Where did life first begin,on the land or in the sea?In the sea.Because water dissolved harmful gases and made it possible for life to develop.4.Why were mammals different from other animals?Because they gave birth to young baby animals and produced milk to feed them.,Detailed ReadingThis text can be mainly divided into two stages:,Stage 1:The development of the earthStage 2:The development of life,(Para.13),(Para.45),Stage 1:The development of the earth,(1)After the Big Bang,what was the earth like?,a cloud of dust,a solid globe,exploded loudly with fire and rock,produced water vapour and gases,(2)What happened next?,(3)What did the water vapour and gases form?,the earths atmosphere,water appeared,(4)What appeared as the earth cooled down?,Water is important for the beginning of life on the earth.,Stage 2:The development of life,Small plants appeared on the surface of the water.,1.What life developed after water appeared?,Shellfish and all sorts of fish.,2.What life developed in water next?,Green plants began to grow on land.,Insects appeared.,3.What about the life on land?,Amphibians on land as well as in the water.,forests,4.What life developed next on land?,Reptiles appeared.,Dinosaurs developed.,5.What life developed after forests appeared?,Mammals on land.,6.What life developed after dinosaurs?,Small clever animals.,7.What life developed after mammals?,2,3,45,6,78910,1 small plants in water,shellfish and all sorts of fish,insects,reptiles,amphibians,mammals,dinosaurs,humans,plants,animals,green plants on land,forests,Can you fill in the blanks?,8,3,9,12,6,2,Ex.2 on P27,1.Insects and amphibians appeared.3.The earth became a solid ball.5.Reptiles appeared.7.The earth was a cloud of dust.9.Shellfish and other fish appeared.11.Clever animals with hands and feet appeared.,Can you put the order of development of life into a timeline?,10,11,5,1,7,4,Ex.2 on P27,2.Dinosaurs appeared.4.Small plants grew on the water.6.Plants began to grow on dry land.8.Water appeared on the earth.10.The universe began with a“Big Bang”.12.Mammals appeared.,Careful Reading Finish the comprehending on page 27,Choose the best answers.,1.Why was the earth different from the other planets?A.It produced a lot of heat.B.The water remained.C.Water disappeared.D.It was the oldest planet.,2.Why was life able to develop on the earth but not on the other planets?A.The earth had a solid shape.B.The earth did not have harmful gases in its atmosphere.C The water stayed on the earth but not on the other planets.D.The earth was neither too hot nor too cold.,3.Why was it necessary for plants to grow before animals?,A.Animals needed plants to protect themselves from the sun.B.Plants provided oxygen for animals to breathe.C.Animals could hide from hunters in forest.D.It was easier for plants to grow.,4.What problem is caused by human beings?,A.They exist everywhere on the earth.B.They cause global warming.C.They find new methods of growing crops.D.They enjoy hunting and fishing.,How life began on earth is one of the biggest puzzles that scientists found hard to solve.What other puzzles are hidden in the passage?,Ex.5 on P27,How did the universe(earth)form?Why did the earth cool down?Why did water disappear on other planets?How did the dinosaurs disappear?,water,vapour,Retell,The explosion of the earth produced _ _,which turned into water when the earth cooled down.Water allowed the earth to _ harmful gases into the oceans and seas.That made it possible for _ to begin to develop.The arrival of small _ encouraged the development of early _ and all sorts of fish.Many millions of years later the first green plants began to appear on land.,dissolve,life,plants,shellfish,insects,amphibians,reptiles,dinosaurs,mammals,Later land animals appeared.Some were _.Others,called _,were able to live on land as well as in the water.When the plants grew into forests,_ appeared for the first time.Then _ developed,which became the most important animals on the earth for millions of years.After they disappeared,_ became more important.,produced,appeared,spread,They were the last group of animals and they were different because they _ their young from within their bodies.Small clever animals,with hands and feet,_ and _ all over the earth.As time went by,they covered the earth and have become the most important animals on the planet.,Homework1.Finish the exercise 1 and 2 on page 63.2.Read the text again and find out your difficult points.,