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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Astronomy:the science of the stars,Unit 4,What subjects do you learn at school?,Chinese,mathematics,English,physics,chemistry,biology,politics,history,geography,physics,mathematics,chemistry,biology,geography,Science subjects,astronomy,Astronomy,is the scientific study of the universe and the heaven bodies(such as the sun,the moon,and stars),gas,and dust within it.,What is Astronomy?,A Quiz,Game,How old is the earth?,A.About 3.5 billion years,B.About 4.5 billion years,C,.About 5.5 billion years,D,.About 6.5 billion years,2.,_of the earth surface is covered by water.,A.20%B.30%C.50%,D.70%,3,.Who wrote“The Origin of Species”(,物种起源,)?,Newton,Einstein,Charles Darwin,4,.On what day is the Earth day celebrated?,A.April 22 B.May 4,C.August 21 D.November 11,5,.How many,planets,are there in the Solar System?,A 7 B 8 C 9,THE SOLAR SYSTEM,Do you know what these,planets,are,in,the Solar System?,地球,_,木星,_,火星,_,水星,_,海王星,_,土星,_,天王星,_,金星,_,Earth,Jupiter,Mars,Mercury,Neptune,Saturn,Uranus,Venus,Mercury,水星,Venus,金星,Earth,Mars,火星,Jupiter,木星,Saturn,土星,Uranus,天王星,Neptune,海王星,Mercury,Venus,Earth,Mars,Jupiter,Uranus,Saturn,Neptune,Pluto,Scientists now think Pluto is,too small to be called a planet.,How did life begin on Earth?,How was the universe formed?,Pre-reading,Each religion and culture has its own ideas about how life began on earth.What do you,know about the legends?,God created the world.,Pangu,separated the,sky from the earth.,Nvwa,made humans.,女,娲,补,Word Study,1.insects 2.plants,3.reptiles 4.shellfish,5.amphibians 6.fish,7.mammals,Study of the groups of life(,种类,/,物种,),Look at the pictures and tell the groups.,plants,reptiles(,爬行类,),shellfish(,贝类,),fish,insects,mammals,amphibians(,两栖类,),How Life Began on The Earth,Reading,Read the passage quickly to find the main idea of each paragraph.,Paragraph 1:,A widely accepted theory,about the formation of the,universe,Paragraph 2:,The formation of the earth,Paragraph 3:,The importance of water,for life,Paragraph 4:,The development of plants,and animals on the earth,Paragraph 5:,The arrival of humans and,their impact on the earth,Detailed Reading,The development of the earth,Read the,first 3,paragraphs quickly and find out what it is mainly about.,This text can mainly divided into two parts.,(1)What happened in the beginning?,The Big Bang,(2)What happened several billion years,after the Big Bang?,a cloud of dust,a solid ball,exploded with fire and rock,produced water,vapour and gases,(3)What happened next?,(4)What did the water vapour and gases,form?,The earths atmosphere,Water appeared.,(5)What appeared on the earth after,it cooled down?,(,6,)What did the water form?,oceans and seas,The development of life,Read the last 2 paragraphs quickly and find out what it is mainly about.,appearance of small plants in water,What life developed after water,appeared?,early shellfish,Stage,1.,The,development of life in water,all sorts of fish,(2)What life developed in water next?,green plants on land,insects on land,(3)What life developed after the life in,water?,amphibians on land and in the water,forests,Stage,2,:,The development of life on land,(1)What life developed next on land?,reptiles on land,dinosaurs on land,(2)What life developed after forests,appeared?,mammals on land,(3)What life developed after dinosaurs?,small clever animals,(4)What life developed after mammals?,Summary,The universe began with a“,B,_”.,The earth was a cloud of dust.,The earth became a solid ball then it,e,_ with fire and rock.,They produced carbon and other gases,which made the earths,a,_.,When it cooled down,water appeared on,the,s,_.,Then small green,p,_grew on the water,and later shellfish and other fish appeared.,ig Bang,xploded,tmosphere,urface,lants,Summary,When plants began to grow on dry land,insects and,a,_ appeared.,Forests appeared before,r,_appeared.,They produced young by,l,_eggs.,Then,d,_ appeared in forests.,The disappearance of dinosaurs made the rise of the animals called“,m,_”.,At last small clever animals appeared,and later they grew into,h,_beings.,inosaurs,aying,mphibians,eptiles,ammals,uman,We have only one earth!,Thank you!,Good-bye!,
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