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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,2013-12-3,#,Unit 4,Global Warming,Unit 4,1,We depend on,energy,to do many things in our daily lives.For example,energy lights ourcities and heats our buildings.Make a list of things that use energy in your home,in your school,or any other places you can think of.6 students a group.,We depend on energy to do many,2,TV,Fridge,Washing machine,Things depending energy in our everyday life,Air conditioner,Microwave oven,TVFridgeWashing machineThings,3,Where does all this energy come from?,Make another list of as many resources,As you can.,Where does all this energy com,4,Wind energy,Coal energy,Wind energyCoal energy,5,Oil energy,Nuclear energy,Oil energyNuclear energy,6,Solar energy,hydropower,Solar energyhydropower,7,An energy source is“renewable”when supplies,Of it never run out and“non-renewable”when,One day they will run out.Which energy source,on you list are renewable and which are non-,renewable?,Thinking,An energy source is“renewable,8,renewable,renewable,9,Non-renewable,Non-renewable,10,renewable,renewable,11,renewable,renewable,12,renewable,renewable,13,renewable,renewable,14,renewable,renewable,15,Non-renewable,Non-renewable,16,Non-renewable,Non-renewable,17,renewable,renewable,18,greenhouse,Why the greenhouse can make the,plants grow?,greenhouseWhy the greenhouse c,19,DISCUSSION,In the atmosphere surrounding the,earth there are gases called“green-,house gases”.What do you think,greenhouse gases do?,DISCUSSIONIn the atmosphere su,20,Reading,The Earth Is Becoming Warmer,-But does It Matter?,ReadingThe Earth Is Becoming W,21,Reading,1,Read the passage quickly and answer the following,questions.,1.Who wrote the magazine article?What is the,name of the magazine?,2.What are the names of three scientists,mentioned in the article?,3.What do they think about global warming?,Do they agree with one another?,4.What are the two graphs about?,Reading 1Read the passage quic,22,1.Who wrote the magazine article?What is the,name of the magazine?,Sophie Armstrong.Earth Care.,2.What are the names of three scientists,mentioned in the article?,Dr.Janice Foster,Charles Keeling,George,Hambley.,1.Who wrote the magazine artic,23,3.What do they think about global warming?,Do they agree with one another?,There are some very different attitudes,among,scientists towards this issue.,Some think the effects will be terrible,while some others Believe that we should,not worry about it.,3.What do they think about glo,24,4.What are the two graphs about?,The first graph shows the temperature,increase of one degree Fahrenheit,between 1860 to 2000.The second,graph shows the Carbon dioxide content,in the atmosphere from 1957 to 1997.,4.What are the two graphs abou,25,Reading,2,Read the passage carefully and judge whether,the statements are true or false?,1.The temperature in the last century didnt seem to,increase too much.(),2.Everyone believes that global warming is caused by,the activities of humans.(),3.Janice Foster believes that she can measure the future,global rise in temperature.(),4.The rise in carbon dioxide is causing a steady increase in,global warming.(),5.It is clear what the effects of global warming will be.(),T,T,T,F,F,Reading 2Read the passage care,26,Read the passage again and make the best choices.,Who found out the amount of carbon dioxide,in the atmosphere from 1957 to 1977?A.Dr.Janice Foster.B.Charles Keeling.C.George Hambley.D.Sophie Armstrong.,Reading,3,Read the passage again and mak,27,2.The author probably agrees that _A.actually global warming is good for man.B.we should do nothing about the global warming.C.catastrophes will happen if the globe keeps on warming.D.a lot remains to be found out about the effects of global warming.,2.The author probably agrees,28,Discussion,What else should we do to reduce the,amount of carbon dioxide?,DiscussionWhat else should we,29,Homework,:,1.Recite the new words and expressions,of this part.,2.Complete Exercise 1 and 2 on page 31.,Homework:1.Recite the new word,30,Goodbye!,Goodbye!,31,
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