,高中英语课件,（金戈铁骑 整理制作,）,高中英语课件（金戈铁骑 整理制作）,1,Unit 4 Global Warming,Save the earth!,Period,1,Warming,up and Reading I,Unit 4 Global WarmingSave the,2,energy sources,We depend on energy to do many things in our daily lives.For example,energy lights our cities 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.,z x x k,energy sourcesWe depend on ene,3,stove,light,things that use energy in your home,micro-wave oven,cassette player,heating,television,hairdryer,video player,fridge,computer,washing machine,stove,stove light things that use en,4,Wind energy is used as power to,produce,electricity.,Windmills,Wind energy is used as power t,5,where electricity is produced by burning coals.,The coal power stations,where electricity is produced,6,in which oil is refined and made pure.,The Oil Refineries,in which oil is refined and ma,7,a facility designed to convert nuclear,z x xk,energy,into electricity.,A nuclear power plant,a facility designed to convert,8,on the roof of a house on a bright sunny day are used to collect solar energy,making your house warm or heating your water.,Solar panels,on the roof of a hou,9,are used to keep back water and raise its level for irrigation or for producing electricity,etc.,The Hydro-electric dams,are used to keep back water an,10,An energy source is,“renewable,”,when supplies of it never run out and“,non-renewable”,when one day they will run out.,Which energy sources on your list are renewable and which are non-renewable?,Discuss,An energy source is“renewable,11,Sources of energy,Renewable/non-renewable,coal,oil,natural gas,wind(wind power),sun(solar energy),uranium(nuclear energy),water(hydro-electric power),plant waste(biomass energy),hot spring or geysers(geothermal energy),the sea(tidal energy),non-renewable,non-renewable,non-renewable,renewable,renewable,non-renewable,renewable,renewable,renewable,renewable,Sources of energyRenewable/non,12,What is the greenhouse made and used for?,What is the greenhouse made,13,Z x x k,Z x x k,14,人教版高中英语选修六Unit4warmingupandreading课件,15,A,greenhouse,is made of glass and is used for growing plants,especially during cold weather.,A greenhouse is made of,16,How does it work?,The air inside is warm because the glass traps the heat from the sun and keeps it from escaping.This makes the greenhouse heat up and so the,plants can grow,throughout the,cold period.,How does it work?,17,What are the“greenhouse gases”?,In the atmosphere surrounding the earth there are gases,which are called“greenhouse gases”,including carbon dioxide,methane(,甲烷,沼气,)and water vapor.,What are the“greenhouse gases,18,What do you think greenhouse,gases do?,They trap heat from the sun and therefore warm the earth.,What do you think greenhouse,19,Main ideas of each part,Writing techniques,(Paragraph 1),Introduce a debate over the issue of global warming.,Raising a question,Reading,Main ideas of each partWriting,20,Main ideas of each part,Writing techniques,(Paragraphs 2-3),Illustrate how global warming comes about.,Giving examples,using graphs,explanation.,Main ideas of each partWriting,21,(Paragraphs 4-,-6,),List two different attitudes among scientists towards global warming.,Giving examples,making contrast.,(Paragraphs 4-6)List two d,22,(Paragraph,7,),Its up to readers to think and decide whether people should do something about global warming or not.,Using a question,leaving readers to think over the issue.,(Paragraph 7)Its up to read,23,Read the text carefully and fill in the blanks.,Scientists,Opinion,Janice Foster,We need 1_ like carbon dioxide,methane and water vapour,but if we add huge 2_ extra carbon dioxide to the atmosphere by burning fossil fuels,it will cause the 3_ to go up.,gases,quantities of,global temperature,Read the text carefully and fi,24,Scientists,Opinion,Janice Foster,Over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius,but it could be as high as 5 degrees Celsius.,An increase of five degrees would be a 4_ .,catastrophe,ScientistsOpinionJanice Foster,25,Scientists,Opinions,George Hambley,Believes that we shouldnt worry about 5_ of carbon dioxide in the air.,Predicts that any warming will be mild with few bad environmental 6_ .,7_that more carbon dioxide is actually a 8_ thing,which will make life for human beings better.,high levels,consequences,States,positive,ScientistsOpinionsGeorge Hambl,26,Comprehending,Comprehending,27,浓度单位,浓度单位,28,Glance quickly at the magazine article and answer the questions.,Who wrote the magazine article?What is the name of the magazine?,Sophie Armstrong wrote the magazine article.The name of the magazine is Earth Care.,Glance quickly at the magazine,29,What are the names of the three scientists mentioned in the article?,They are Dr.Janice Foster,Charles Keeling and George,Hambley.,What are the names of the thre,30,3.What do they think about global,warming?,Do they agree with one another?,They dont agree with each other