高中英语 unit 4 warming up and reading课件 新人教选修6.ppt

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1、Unit 4 Global warming2021/8/11 星期三1energy sourcesWe 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.2021/8/11 星期三2stove light thin

2、gs that use energy in your home micro-wave oven cassette player heating television hairdryer video player fridge computer washing machine stove2021/8/11 星期三3Wind energy is used as power to produce electricity.Windmills2021/8/11 星期三4where electricity is produced by burning coals.The coal power statio

3、ns2021/8/11 星期三5in which oil is refined and made pure.The Oil Refineries2021/8/11 星期三6a facility designed to convert nuclear energy into electricity.A nuclear power plant2021/8/11 星期三7 on the roof of a house on a bright sunny day are used to collect solar energy,making your house warm or heating you

4、r water.Solar panels2021/8/11 星期三8are used to keep back water and raise its level for irrigation or for producing electricity,etc.The Hydro-electric dams2021/8/11 星期三9Guess it!Uranium Ore(铀矿石铀矿石)The element uranium does not occur in pure form in nature but is found in minerals such as carnotite（钒钾铀矿

5、钒钾铀矿）,pictured here.2021/8/11 星期三10What source of energy?Geysers(间歇泉间歇泉)2021/8/11 星期三11Geothermal(地热的地热的)Energy Plant2021/8/11 星期三12 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 wh

6、ich are non-renewable?Discuss2021/8/11 星期三13Things that use energy in your homeSources of energyRenewable/non-renewablelightheatingtelevisioncassette playervideo playercomputerfridgestovewashing machinehairdryercoaloilnatural gaswind(wind power)sun(solar energy)uranium(nuclear energy)water(hydro-ele

7、ctric power)plant waste(biomass energy)hot spring or geysers(geothermal energy)the sea(tidal energy)non-renewablenon-renewablenon-renewablerenewablerenewablenon-renewablerenewablerenewablerenewablerenewable2021/8/11 星期三14What are these buildings made of and what is their purpose?They are made of gla

8、ss and plants can grow in it when it is cold outside.2021/8/11 星期三15How does it work?The glass traps the heat from the sun,making the air warm so that plants can grow better.2021/8/11 星期三16Greenhouse gases!Whats greenhouse gases effect?Greenhouse gases perform the same function as the glass in a gre

9、enhouse -They trap the heat of the sun and keep the air surrounding the earth warm.It is called the greenhouse effect.2021/8/11 星期三17The Earth Is The Earth Is Becoming Warmer Becoming Warmer But Does It But Does It Matter?Matter?2021/8/11 星期三18Fast ReadingGlance at the article and Glance at the arti

10、cle and answer the question.answer the question.2021/8/11 星期三19It has a title,a first paragraph that runs across the page and is in bold,the main text in two columns,graphs/diagrams,two quotes.What is the structure of a magazine like this and how is the text organized?2021/8/11 星期三20Reading comprehe

11、nsionRead the article again and Read the article again and finish comprehending finish comprehending on page 27on page 272021/8/11 星期三21Sophie Armstrong wrote the magazine article.The name of the magazine is“Earth care”.2.What are the names of the three scientists mentioned in the article?They are D

12、r.Janice Foster,Charles Keeling and George Hambley.1.Who wrote the magazine article?What is the name of the magazine?2021/8/11 星期三223.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 effe

13、cts will be terrible,while some others believe that we should not worry about it.2021/8/11 星期三234.What are the two graphs about?Graph 1 shows the temperature increase of one degree Fahrenheit between 1860 to 2000.Graph 2 shows the carbon dioxide content in the atmosphere from 1957 to 1997.Graph 1:Gr

14、aph 2:2021/8/11 星期三245.What is the main topic of the article?Global warming/The warming of the earth.2021/8/11 星期三251.The temperature last century didnt increase much.2.Everyone believes that global warming is caused by the activities of humans.3.Janice Foster believes that global warming is caused

15、by burning fossil fuels.4.Natural gas is a greenhouse gas.5.Carbon dioxide is a byproduct of burning fossil fuels.6.People accept Charles Keelings data because he took accurate measurements.Read the article carefully.Tell true or false.TTFTTF2021/8/11 星期三26Detailed-Reading Read the article in detail

16、s Read the article in details and finish the following and finish the following task.task.2021/8/11 星期三27listening1.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.Listen to the reading passage an

17、d do some choices.2021/8/11 星期三282.But there are some very different attitudes among scientists towards this issue.”“issue here means the same as the one in_.A.I bought the new stamp the day of its issue.B.They are talking about one of the key issues in the election campaign.C.The government is expe

18、cted to issue a statement about the election.D.The magazine has 12 issues each year.2021/8/11 星期三293.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

19、be found out about the effects of global warming.2021/8/11 星期三30Questionnaires-I1.Does Sophie Armstrong support a clear opinion?2.Does George Hambley believe that we should worry much about the global warming?No.he doesnt state it clearly.No,he doesnt.2021/8/11 星期三313.How has the global warming come

20、 about?Human activity-burning of fossil fuels.Greenhouse effect-greenhouse gases-we need those gases.Huge quantities of extra carbon dioxide-from 1957 to 1997-from around 315 parts per million to around 370 parts per million.2021/8/11 星期三324.What are the effects of global warming?Encourage a greater

21、 range of animals.The sea level to rise.Severe storms,droughts,famines,the spread of diseases,and destruction of species.Make plants grow faster.Crops will produce more.2021/8/11 星期三33 main ideaPart1(para1)Introduce a debate over the issue of global warmingPart 2(para2)Part 3(para3-8)Part 4(para9)Il

22、lustrate how global warming comes aboutList two different attitudes among scientists towards global warmingIts up to readers to think and decide whether people should do sth about global warming or not 4 parts2021/8/11 星期三341.What is the purpose of the paragraph that is in bold?To introduce the topi

23、c.To illustrate(阐述阐述)points by providing evidence.2.What are the diagrams for?Questionnaires-II2021/8/11 星期三353.Why are there two quotes?Because they are important or interesting points.Their aim is to attract your attention and to make you read them,and therefore to make you interested enough to re

24、ad the whole article.2021/8/11 星期三36It functions as a conclusion by asking the reader to reflect on the major theme of the text and to predict what might happen in the future.4.What is the purpose of the last paragraph of the article?2021/8/11 星期三37The different ideas between Dr.Janice Foster&George

25、 Hambley Dr.Janice FosterGeorge HambleyCarbon dioxide has caused the global temperature to _.An increase of five degrees would be a _ and could be _.More carbon dioxide is a _ thing,which makes crops _ and will encourage _.go upcatastrophe very seriouspositiveproducea greater range of animals2021/8/11 星期三382021/8/11 星期三39