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人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection教学演示课件ppt
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这是一份人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection教学演示课件ppt，文件包含ReadingandThinkingpptx、Languagepointspptx、ClimateChangemp4等3份课件配套教学资源，其中PPT共67页， 欢迎下载使用。
T discuss climate changeT learn t identify the style f this text and infer the writer’s purpse T learn t draw a diagramT think abut hw we can d t deal with climate change
Climate change is a heat tpic fr the scientists arund the wrld. They all try t find ut the truth abut these questins:What causes the climate change?What are the slutins t stp climate change?View the vide.
But smene may ask: is climate change really a prblem? Why?It leads t flds/flding.It’s getting ht and htter and s there are mre drughts.The plar ice sheet is melting and the sea levels are rising. Sea-level rise in turn causes damage t castal regins.
Lead t extreme weather which in turn impacts farming and harvestsDisrupt the balance f the ecsystemDestruct wildlife Defrestatin…
What is the graph abut? What infrmatin can yu get frm it?Have yu ever seen the pht befre? What might be the stry behind it?
Discuss climate change
Befre yu read, lk at the graph and the picture n Page 26 and discuss these questins in grups.
1. What type f writing is this passage? Argumentative writing Narrative writingC. Expsitry writingD. Advertising writing
2. In which part f a newspaper r magazine may we find this passage?Entertainment B. EcnmyC. Educatin D. Envirnment
Read the passage quickly, and chse:
Read the text quickly, and figure ut the main idea f each paragraph.
The earth is getting warmer.
A specific example f the results f climate change
A majr reasn f glbal warming is “man-made” greenhuse effect.
The danger f rising temperature
We shuld seize every pprtunity t reduce glbal warming.
Read the text carefully, and answer the questins.
What happened t the plar bear in the pht? Why did the writer write abut it? Pssible answers: The plar bear died f starvatin/hunger. The write used this alarming case as an example t shw us hw the increase in temperature had terrible impact n Earth’s eclgy.
dead plar bear inNrway’s Arctic island f Svalbard
2. Why is the “natural” greenhuse effect imprtant and necessary? One pssible answer: Greenhuse gases can trap sme f the heat, which can keep Earth’s climate warm and habitable. Withut this prcess, Earth culd nt sustain life.
1. What are the “greenhuse gases”? In the atmsphere surrunding the earth there are gases called “greenhuse gases”, including carbn dixide, methane (甲烷, 沼气).
2. Hw d yu understand “greenhuse effects”? They trap the heat frm the sun, which causes the temperature f earth ges up.
Related questins:
3. What are the cnsequences f high greenhuse gas emissins? Pssible answers: Earth’s surface temperature t rise extreme weather natural disasters lw sea-ice levels causing deaths ecnmic lsses
4. Why did the authr mentin the climate scientists’ warning?One pssible answer: The tpic is a scientific ne, s adding the climate scientist’s warning can make the authr’s pinin (r writing) mre persuasive frm the scientific aspect. On the ther hand, we readers may feel mre reliable abut the authr’s attitude if it is based n the research f sme scientists.
5. What is the authr’s purpse f writing this text?One pssible answer: The authr hpes we can pay attentin t the climate change and d smething t stp it. Fr he r she writes “We as individuals can als reduce ur ‘carbn ftprint’” and “It is ur respnsibility t seize every pprtunity t educate everyne abut glbal warming.”
The ________ is getting warmer and warmer. Evidence ne: _________________________________Evidence tw: _________________________________Evidence three: _________________________________
a warming cean and atmsphere
Read paragraph ne, and fill in the blanks.
melting ice
rising sea levels
Nrway’s Arctic island f Svalbard
A plar bear died f starvatin.
Paragraph 2 intrduces an example f the increase in temperature that had an impact n Earth’s eclgy. Read it and fill in the blanks.
The bear cannt hunt fd because f lw sea-ice levels.
Trap heat frm the sun t keep the Earth’s sustainable life.
Read Paragraph 3, and figure ut the reasn why earth’s temperature rising.
Green-huse effect
“Natural” greenhuse effect
“man-made” greenhuse effect
By burning fssil fuels, extra greenhuse gases cause Earth’s temperature t rise.
Read the article again and create a diagram describing hw the greenhuse effect wrks.
Draw a diagramDiagrams are very useful tls that can be used t brainstrm ideas, map ut prcesses, shw cause and effect relatinships, explain a new idea r cncept and s n. When yu read an essay abut scientific issues, yu can try drawing a diagram, which will nt nly allw yu visualise the prblems mre clearly but als can help demnstrate yur creative thinking and prblem-slving.
Summarize the main idea f paragraph 4, accrding t the diagram.
We shuld take apprpriate actins at nce.
In Paragraph 5, the authr hpes everyne can take actins t reduce ur “carbn ftprint”. As individuals, what can we d in ur daily life t help t minimize climate change?
Use renewable energiesSave energyStp using plastic bagsLive a lw-carbn lifeUse the minimum paper, backing paper etc.Take green transprtatinTake a shwer instead f a bathTurn ff the lights, cmputers etc. the mment yu dn’t need them…
Discuss the questins in grups.
What examples f extreme weather and disasters d yu knw? Can yu make a list?D yu think climate change is the result f human activity? Give yur reasns.Wh d yu think shuld take respnsibility fr dealing with climate change? What can we d?
Wrds yu may use:Adjs: inhspitable, sever, mild, ht, trpical, reusable, recycled, ecnmic…Verbs: mitigate/reduce/alleviate/minimise climate change; deal with/ tackle/ slve/stp/ prevent climate change…Nuns: Gas emissins, carbn dixide, CO2, fssil fuels, extreme weather, natural disasters, rainstrms, heatwaves…
adj. 不适宜居住的
Glbal warming1. The planet has warmed anywhere frm 0.5 t 1.0℃ (1 t 2℉) ver the last century. 2. A definitin f glbal warming wuld have t include a measurable, cnsistent temperature rise, like the ne we have seen in recent histry. A questin remains – Is it an unusual change? Much debate abut that ne.
Supplementary materials
3. The earth gets ne kind f energy (visible light) frm the sun and gives ff anther kind (infrared红外线). This kind is what gets trapped by “greenhuse gases” (GHG’s) in the atmsphere.
Greenhuse gases4. A greenhuse keeps warm by physically trapping the air inside and preventing cnvectin (对流). The atmsphere helps keep the planet warm by trapping utging radiatin instead.
5. The leading gasses are Carbn-dixide, Methane, Ozne (臭氧) and Nitrus Oxide (一氧化二氮). Gas analyzers shw the cncentratins f this stuff have increased smewhat since the beginning f the industrial revlutin.
6. The greenhuse effect raises the average temperature f the Earth by mre than 30 degrees, s withut it the Earth wuld be a very cld place!
1. Retell the reading passage in yur wn wrds.2. Preview page 28 and finish the exercises 1 & 2.
T discuss climate changeT learn t identify the style f this text and infer the writer’s purpse T learn t draw a diagramT think abut hw we can d t deal with climate change
Climate change is a heat tpic fr the scientists arund the wrld. They all try t find ut the truth abut these questins:What causes the climate change?What are the slutins t stp climate change?View the vide.
But smene may ask: is climate change really a prblem? Why?It leads t flds/flding.It’s getting ht and htter and s there are mre drughts.The plar ice sheet is melting and the sea levels are rising. Sea-level rise in turn causes damage t castal regins.
Lead t extreme weather which in turn impacts farming and harvestsDisrupt the balance f the ecsystemDestruct wildlife Defrestatin…
What is the graph abut? What infrmatin can yu get frm it?Have yu ever seen the pht befre? What might be the stry behind it?
Discuss climate change
Befre yu read, lk at the graph and the picture n Page 26 and discuss these questins in grups.
1. What type f writing is this passage? Argumentative writing Narrative writingC. Expsitry writingD. Advertising writing
2. In which part f a newspaper r magazine may we find this passage?Entertainment B. EcnmyC. Educatin D. Envirnment
Read the passage quickly, and chse:
Read the text quickly, and figure ut the main idea f each paragraph.
The earth is getting warmer.
A specific example f the results f climate change
A majr reasn f glbal warming is “man-made” greenhuse effect.
The danger f rising temperature
We shuld seize every pprtunity t reduce glbal warming.
Read the text carefully, and answer the questins.
What happened t the plar bear in the pht? Why did the writer write abut it? Pssible answers: The plar bear died f starvatin/hunger. The write used this alarming case as an example t shw us hw the increase in temperature had terrible impact n Earth’s eclgy.
dead plar bear inNrway’s Arctic island f Svalbard
2. Why is the “natural” greenhuse effect imprtant and necessary? One pssible answer: Greenhuse gases can trap sme f the heat, which can keep Earth’s climate warm and habitable. Withut this prcess, Earth culd nt sustain life.
1. What are the “greenhuse gases”? In the atmsphere surrunding the earth there are gases called “greenhuse gases”, including carbn dixide, methane (甲烷, 沼气).
2. Hw d yu understand “greenhuse effects”? They trap the heat frm the sun, which causes the temperature f earth ges up.
Related questins:
3. What are the cnsequences f high greenhuse gas emissins? Pssible answers: Earth’s surface temperature t rise extreme weather natural disasters lw sea-ice levels causing deaths ecnmic lsses
4. Why did the authr mentin the climate scientists’ warning?One pssible answer: The tpic is a scientific ne, s adding the climate scientist’s warning can make the authr’s pinin (r writing) mre persuasive frm the scientific aspect. On the ther hand, we readers may feel mre reliable abut the authr’s attitude if it is based n the research f sme scientists.
5. What is the authr’s purpse f writing this text?One pssible answer: The authr hpes we can pay attentin t the climate change and d smething t stp it. Fr he r she writes “We as individuals can als reduce ur ‘carbn ftprint’” and “It is ur respnsibility t seize every pprtunity t educate everyne abut glbal warming.”
The ________ is getting warmer and warmer. Evidence ne: _________________________________Evidence tw: _________________________________Evidence three: _________________________________
a warming cean and atmsphere
Read paragraph ne, and fill in the blanks.
melting ice
rising sea levels
Nrway’s Arctic island f Svalbard
A plar bear died f starvatin.
Paragraph 2 intrduces an example f the increase in temperature that had an impact n Earth’s eclgy. Read it and fill in the blanks.
The bear cannt hunt fd because f lw sea-ice levels.
Trap heat frm the sun t keep the Earth’s sustainable life.
Read Paragraph 3, and figure ut the reasn why earth’s temperature rising.
Green-huse effect
“Natural” greenhuse effect
“man-made” greenhuse effect
By burning fssil fuels, extra greenhuse gases cause Earth’s temperature t rise.
Read the article again and create a diagram describing hw the greenhuse effect wrks.
Draw a diagramDiagrams are very useful tls that can be used t brainstrm ideas, map ut prcesses, shw cause and effect relatinships, explain a new idea r cncept and s n. When yu read an essay abut scientific issues, yu can try drawing a diagram, which will nt nly allw yu visualise the prblems mre clearly but als can help demnstrate yur creative thinking and prblem-slving.
Summarize the main idea f paragraph 4, accrding t the diagram.
We shuld take apprpriate actins at nce.
In Paragraph 5, the authr hpes everyne can take actins t reduce ur “carbn ftprint”. As individuals, what can we d in ur daily life t help t minimize climate change?
Use renewable energiesSave energyStp using plastic bagsLive a lw-carbn lifeUse the minimum paper, backing paper etc.Take green transprtatinTake a shwer instead f a bathTurn ff the lights, cmputers etc. the mment yu dn’t need them…
Discuss the questins in grups.
What examples f extreme weather and disasters d yu knw? Can yu make a list?D yu think climate change is the result f human activity? Give yur reasns.Wh d yu think shuld take respnsibility fr dealing with climate change? What can we d?
Wrds yu may use:Adjs: inhspitable, sever, mild, ht, trpical, reusable, recycled, ecnmic…Verbs: mitigate/reduce/alleviate/minimise climate change; deal with/ tackle/ slve/stp/ prevent climate change…Nuns: Gas emissins, carbn dixide, CO2, fssil fuels, extreme weather, natural disasters, rainstrms, heatwaves…
adj. 不适宜居住的
Glbal warming1. The planet has warmed anywhere frm 0.5 t 1.0℃ (1 t 2℉) ver the last century. 2. A definitin f glbal warming wuld have t include a measurable, cnsistent temperature rise, like the ne we have seen in recent histry. A questin remains – Is it an unusual change? Much debate abut that ne.
Supplementary materials
3. The earth gets ne kind f energy (visible light) frm the sun and gives ff anther kind (infrared红外线). This kind is what gets trapped by “greenhuse gases” (GHG’s) in the atmsphere.
Greenhuse gases4. A greenhuse keeps warm by physically trapping the air inside and preventing cnvectin (对流). The atmsphere helps keep the planet warm by trapping utging radiatin instead.
5. The leading gasses are Carbn-dixide, Methane, Ozne (臭氧) and Nitrus Oxide (一氧化二氮). Gas analyzers shw the cncentratins f this stuff have increased smewhat since the beginning f the industrial revlutin.
6. The greenhuse effect raises the average temperature f the Earth by mre than 30 degrees, s withut it the Earth wuld be a very cld place!
1. Retell the reading passage in yur wn wrds.2. Preview page 28 and finish the exercises 1 & 2.
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