1、To discuss climate change To learn to identify the style of this text and infer the writers purpose To learn to draw a diagram To think about how we can do to deal with climate change Climate change is a heat topic for the scientists around the world. They all try to find out the truth about these q
2、uestions: What causes the climate change? What are the solutions to stop climate change? View the video. But someone may ask: is climate change really a problem? Why? It leads to floods/flooding. Its getting hot and hotter and so there are more droughts. The polar ice sheet is melting and the sea le
3、vels are rising. Sea-level rise in turn causes damage to coastal regions. Lead to extreme weather which in turn impacts farming and harvests Disrupt the balance of the ecosystem Destruct wildlife Deforestation What is the graph about? What information can you get from it? Have you ever seen the phot
4、o before? What might be the story behind it? Before you read, look at the graph and the picture on Page 26 and discuss these questions in groups. 1. What type of writing is this passage? A. Argumentative writing B. Narrative writing C. Expository writing D. Advertising writing C 2. In which part of
5、a newspaper or magazine may we find this passage? A. Entertainment B. Economy C. Education D. Environment D Read the passage quickly, and choose: Read the text quickly, and figure out the main idea of each paragraph. Para. 1 The earth is getting warmer. Para. 2 A specific example of the results of c
6、limate change Para. 3 A major reason of global warming is “man-made” greenhouse effect. Para. 4 The danger of rising temperature Para. 5 We should seize every opportunity to reduce global warming. Read the text carefully, and answer the questions. 1.What happened to the polar bear in the photo? Why
7、did the writer write about it? Possible answers: The polar bear died of starvation/hunger. The write used this alarming case as an example to show us how the increase in temperature had terrible impact on Earths ecology. dead polar bear in Norways Arctic island of Svalbard 2. Why is the “natural” gr
8、eenhouse effect important and necessary? One possible answer: Greenhouse gases can trap some of the heat, which can keep Earths climate warm and habitable. Without this process, Earth could not sustain life. 1. What are the “greenhouse gases”? In the atmosphere surrounding the earth there are gases
9、called “greenhouse gases”, including carbon dioxide, methane (甲烷甲烷, 沼沼 气气). 2. How do you understand “greenhouse effects”? They trap the heat from the sun, which causes the temperature of earth goes up. Related questions: 3. What are the consequences of high greenhouse gas emissions? Possible answer
10、s: Earths surface temperature to rise extreme weather natural disasters low sea-ice levels causing deaths economic losses 4. Why did the author mention the climate scientists warning? One possible answer: The topic is a scientific one, so adding the climate scientists warning can make the authors op
11、inion (or writing) more persuasive form the scientific aspect. On the other hand, we readers may feel more reliable about the authors attitude if it is based on the research of some scientists. 5. What is the authors purpose of writing this text? One possible answer: The author hopes we can pay atte
12、ntion to the climate change and do something to stop it. For he or she writes “We as individuals can also reduce our carbon footprint” and “It is our responsibility to seize every opportunity to educate everyone about global warming.” The _ is getting warmer and warmer. Evidence one: _ Evidence two:
13、 _ Evidence three: _ a warming ocean and atmosphere Read paragraph one, and fill in the blanks. Earth melting ice rising sea levels Time Where What happened How did it happen 2013 Norways Arctic island of Svalbard A polar bear died of starvation. Paragraph 2 introduces an example of the increase in
14、temperature that had an impact on Earths ecology. Read it and fill in the blanks. The bear cannot hunt food because of low sea-ice levels. Trap heat from the sun to keep the Earths sustainable life. Read Paragraph 3, and figure out the reason why earths temperature rising. Green- house effect “Natur
15、al” greenhouse effect “man-made” greenhouse effect By burning fossil fuels, extra greenhouse gases cause Earths temperature to rise. Read the article again and create a diagram describing how the greenhouse effect works. 图表；图解图表；图解 Draw a diagram Diagrams are very useful tools that can be used to br
16、ainstorm ideas, map out processes, show cause and effect relationships, explain a new idea or concept and so on. When you read an essay about scientific issues, you can try drawing a diagram, which will not only allow you visualise the problems more clearly but also can help demonstrate your creativ
17、e thinking and problem-solving. Summarize the main idea of paragraph 4, according to the diagram. Temperature rising Extreme weather deal with/ tackle/ solve/stop/ prevent climate change Nouns: Gas emissions, carbon dioxide, CO2, fossil fuels, extreme weather, natural disasters, rainstorms, heatwave
18、s adj. 不适宜居住的不适宜居住的 Global warming 1. The planet has warmed anywhere from 0.5 to 1.0 (1 to 2) over the last century. 2. A definition of global warming would have to include a measurable, consistent temperature rise, like the one we have seen in recent history. A question remains Is it an unusual cha
19、nge? Much debate about that one. 3. The earth gets one kind of energy (visible light) from the sun and gives off another kind (infrared红外线红外线). This kind is what gets trapped by “greenhouse gases” (GHGs) in the atmosphere. Greenhouse gases 4. A greenhouse keeps warm by physically trapping the air in
20、side and preventing convection (对流对流). The atmosphere helps keep the planet warm by trapping outgoing radiation instead. 5. The leading gasses are Carbon-dioxide, Methane, Ozone (臭氧臭氧) and Nitrous Oxide (一氧化二氮一氧化二氮). Gas analyzers show the concentrations of this stuff have increased somewhat since the beginning of the industrial revolution. 6. The greenhouse effect raises the average temperature of the Earth by more than 30 degrees, so without it the Earth would be a very cold place! 1. Retell the reading passage in your own words. 2. Preview page 28 and finish the exercises 1 & 2.
