Unit 4 Global warming reading
文档属性
| 名称 | Unit 4 Global warming reading |
|
|
| 格式 | rar | ||
| 文件大小 | 3.7MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2010-03-29 00:00:00 | ||
图片预览
文档简介
课件28张PPT。Words studyGlobal warmingUnit 4 1. What is a greenhouse made of and used for?
2. How does it
work?
A greenhouse is made of glass and is used for growing plants, especially during cold weather.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.What are greenhouse gases? (list three kinds of them)
What do you think greenhouse
gases do?
methaneCarbon dioxideWater vapour甲烷水蒸气二氧化碳 Greenhouse gases perform the same fun_ction as the glass in a glasshouse . They trap heat from the sun and therefore warm the earth. What do you think greenhouse gases do?
This is called the greenhouse effect.
Greenhouse effectReadingThe Earth is Becoming Warmer ---But Does it Matter?1.Who wrote the magazine article? What is the name of the magazine?
2.What are the names of the three scientists mentioned in the article?
→ Sophie Armstrong, Earth Care.→ Dr Janice Foster, Charles Keeling, George Hambley.
→ 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 global warming? Do they agree with one another?→ The first graph shows the temperature rose about one degree Fahrenheit between 1860 to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1997.
→ Global warming / the warming of the earth4. What are the two graphs about?5. What is the main topic of the article?
Tips:
We can divide the text into Four parts
Part 1 (para __)
Part 2 (para ___ to ___)
Part 3 (para ___ )
Part 4 (para ___ )
12567Reading II-detailed reading Careful Reading
Part 1(para1)Part 2(para 2—5)Part 3（Para 6)
Part4(para 7)It is up to readers to decide whether they should stop global warming or notdescribes how global warming comes about introduces the issue of global warminglists two different attitudes towards global warmingTrue or false?( P27 )Reading Comprehension21.The temperature in the last century didn’t seem to increase much.
2.Every scientist believes that global warming is caused by the activities of humans.
3.Janice Foster believes she can measure the future global rise in temperature.
4.The rise in carbon dioxide is causing a steady increase in global warming.
5.George Hambley believes that global warming will do good rather than harm to the earth.
6.It is clear what the effects of global warming will be.2.What are the effects of global warming?1. How has the global warming come about?1. How has the global warming come about?① Human activity--- burning of fossil fuels.② Greenhouse gases--- greenhouse effect③ Huge quantities of extra carbon dioxide---from 1957 to 1997 it went up from around 315 parts per million to around 370 parts per million.2.What are the effects of global warming?cause the sea level to rise
severe storms
droughts
famines
the spread of diseases
disappearance of speciesPositive effects Negative (catastrophic) effects make plants grow quicker
crops will produce more
a greater range of animals
make life betterMaybe… The sea level will riseMaybe…There will be some disasters,
such as…flood!droughtfamine
forest fire!…Since we know what has caused the global warming, so what shall we do to stop climate change? 1. plant more trees, stop destroying the forests (deforestation 毁林), rainforest in particular. Increase the number of trees take in /consume carbon dioxide, less carbon dioxide, More trees, less dioxide; keep the earth slightly cooler.2. burn less fossil fuels, use environmentally-friendly energy such as solar energy. Cut down on energy if possible, for instance, take public transportation instead of private cars…
3. raise people’s awareness(意识) of environmental protection. For example :say no to …
4. the government takes measures
5. countries work together to solve …HomeworkWrite a short passage about how to protect the environment.
2. How does it
work?
A greenhouse is made of glass and is used for growing plants, especially during cold weather.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.What are greenhouse gases? (list three kinds of them)
What do you think greenhouse
gases do?
methaneCarbon dioxideWater vapour甲烷水蒸气二氧化碳 Greenhouse gases perform the same fun_ction as the glass in a glasshouse . They trap heat from the sun and therefore warm the earth. What do you think greenhouse gases do?
This is called the greenhouse effect.
Greenhouse effectReadingThe Earth is Becoming Warmer ---But Does it Matter?1.Who wrote the magazine article? What is the name of the magazine?
2.What are the names of the three scientists mentioned in the article?
→ Sophie Armstrong, Earth Care.→ Dr Janice Foster, Charles Keeling, George Hambley.
→ 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 global warming? Do they agree with one another?→ The first graph shows the temperature rose about one degree Fahrenheit between 1860 to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1997.
→ Global warming / the warming of the earth4. What are the two graphs about?5. What is the main topic of the article?
Tips:
We can divide the text into Four parts
Part 1 (para __)
Part 2 (para ___ to ___)
Part 3 (para ___ )
Part 4 (para ___ )
12567Reading II-detailed reading Careful Reading
Part 1(para1)Part 2(para 2—5)Part 3（Para 6)
Part4(para 7)It is up to readers to decide whether they should stop global warming or notdescribes how global warming comes about introduces the issue of global warminglists two different attitudes towards global warmingTrue or false?( P27 )Reading Comprehension21.The temperature in the last century didn’t seem to increase much.
2.Every scientist believes that global warming is caused by the activities of humans.
3.Janice Foster believes she can measure the future global rise in temperature.
4.The rise in carbon dioxide is causing a steady increase in global warming.
5.George Hambley believes that global warming will do good rather than harm to the earth.
6.It is clear what the effects of global warming will be.2.What are the effects of global warming?1. How has the global warming come about?1. How has the global warming come about?① Human activity--- burning of fossil fuels.② Greenhouse gases--- greenhouse effect③ Huge quantities of extra carbon dioxide---from 1957 to 1997 it went up from around 315 parts per million to around 370 parts per million.2.What are the effects of global warming?cause the sea level to rise
severe storms
droughts
famines
the spread of diseases
disappearance of speciesPositive effects Negative (catastrophic) effects make plants grow quicker
crops will produce more
a greater range of animals
make life betterMaybe… The sea level will riseMaybe…There will be some disasters,
such as…flood!droughtfamine
forest fire!…Since we know what has caused the global warming, so what shall we do to stop climate change? 1. plant more trees, stop destroying the forests (deforestation 毁林), rainforest in particular. Increase the number of trees take in /consume carbon dioxide, less carbon dioxide, More trees, less dioxide; keep the earth slightly cooler.2. burn less fossil fuels, use environmentally-friendly energy such as solar energy. Cut down on energy if possible, for instance, take public transportation instead of private cars…
3. raise people’s awareness(意识) of environmental protection. For example :say no to …
4. the government takes measures
5. countries work together to solve …HomeworkWrite a short passage about how to protect the environment.