unit4 global warming[下学期]
文档属性
| 名称 | unit4 global warming[下学期] |
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| 格式 | rar | ||
| 文件大小 | 1.4MB | ||
| 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 | 2006-11-23 00:00:00 | ||
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文档简介
课件31张PPT。Unit 4 Global warming ---The earth is becoming warmer-But dose it matterEnergy resourcesWindmills, renewable.What? Renewable?What? Renewable?A coal power station , non-renewable.What? Renewable?An oil refinery(精炼厂), non-renewable.What? Renewable?A nuclear power plant, non-renewable.What? Renewable? Solar panels, renewable.What? Renewable?A hydro-electric dam, renewable.What source of energy?Geysers(间歇泉)Geothermal (地热的) Energy PlantThermal(温泉的) Region, IcelandNon-renewable RenewableCoal
Oil
Natural gas
Wind (wind power)
Sun (solar energy)
Water (hydro-electric power)
Plant waste (biomass energy)
Hot springs or geysers (geothermal energy)
The sea (tidal energy)Fossil fuelsWhat are fossil fuels?Ancient animal and plant material below the surface of the earth with a high carbon content, such as coal, oil and natural gas, which can be burnt to produce energy. Also known as non-renewable energy because once they are used they have gone forever; they cannot be renewed. plants outsideIf lack of solar energy, the plants…GreenhousegreenhouseSkimming and scanningWhat are greenhouse gases?
What’s greenhouse effect?What are greenhouse gases?
What’s greenhouse effect?
Some byproducts of the process of burning fossil fuels, the most important one being carbon dioxide.This is when small amounts of gases in the atmosphere ,like carbon dioxide,methane and water vapor trap heat from the sun and therefore warm the earth.
Fast readingWhat are the names of the three scientists mentioned?
Is the global warming terrible?
What’s the main topic of the article?(within 5 words)
When dose the problem of the increase of the global temperature begin?What are the names of the three scientists mentioned?Is the global warming terrible?
What’s the main topic of the article?Dr Janice Foster, Charles Keeling, George Hambley.DifferentGlobal warming/ the warming of the earth.When dose the problem of the increase of the global temperature begin? When we add huge quantities of extra carbon dioxide to the atmosphere by burning fossil fuels.Read for the details True or false!The temperature last century didn't increase much.
Everyone believes that global warming is caused by the activities of humans.
Janice Foster believes that global warming is caused by burning fossil fuels.
Natural gas is a greenhouse gas.
Carbon dioxide is a byproduct of burning fossil fuels.People accept Charles Keeling's data because he took accurate measurements.
Flooding could be one of the effects of future global warming.
George Hambley believes scientists are just guessing about the effects of global warming.
George Hambley is worried about the effects of carbon dioxide on plant growth.
It is clear what the effects of global warming will be.Read for the details.What’s the main idea of the passage? The __________ have different ideas on whether it __________ when the earth is becoming __________.scientists
matters
warmer
Read for the details.Find a sentence in the passage that has the same meaning with the following one.
When more energy is trapped in the atmosphere because of the increase of amount of carbon dioxide , the global temperature will rise.
The increased amount of carbon dioxide means that more heat energy is trapped in the atmosphere causing the global temperature to go up.Look at the two graphs on page 26.Complete the paragraphs about them with appropriate words. The first graph shows the global ____between____and___. The temperature________ and decreased during this period but on the whole it________ by around one degree Fahrenheit. During this time, the earth reached its______ temperature in about____ and its highest in 2000. There was a steady____ in the temperature during the twenty years after1980. We can see from the graph that the earth has become_____ since early last century.
The second graph shows the amount of _______ in the atmosphere from___to ____. The carbon dioxide content ______ steadily over the forty-year period. It went up from 315to 370 parts_____ million.
Look at the two graphs on page 26.Complete the paragraphs about them with appropriate words. The first graph shows the global temperature between1860 and 2000. The temperature increased and decreased during this period but on the whole it rose/increased by around one degree Fahrenheit. During this time, the earth reached its lowest temperature in about 1910 and its highest in 2000. There was a steady increase in the temperature during the twenty years after1980. We can see from the graph that the earth has become warmer since early last century.
The second graph shows the amount of carbon dioxide in the atmosphere from1957 to 1997. The carbon dioxide content went up/rose/increased steadily over the forty-year period. It went up from 315to 370 parts per million.
The different ideas between Dr. Janice Foster & George Hambleyincreasecatastrophevery seriouspositiveproduce morea greater range of animals1. "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 expected to issue a statement about the election. D. The magazine has 12 issues each year.B2. 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 be found out about the effects of global warming.
DFurther thinkingWhat do you think after learning this passage?Think about what we can do to save some energy and to prevent the process of global warming.
Write down your opinions.
Oil
Natural gas
Wind (wind power)
Sun (solar energy)
Water (hydro-electric power)
Plant waste (biomass energy)
Hot springs or geysers (geothermal energy)
The sea (tidal energy)Fossil fuelsWhat are fossil fuels?Ancient animal and plant material below the surface of the earth with a high carbon content, such as coal, oil and natural gas, which can be burnt to produce energy. Also known as non-renewable energy because once they are used they have gone forever; they cannot be renewed. plants outsideIf lack of solar energy, the plants…GreenhousegreenhouseSkimming and scanningWhat are greenhouse gases?
What’s greenhouse effect?What are greenhouse gases?
What’s greenhouse effect?
Some byproducts of the process of burning fossil fuels, the most important one being carbon dioxide.This is when small amounts of gases in the atmosphere ,like carbon dioxide,methane and water vapor trap heat from the sun and therefore warm the earth.
Fast readingWhat are the names of the three scientists mentioned?
Is the global warming terrible?
What’s the main topic of the article?(within 5 words)
When dose the problem of the increase of the global temperature begin?What are the names of the three scientists mentioned?Is the global warming terrible?
What’s the main topic of the article?Dr Janice Foster, Charles Keeling, George Hambley.DifferentGlobal warming/ the warming of the earth.When dose the problem of the increase of the global temperature begin? When we add huge quantities of extra carbon dioxide to the atmosphere by burning fossil fuels.Read for the details True or false!The temperature last century didn't increase much.
Everyone believes that global warming is caused by the activities of humans.
Janice Foster believes that global warming is caused by burning fossil fuels.
Natural gas is a greenhouse gas.
Carbon dioxide is a byproduct of burning fossil fuels.People accept Charles Keeling's data because he took accurate measurements.
Flooding could be one of the effects of future global warming.
George Hambley believes scientists are just guessing about the effects of global warming.
George Hambley is worried about the effects of carbon dioxide on plant growth.
It is clear what the effects of global warming will be.Read for the details.What’s the main idea of the passage? The __________ have different ideas on whether it __________ when the earth is becoming __________.scientists
matters
warmer
Read for the details.Find a sentence in the passage that has the same meaning with the following one.
When more energy is trapped in the atmosphere because of the increase of amount of carbon dioxide , the global temperature will rise.
The increased amount of carbon dioxide means that more heat energy is trapped in the atmosphere causing the global temperature to go up.Look at the two graphs on page 26.Complete the paragraphs about them with appropriate words. The first graph shows the global ____between____and___. The temperature________ and decreased during this period but on the whole it________ by around one degree Fahrenheit. During this time, the earth reached its______ temperature in about____ and its highest in 2000. There was a steady____ in the temperature during the twenty years after1980. We can see from the graph that the earth has become_____ since early last century.
The second graph shows the amount of _______ in the atmosphere from___to ____. The carbon dioxide content ______ steadily over the forty-year period. It went up from 315to 370 parts_____ million.
Look at the two graphs on page 26.Complete the paragraphs about them with appropriate words. The first graph shows the global temperature between1860 and 2000. The temperature increased and decreased during this period but on the whole it rose/increased by around one degree Fahrenheit. During this time, the earth reached its lowest temperature in about 1910 and its highest in 2000. There was a steady increase in the temperature during the twenty years after1980. We can see from the graph that the earth has become warmer since early last century.
The second graph shows the amount of carbon dioxide in the atmosphere from1957 to 1997. The carbon dioxide content went up/rose/increased steadily over the forty-year period. It went up from 315to 370 parts per million.
The different ideas between Dr. Janice Foster & George Hambleyincreasecatastrophevery seriouspositiveproduce morea greater range of animals1. "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 expected to issue a statement about the election. D. The magazine has 12 issues each year.B2. 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 be found out about the effects of global warming.
DFurther thinkingWhat do you think after learning this passage?Think about what we can do to save some energy and to prevent the process of global warming.
Write down your opinions.