Unit 4 Global warming-Period 1课件
文档属性
| 名称 | Unit 4 Global warming-Period 1课件 |
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| 格式 | rar | ||
| 文件大小 | 2.0MB | ||
| 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 | 2011-04-19 00:00:00 | ||
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文档简介
课件21张PPT。Warming-up and ReadingUnit 4 Global warmingWarming up windmills(风车)a coal power stationan oil refinerya nuclear power plantsolar panelsa hydro-electric damSample listslights
heating
television
video recorder
cars and buses oilcoalnatural gaswind (wind power)sun (solar energy)renewable renewable non-renewablenon-renewablenon-renewablefridgestovewashing machinehair-
dryerwater( hydro-electric)renewableplant waste (biomass energy)renewablehot springs (geothermal energy)renewablethe sea (tidal energy)renewablecomputer uranium (nuclear energy)non-
renewablePre-reading中央气象台:北方大旱与全球变暖有关 来自农业部的消息，这次北方地区的大范围持续气象干旱，已涉及12个省份，河南、安徽、山东、河北、山西、陕西、甘肃等主产区小麦受旱1.45亿亩，初步评估可能会导致夏粮减产2%-2.5%。专家认为，连续干旱事件并不是孤立的，而是全球气候变暖大背景下极端气候事件增多、增强的具体体现。造成这一现象的重要原因是温室气体增加导致的全球变暖。
1.Have you ever seen a greenhouse?2.What is the greenhouse made and used for?A greenhouse is made of glass and is used for growing plants, especially (特别，尤其)during cold weather.
3.How does the greenhouse work?The air inside was warm because the glass traps(挡住，吸收) the heat from the sun and keeps it from escaping（逃跑）. This makes the greenhouse heat up（热量上升） and so the plants can grow throughout(在…期间) the cold period.4.What are the “greenhouse gases”?
5. What do you think greenhouse gases do?greenhouse effectReading:
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.3. What do the three scientists think about global warming? believes it is the burning of more
and more fossil fuels that is resulting in a big increase in carbon dioxide.
Dr. Janice Foster
George Hambley
Charles Keelingthinks the effects of globalm warming
could be very serious（严重的）.thinks global warming will be mild with
few bad environmental consequences.
4. What are the two graphs about?
5. What is the main topic of the article?
The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000.
The second graph shows the carbon dioxide content in the atmosphere from 1957 to 2000.
Global warming/ the warming of the earth.
heating
television
video recorder
cars and buses oilcoalnatural gaswind (wind power)sun (solar energy)renewable renewable non-renewablenon-renewablenon-renewablefridgestovewashing machinehair-
dryerwater( hydro-electric)renewableplant waste (biomass energy)renewablehot springs (geothermal energy)renewablethe sea (tidal energy)renewablecomputer uranium (nuclear energy)non-
renewablePre-reading中央气象台:北方大旱与全球变暖有关 来自农业部的消息，这次北方地区的大范围持续气象干旱，已涉及12个省份，河南、安徽、山东、河北、山西、陕西、甘肃等主产区小麦受旱1.45亿亩，初步评估可能会导致夏粮减产2%-2.5%。专家认为，连续干旱事件并不是孤立的，而是全球气候变暖大背景下极端气候事件增多、增强的具体体现。造成这一现象的重要原因是温室气体增加导致的全球变暖。
1.Have you ever seen a greenhouse?2.What is the greenhouse made and used for?A greenhouse is made of glass and is used for growing plants, especially (特别，尤其)during cold weather.
3.How does the greenhouse work?The air inside was warm because the glass traps(挡住，吸收) the heat from the sun and keeps it from escaping（逃跑）. This makes the greenhouse heat up（热量上升） and so the plants can grow throughout(在…期间) the cold period.4.What are the “greenhouse gases”?
5. What do you think greenhouse gases do?greenhouse effectReading:
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.3. What do the three scientists think about global warming? believes it is the burning of more
and more fossil fuels that is resulting in a big increase in carbon dioxide.
Dr. Janice Foster
George Hambley
Charles Keelingthinks the effects of globalm warming
could be very serious（严重的）.thinks global warming will be mild with
few bad environmental consequences.
4. What are the two graphs about?
5. What is the main topic of the article?
The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000.
The second graph shows the carbon dioxide content in the atmosphere from 1957 to 2000.
Global warming/ the warming of the earth.