温室效应_英语演讲_定义_原因_影响_解决方法_新能源.ppt

1、Greenhouse Effect,Definition,The greenhouse effect is a process by which thermal radiation （热辐射）from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions.,Since part of this re-radiation is back towards the surface and the lower atmosphere, it results

2、 in an elevation of the average surface temperature above what it would be in the absence of the gases.,Causes,Large Population,Industry,Automobile Exhaust,Forests Keep Disappearing,With more greenhouse gases released to the atmosphere due to human activity, more infrared radiation will be trapped i

3、n the Earths surface which contributes to the Enhanced Greenhouse Effect,Effects,Temperature,Sincethelate19thcentury,theaverageglobal temperaturehasincreasedbetween 0.3Cand0.6C.Internationally.,Aworldwidegreenhouseeffectmightproduce adangerouslywarmerworld.,Desertification,The effects of global warm

4、ing can have many unforeseen side effects.,Animal Collective death,Rising Sea Levels,Theotherseriousworryisthatrisingsea levelsfromthemeltingofthepolaricecapscouldseverelyfloodmanycountries.Ariseinsealevelsofone meter,whichmany experts are predicting by the year 2100,would flood 15 % of Egypt, and 1

5、2% of Bangladesh（孟加拉）. TheMaldives（马尔代夫）in the Indian Oceanwouldalmostcompletely disappear.,The violence and frequency of hurricanes will increase with global warming,2012.11.13 New York Hurricane Sandy,Since the industrial revolution, human step into the atmosphere of carbon dioxide into such heat-

6、trapping greenhouse gases sex strong increased year by year, atmospheric greenhouse effect also increase consequently, has aroused global warming and so on a series of serious problems, caused the worlds attention.,Solutions,Capture buried technology Improve energy efficiency Clean energy,Influx fro

7、m Paris design studio has being designed the novel biomimetic trees to absorb carbon dioxide,Maglev train ，shanghai,Geothermal power field,Geothermal power is the use of underground hot water and steam as a power source for a new power generation technologies.,Hydrogen fuel,Solar power plant,In Spai

8、n Covering an area of two square kilometers Power supply for 50,000 families， Thermal power plant of the same generating capacity will be 18 million tons of carbon dioxide emissions,The British established the worlds largest wind power station, the power plant can power 750,000 homes,Wind power stat

9、ion,Tidal energy power plant,Portugal to establish the worlds first tidal power stations, power plants can provide sufficient energy for 15,000 households,Indian human excreta is used to generate electricity and provide electricity for street lights,Biogas plants,Chinas Three Gorges Dam is the large

10、st hydroelectric power station in the world, the total generating capacity of its total generating capacity equivalent to 22 large coal-fired power station,Hydroelectric power stations,Nuclear Power Plant,As of the end of 2005, the worldwide nuclear power to run a total of more than 440 units, power generation accounts for about 16% of the total world electricity generation,we should use more clean energy and less coal and oil. And we should go to work on