1、Greenhouse Effect,1122011 李蕊 1122012 李潤怡,what is greenhouse effect,what is the reason that causes greenhouse effect,what is the impact of greenhouse effect and global warming,what can we do to solve this problem,What is greenhouse?,A greenhouse (also called a glasshouse) is a building in which plant

2、s are grown.,A greenhouse is a structural building with different types of covering materials, such as a glass or plastic roof and frequently glass or plastic walls; it heats up because incoming visible solar radiation from the sun is absorbed by plants, soil, and other things inside the building. A

3、ir warmed by the heat from hot interior surfaces is retained in the building by the roof and wall.,Greenhouses allow for greater control over the growing environment of plants. Depending upon the technical specification of a greenhouse, key factors which may be controlled include temperature, levels

4、 of light and shade, irrigation, fertilizer application, and atmospheric humidity.,2 kinds of greenhouse effect?,What is greenhouse effect?,natural,Definition: The so-called greenhouse effect is short-wave solar radiation through the atmosphere into the ground, and warming the ground after the lengt

5、h of radiation being released in the atmosphere by absorbing carbon dioxide and other substances, thereby creating the effect of atmospheric warming, just like the greenhouses effect on plants.,greenhouse gas:,Carbon dioxide is not the only greenhouse gas. Other gases, such as methane (CH4) and nitr

6、ous (氮的、硝的）oxide (NO), are even stronger infrared （紅外線的）absorbers.,If the Earth had no greenhouse effect, its average surface temperature would be very low of about -18C rather than the comfortable 15C found today. The natural greenhouse effect is essential for maintaining the proper temperature nee

7、ded to sustain life on Earth.,What is greenhouse effect?,Man-made,How Do We Human Beings Contribute to the Greenhouse Effect? Where Do We Release Greenhouse Gases?,Burning natural gas and coal in daily life.,Transportation Gasoline for automobile engines raises the level of carbon dioxide in the atm

8、osphere.,Many factories produce long-lasting industrial gases, which contributes significantly to the enhanced greenhouse effect and global warming that is currently under way.,Deforestation,Population growth,Green House Effect and Global Warming,Global warming is when the earth heats up(the tempera

9、ture rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earths atmosphere, which increases the temperature.,Sea Level Rise,By the year 2100 (and some as soon as 2030), would flood 15 percent of Egypt（埃及）, and 12

10、percent of Bangladesh(孟加拉國). The Maldives (馬爾代夫）in the Indian Ocean would almost completely disappear.,Extreme weather Water shortage,Ecosystems will change Diseases,What should we do :,1.Use public transports Drive Less and Drive Smart Fewer emissions & saving gasoline 2. Forestation Absorb carbon, give off oxygen 3. Reduce, Reuse, Recycle Reduce waste, save 2,400 pounds of carbon dioxide,4. Change a Light Bulb CFL(compact fluorescent light)