全球变暖英文演讲幻灯片.ppt
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Could go extinct on some islands as beaches are flooded
Other species may go extinct as rainfall patterns change throughout the world
英语全球变暖
ቤተ መጻሕፍቲ ባይዱ
So we must take effective measures to solve this problem
GlobalWarming
英语全球变暖
1.What is global warming
Global warming is the gradual rise in the Earth's temperature caused by high levels of carbon dioxide and other gases in the atmosphere.
英语全球变暖
2.What caused global warming
Natural causes
Greenhouse effect
Human reasons
Human activities-emission
英语全球变暖
Greenhouse effect
The so-called greenhouse effect is short wave solar radiation through the atmosphere into the ground, and warming the ground after the length of radiation being released in the atmosphere by absorbing carbon dioxide and other substances, thereby creating the effect of atmospheric warming.
Other species may go extinct as rainfall patterns change throughout the world
英语全球变暖
ቤተ መጻሕፍቲ ባይዱ
So we must take effective measures to solve this problem
GlobalWarming
英语全球变暖
1.What is global warming
Global warming is the gradual rise in the Earth's temperature caused by high levels of carbon dioxide and other gases in the atmosphere.
英语全球变暖
2.What caused global warming
Natural causes
Greenhouse effect
Human reasons
Human activities-emission
英语全球变暖
Greenhouse effect
The so-called greenhouse effect is short wave solar radiation through the atmosphere into the ground, and warming the ground after the length of radiation being released in the atmosphere by absorbing carbon dioxide and other substances, thereby creating the effect of atmospheric warming.
英语全球变暖PPT
Other species may go extinct as rainfall patterns change throughout the world
So we must take effective measures to solve this problem
What should we do?
The earth is our home,we have the responsibility to protect it .We must take measures to prevent global warming as eraly as possible.
Effects on Wildlife
Polar Bears
Require pack ice to live Might eventually go extinct in the wild
Sea turtles
Breed on the same islands as their birth
Could go extinct on some islands as beaches are flooded
2.What caused global warming
Natural causes
Greenhouse effect
Human reasons
Human activities-emission
Greenhouse effect
The so-called greenhouse effect is short wave solar radiation through the atmosphere into the ground, and warming the ground after the length of radiation being released in the atmosphere by absorbing carbon dioxide and other substances, thereby creating the effect of atmospheric warming.
So we must take effective measures to solve this problem
What should we do?
The earth is our home,we have the responsibility to protect it .We must take measures to prevent global warming as eraly as possible.
Effects on Wildlife
Polar Bears
Require pack ice to live Might eventually go extinct in the wild
Sea turtles
Breed on the same islands as their birth
Could go extinct on some islands as beaches are flooded
2.What caused global warming
Natural causes
Greenhouse effect
Human reasons
Human activities-emission
Greenhouse effect
The so-called greenhouse effect is short wave solar radiation through the atmosphere into the ground, and warming the ground after the length of radiation being released in the atmosphere by absorbing carbon dioxide and other substances, thereby creating the effect of atmospheric warming.
全球变暖-温室效应-英文版PPT课件
2021
8
First
governments can support research. For example, they should encourage companies to develop transportation that cause less pollution. They should also support alternative sources of electricity from wind and water rather than from oil and coal.
Measures
主讲speaker： XXX 制作producer：XXX 翻译translaters：XXX
2021
1
contents
Ⅰ、 Individual efforts Ⅱ、 governments efforts Ⅲ、What can we students do?
2021
2
2021
2021
15
What can we students do
No waste at school Meals and Events
Reduce use of boxes,water bottles,plastic bags in your school parties.
2021
16
2021
17
2021
5
Individual efforts
Second, have a tree planting day at your school .Plant trees will reduce carbon dioxide and create clean air .
全球变暖PPT
What is global warming
Global warming is the gradual rise in the Earth's temperature caused by high levels of carbon dioxide and other gases in the atmosphere.
Individual efforts
1. 2. 3. 4. Say no to plastic bags Don’t use disposable chopsticks Go to wok by bus、bike or on foot Buy recyclable products and so on
Copenhagen World Climate Conference ended in Copenhagen, capital of Denmark on Dec. 18th, 2009. This conference is known as the "last chance for human beings to be saved".
Contents:
1.What is global warming? 2.What caused global warming? 3.What are the effects of global warming? 4.What should we do about global warming?
Global Warming
Lecturer: Reagan Date:21th,Oct,2013
College of Water Resources and Architectural Engineering
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4.What should do
1.Individual efforts 2.National efforts
First, we should use more clean energy and less coal and oil.
Second, we should go to work foot or by bus instead of driving a car if possible.
2.What caused global warming
Natural causes
Greenhouse effect
Human reasons
Human activities-emission
Greenhouse effect
The so-called greenhouse effect is short wave solar radiation through the atmosphere into the ground, and warming the ground after the length of radiation being released in the atmosphere by absorbing carbon dioxide and other substances, thereby creating the effect of atmospheric warming.
Greenhouse effect
Human activities-emission
Burning natural gas, coal, and oil Electricity generation Deforestation Many factories produce long-lasting industrial gases
climate change 全球变暖37页PPT
• Since the TAR, progress in understanding how climate is changing in space and in time has been gained through improvements and extensions of numerous datasets and data analyses, broader geographical coverage, better understanding of uncertainties, and a wider variety of measurements.
Nitrous Oxide
• The global atmospheric nitrous oxide concentration increased from a pre-industrial value of about 270 ppb to 319 ppb in 2005.
Anthropogenic contributioቤተ መጻሕፍቲ ባይዱs
• The linear warming trend over the last 50 years (0.13 [0.10 to 0.16]°C per decade) is nearly twice that for the last 100 years.
2 Human and Natural Drivers of Climate Change
• The combined radiative forcing due to increases in carbon dioxide, methane, and nitrous oxide is +2.30[+2.07 to +2.53]wm-2.
Nitrous Oxide
• The global atmospheric nitrous oxide concentration increased from a pre-industrial value of about 270 ppb to 319 ppb in 2005.
Anthropogenic contributioቤተ መጻሕፍቲ ባይዱs
• The linear warming trend over the last 50 years (0.13 [0.10 to 0.16]°C per decade) is nearly twice that for the last 100 years.
2 Human and Natural Drivers of Climate Change
• The combined radiative forcing due to increases in carbon dioxide, methane, and nitrous oxide is +2.30[+2.07 to +2.53]wm-2.