资源简介

(共18张PPT)
Natural Disasters and
Human Activities
Recognize the causes and effects of natural disasters
Master some ways to protect the environment
Realize the importance of envirnomental protection
Learning Objective
What disasters are mentioned in this text
Read and choose.
阅读关于自然灾害的课文，回答问题。
There are more and more discussions on natural disasters in recent years. It is known that sandstorms are caused naturally by strong winds blowing over loose soil or sand. Half a century ago, sandstorms happened every seven or eight years; now they come almost once a year. Experts tie the problem to the rapid urban development, and cutting down trees is another reason which is largely due to human activities. Some people do not pay enough attention to smog, and they don’t know it is partly caused by the gases from heavy industry and vehicles. These harmful gases also lead to acid rain, though a very small part of acid rain comes from volcanoes or wildfires. When these gases enter the air, they also lead to global warming.
Today we are growing too fast to remember the importance of sustainable development for both nature and our human world. Many of the natural disasters are due to the environmental damages caused by human activities.
Natural Disasters and Human Activities(1/2)
Read and choose.
阅读关于自然灾害的课文，回答问题。
It is lucky that humans have realized the importance of sustainable development as well as the environmental protection, and things are getting better. We are promoting the use of green energy, planting more trees and trying to stop global warming. People are advised to use electric cars and public transportation. It is definitely not in our hands to prevent all the disasters. But still, we should make some changes to the environment, and the number of such disasters is sure to reduce.
Natural Disasters and Human Activities(2/2)
What disasters are mentioned in this text
sandstorm smog Acid rain…
What are the natural causes and Human activties
of these disasters
Read and complete.
细读课文，找出导致文中自然灾害的原因及应对措施。
Disasters Natural causes Human activities
Sandstorm ______________________________ , cutting down trees
Smog / heavy industries and vehicles
Acid rain volcanoes, wildfires
Solutions strong winds blowing over loose soil or sand
rapid urban development
heavy industries and vehicles
We are promoting the use of green energy, planting more trees.
People are advised to use electric cars and public transportation.
What are the main reasons of nature disasters
Read and choose.
阅读关于自然灾害的课文，回答问题。
Today we are growing too fast to remember the importance of sustainable development for both nature and our human world. Many of the natural disasters are due to the environmental damages caused by human activities.
Natural Disasters and Human Activities(1/2)
What are the main reasons of nature disasters
Natural causes or
Human activities
How should we do
It is lucky that humans have realized the importance of sustainable development as well as the environmental protection, and things are getting better. We are promoting the use of green energy, planting more trees and trying to stop global warming. People are advised to use electric cars and public transportation. It is definitely not in our hands to prevent all the disasters. But still, we should make some changes to the environment, and the number of such disasters is sure to reduce.
Natural Disasters and Human Activities(2/2)
Group work
Do you know other ways to
protect the environment
Conclusion:
What have you learned in this lesson
Exercise:
We should make some changes to the environment,and ____ number of such disasters is sure to reduce.
A the B a
A
The earth is our home, let's work together to protect it. Our actions can make a big difference and lead to a better future!
（地球是我们的家园，让我们齐心协力。共同保护她。我们的行动将会产生巨大的影响，走向更美好的末来。）
Thanks for your time

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