牛津译林版（2019）必修 第三册Unit 2 Natural disasters Welcome to the unit 课件(共15张PPT)

(共15张PPT)
Welcome to the unit
Unit 2 Natural disasters
Natural disasters are extreme, sudden events caused by environmental factors that injure people and damage property.
What are natural disasters
Top 10 Natural Disasters
1. Hurricane
2. Earthquake
3. Tornado
4. Volcanic eruption
5. Tsunami
6. Flood
[t ne d ]龙卷风
[v l ke n ]
[tsu nɑ mi]
7. Wildfire
9. Avalanche 雪崩
10. Landslide
8. Drought
[ v lɑ nt ]
2008 Wenchuan earthquake in China
The earthquake struck China’s Sichuan Province on May 12, 2008. The earthquake was measured at 7.9 on Richter scale and killed about 87,000 people. It left millions of people homeless. Thousands of them were buried under the rubble of crushed communities. Factories, schools, homes were collapsed and it took troops and rescue teams significant amounts of effort to reach areas of southwestern China.
Hurricane Andrew of 1993
About 250,000 people were left homeless in Dade County alone. There were 26 deaths. 25,524 homes were destroyed and 101,241 others damaged.
2011 Tōhoku earthquake and tsunami
It was the most powerful earthquake ever recorded in Japan, and the fourth most powerful earthquake in the world. the Japanese National Police Agency report confirmed 15,899 deaths, 6,157 injured, and 2,529 people missing.
Plates moving underground can cause an earthquake, which is __________ of the earth’s surface.
When a volcano erupts, _________, volcanic ash and even rocks escape through a large opening at the top.
A large amount of ___________ falling down a hill or mountain is called a landslide.
Natural disasters are terrible reminders of the power of nature. Watch the video and finish the following exercises.
Video time
Plates moving underground can cause an earthquake, which is __________________ of the earth’s surface.
When a volcano erupts, ___________, volcanic ash and even rocks escape through a large opening at the top.
A large amount of __________________ falling down a hill or mountain is called a landslide.
Welcome to the Unit
a sudden shaking
hot gases
earth and rock
What does these disasters remind you of
Thinking:
the power of nature
the harm we’ve done to the earth
the cost we may pay
What might the natural disasters bring to people
Some people might be killed.
Disease might spread.
The local economy might be badly affected.
Huge food and water shortages might be caused.
Many roads and other infrastructure(基础设施) might
be destroyed.
Thinking
What should we do when natural disasters hit
Calm down.
Conserve energy and call for help.
Keep away from dangerous substances (power lines, trees, etc.).
Find evacuation(疏散) routes.
Focus on our most basic needs (shelter, water, air, food, security, sleep, medical care, etc.).
Discussion
Saying
Nature is kind of a loving mother, but also a butcher in cold blood.
— Victor Hugo
(大自然是慈爱的母亲， 也是冷血的屠夫。 )
“Those who destroy the environment will eventually be punished by nature.”