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1、B3U2 Natural disastersWelcome to the unit Teaching Objectives:get the basic information of three types of natural disasters after watching the video;talk about different types of natural disasters;share with peers the information of the natural disasters in history.After this section,students should
2、 be able to:Part 1 Lead-in What natural disasters in history have you heard about?tornadotyphoontned龙卷风龙卷风volcanovlkenvolcanovlkendrought dratdrought dratfloodfloodlandslide lndsladlandslide lndsladtsunami tsunmitsunami tsunmiearthquakekwekearthquakekwekFamous saying:P15Nature is kind of a loving mo
3、ther,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。大自然是慈爱的母亲，也是冷血的屠夫。维克多维克多雨果雨果维克多雨果：法国作家；代表作巴黎圣母院Part 2 Three natural disasters PresentationWhat kind of types of natural disasters are mentioned in this video?Earthquakeplate n.板块surface n.表面volcanoerupt v.爆发ash n.灰escape v.逃离landslid
4、efall down 倒塌hill n.山丘Try to use your words to explain why or how it happened?PracticeListen to the video again and check your answer.Plates moving underground can cause an earthquake,which is _ of the earths surface.When a volcano erupts,_,volcanic ash and even rocks escape through a large opening
5、at the top.A large amount of _ falling down a hill or mountain is called a landslide.a sudden shakinghot gasesearth and rockPart 3 Further exploration A natural disaster is a _ natural event that causes great damage and suffering.It can happen _,at any time.Let s look at some examples.An earthquake
6、is a sudden shaking of the earth s surface,caused by the _ of plates underground.Earthquakes are most common _ plates meet.Several million small earthquakes happen every year,but most do not cause any damage.Serious earthquakes,however,can destroy entire cities.When a _ earthquake hit San Francisco
7、in 1906,about 3,000 people died and over 80 per cent of the city was destroyed.A volcanic eruption occurs _ hot gases,volcanic ash and even rocks escape through a large opening at the top of a volcano.The gases and ash can cause acid rain and even storms.The hot liquid rock moving down the volcano _
8、 everything and anything in its way.The _ of Mount St Helens in 1980 was the worst volcanic disaster in the history of the United States.It killed 57 people and about 7,000 large animals.A landslide happens when a large amount of earth and rock falls down a hill or mountain.Landslides are often caus
9、ed by heavy _,earthquakes,volcanic eruptions or other natural disasters.Sometimes they are also caused by human activities such as cutting down forests.Serious landslides can cause whole mountainsides to _ away.Villages or towns located in the path of such landslides can be _ destroyed.In 2014,a lan
10、dslide in India killed at least 150 people.suddenanywheremovementwhereterribleburnswheneruptionrainfallrollcompletelyListen again and try to fill in the blanks according to what you heard.Discuss the following Discuss the following questions:questions:1、How many small earthquakes happen every year?2
11、、What can the volcanic gas and ash cause?3、What are landslides often caused by?Sevaral million small earthquakes happen every year.They can cause acid rain and even storms.Heavy rainfall,earthquakes,volcanic eruptions or other natural disasters.Sometimes human activities such as cutting down forests
12、 can also cause landsides.Task 1 ProductionWhat natural disaster in history have you heard about?How are these place now?An 8.0 magnitude earthquake hit Sichuan on 2008,May,12th.380 killed or disappeared in heavy rain in Chinas Zhengzhou in 2021.Forest fire killing 30 put out in southwest Chinas Sichuan in 2019 We Chinese work hand in hand to rebuild our planet!Task 2 THANKS