1、B3U2 Welcome 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 be able to:Part
2、1 Lead-in What natural disasters in history have you heard about?tornadotyphoontned龙卷风龙卷风Famous saying:P15Nature 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。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 kin
3、d 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landslidefall 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 c
4、ause an earthquake,which is _ of the earths 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.a sudden shakinghot gasesearth and rockPart 3 Further exploration A natural disa
5、ster is a _ natural event that causes great damage and suffering.It can happen _,at any time.Let s look at some examples.An earthquake 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 e
6、very year,but most do not cause any damage.Serious earthquakes,however,can destroy entire cities.When a _ earthquake hit San Francisco 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 la
7、rge 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 _ 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 abou
8、t 7,000 large animals.A landslide happens when a large amount of earth and rock falls down a hill or mountain.Landslides are often caused by heavy _,earthquakes,volcanic eruptions or other natural disasters.Sometimes they are also caused by human activities such as cutting down forests.Serious lands
9、lides can cause whole mountainsides to _ away.Villages or towns located in the path of such landslides can be _ destroyed.In 2014,a landslide in India killed at least 150 people.suddenanywheremovementwhereterribleburnswheneruptionrainfallrollcompletelyListen again and try to fill in the blanks accor
10、ding to what you heard.Discuss the following questions:Discuss the following questions:1、How many small earthquakes happen every year?2、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
11、storms.Heavy rainfall,earthquakes,volcanic eruptions or other natural disasters.Sometimes human activities such as cutting down forests 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
