人教版 (2019)必修 第一册Unit 4 Natural disasters教学课件ppt

这是一份人教版 (2019)必修 第一册Unit 4 Natural disasters教学课件ppt，共21页。PPT课件主要包含了earthquake，flood，sandstorm，typhoon，landslide，hurricane，drought，mudflow，tsunami，Earthquake等内容，欢迎下载使用。

Mr. Nature is emtinal
Warming-up: Activity ① Intrduce a new friend
Pre-reading
It will cause natural disasters when he is angry. Can yu list sme examples f natural disasters?
Warming-up: Activity ② Brain strming
vlcan eruptin
A sudden, vilent shaking f the earth’s surface
A large amunt f water cvering an area that is usually dry
A vilent trpical strm with very strng winds
A strm in a desert in which sand is blwn int the air by strng winds
A mass f earth, rck, etc. that falls dwn the slpe f a muntain r a cliff
A vilent strm with very strng winds, especially in the western Atlantic Ocean
A lng perid f time when there is little r n rain
An extremely large wave in the sea caused, fr example, by an earthquake
Vlcan Eruptin
A fast-mving dwnhill flw f mud and sil lsened by rainfall r melting snw
A vlcanic eruptin is when lava and gas are released frm a vlcan—smetimes explsively
Which disaster may cause the wrst damaget us? why?
Earthquakes can cause secndary disasters!
Fire, landslide, fld (tsunami), txic gas leakage, infectius diseases (plague)... ...
Pre-reading: Activity ① Search infrmatin with Ipad
Surf the internet and try t find sme pictures that hit yu befre r after an earthqauke in Tangshan r San Francisc.Then share yur feelings with yur classmates.
Task neDescribe the picture.In the picture, we can see... ...
Task twShare yur feelingsI feel sad/angry/frigthened..., because...
Pre-reading: Activity ② QQ chat with yur Ipad
Wrk in grups, and write dwn the questins that yu want t knw abut earthquake in ur chatting rm in QQ.
Why an earthquake happens?
What may happen befre an earthquake?
What shuld we d when an earthquake happens?
D yu knw why an earthquake happens?
The wrld is divided int six majr plates: Asia-Eurpe plate, Pacific plate, American plate, African plate, Indian Ocean plate and Antarctica plate.
Earthquakes ccur because the earth's crust accumulates stress in the prcess f plate mvement. When the Earth's crust can n lnger accumulate stress, the Earth's crust breaks, releasing seismic waves that shake the grund.
Pre-reading: Activity ③ Brain strming
There might be sme strange signs!
The earth will shake, and cracks will appear in the grund
The weather will be
The wall f a well will be The water in a well will
What else can yu think f ?
Animals have the ability t sense earthquakes
Animals have the ability t sense earthquakes!
They might be nt willing t enter the huse, and their behavir seemed very anxius s that they even can’t eat and sleep well. What else?
What insights can yu get frm animals’ ability t sense earthquakes?
What will happen, if peple ignre these signs?
Raise ur awareness t avid the damage and destructin f natural disasters!
Pre-reading: Activity ④ Discussin in grups
Pre-reading: Activity ⑤ Rle-play
Grup 1-2 are acting in scene 1 Hw t be prepared, Grup 3-4 are preparing fr scene 2 What t d during an earthquake,Grup 5-6 are preparing fr scene 3 What t d after an earthquake.