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1、Unit 5 The Power of Nature,Remember what happened on May.12,2008?,Earthquake,Do you know any other natural disasters?,Warming up,natural disasters,sandstorm,typhoon,hurricane,Tornado龙卷风,earthquake,tsunami,debris flow土石流,snowstorm,thunderstorm,volcano,The power of nature,Have you ever seen a volcano?
2、,volcano-eruption,Vesuvius volcano 维苏威火山,Pompeii,公元79年维苏威火山的爆发掩埋了一座城市！虽然地球史上每一次火山爆发无不令地貌沧海桑田,但公元79年维苏威火山的爆发却的确令一座城市获得了永生-庞贝无法躲过火山的劫难,但它被掩埋封存在渐渐冷却、凝固、变硬的火山灰中,最终竟躲过了上千年岁月的侵蚀。,1.How is a volcano formed?,The rocks under the earth become hotter and hotter and erupt from the mountain.,What do you know mor
3、e about volcano?,Boiling rock,Lava,Crater,Ash cloud,Boiling rock erupts from the crater;,the lava flows slowly down the mountain.,volcano-eruption,volcano,Near the oceans.,Where is most possible for a volcano to erupt?,An extinct volcano死火山,An active volcano活火山,3.What types of volcanoes do you know?
4、,A dormant volcano休眠火山,Imagine,Would you like to be a volcanologist to observe and study volcanoes?,Reading,An Exciting Job,Whats the main idea of the article?,Fast reading,The writer expressed his _ for his job as a _ and told us one of his unusual _ in Mount Kilauea,Hawaii.,love,volcanologist,expe
5、riences,Part one(Para 1-Para 2),1)Why is a volcanologists job important?2)Where is Mount Kilauea?3)The writer doesnt mind the occasional danger of his job because _ _.,It can warn people when the volcano is going to erupt and save many lives.,In Hawaii.,danger excites him and make him feel alive,Par
6、t two(Para 3-Para 4),1.Why does the boiling rock erupting from a volcano cause less damage?2.What made the author realize that an eruption occurred?a.I heard a strange sound.b.my bedroom became as bright as day.c.my bed began shaking.d.I ran out of the house into the back garden.,1,2,3,4,Because no
7、one lives near the top of mount kilauea.,3.What caused the writers bedroom to become as bright as day even though it was night?,The light that was caused by the red-hot rocks and gas that erupted from the volcano.,Part two(Para 3-Para 4),4.What does the writer mean by using“lucky”in the sentence“I w
8、as lucky enough to have a much closer look at it.”?5.Why did the scientists have to get close to the volcano after it began erupting?,To get some lava for later study.,It was his first sight of an eruption.It was the first time for him to watch the crater.,6.What did the scientists do after the erup
9、tion?,Put on white protective suits helmets,big bootsLine 34,Dropped as close as possible to the crater Line 31,Slowly made our way to the edge of the craterLine 35,Looked down into the red,boiling centreLine 36,Climbed down into the crater to collect some lavaLine 36,Part two(Para 5),What attracts
10、the writer after he has studied volcanoes for more than twenty years?,The author is impressed by the beauty of the eruption and also by its potential to cause great damage.,1.The writer doesnt mind the occasional danger of his job because _.,A.He travels to unusual places and meets interesting peopl
11、e from all over the worldB.He likes the different ways of working,C.He thinks his job the most importantD.He is excited about dangers and feels alive,2.As a result of the volcanologists work,_.,other scientists predict the progress of lava from the volcanoB.A few people have been warned to leave the
12、ir homes C.the eruption causes less damageD.the eruption may be prevented breaking out,Boiling rock which erupts from the volcano and crashes back to earth causes less damage.B.The lava that flows slowly down the mountain causes far more damage.,3.Whats the main idea of para.3?,C.The eruption is muc
13、h more exciting to watch.D.There had been an eruption in the side of the mountain.,A.Because his bed began shaking.B.Because his bedroom suddenly became as bright as day.C.Because he thought there was an earthquake in Hawaii.D.Because he wanted to collect information about the eruption.,4.Why did th
14、e volcanologists run out of the house into the back garden?(para4),A.He left safer on the top while the other two scientists climbed down into the crater.B.It was his first sight of an eruption.C.It was the first time for him to watch the crater.D.both B and C.,5.What does the writer mean by using“l
15、ucky”in the sentence“I was lucky enough.it.”?,6.What does the word“alive”mean in the sentence“.danger excites me and makes me feel alive”?Living or not dead.B.Active or lively.C.Continuing.D.Healthy.,7.Why did the writer put on special clothes to look at the crater?Because he wanted to take some spe
16、cial photos.B.Because he was concerned about his safety.C.Because the other two scientists asked him to.D.Because he wanted to climb down into the crater.,unusual,interesting,volcano,Collects,Read the text and fill in the blanks.,predict,eruption,shaking,bright,was fountaining,made our way,Homework,Learn about the text in details.,
