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1、人教课标 高二 选修 6 Unit 5,Unit 5 The power of nature,Warming up,Man has so much wisdom and power that the whole world has changed a lot.,tall buildings,modern agriculture,aeroplanes,atomic bomb,spaceship,modern medicine,modern communication,What do you think of,Have you ever considered how weak humans are
2、 compared with a volcano, hurricane or earthquake?,Can you list some natural disasters?,volcano erupting,Boiling rock erupts from the crater (火山口); the lava(熔岩) flows slowly down the mountain.,gas,liquid,solid,lava (熔岩),vapour, carbon dioxide, nitrogen (氮), sulphur (硫磺),bits of rock and volcanic ash
3、, etc.,1. How is a volcano formed?,One plate crashes down into another. The fluid rock becomes hotter and hotter with high pressure. Finally it rushes out. Thus, a volcano is formed.,Where is it most possible for a volcano to erupt?,Joints between the plates.,Joints between the plates.,Joints betwee
4、n the plates. Often near the oceans.,3. What types of volcanoes do you know?,extinct volcano (= one that is no longer active at all),dormant volcano (= one that is not active at the moment),active volcano (= one that may erupt at any time),Answer Yes or No to the questionnaire.,If you answered “yes”
5、 to all these questions, then volcanology could be a good career for you. Read the passage on page 34 to find out more about being a vocanologist.,Skimming,1. Whats the main idea of the article?,The writer expressed his _ for his job as a _ and told us one of his unusual _ in Mount Kilauea, Hawaii.,
6、love,volcanologist,experiences,2. Find out main ideas for each part.,Part 1 (Para 1-2) Part 2 (Para 3-4) Part 3 (Para 5),The writers _ and its _.,job,importance,The writers _ of watching the volcanic eruption.,experience,The _ for the writers enthusiasm about his job.,reasons,Scanning,Which of the f
7、ollowing is not the factor that makes the writers job the greatest in the world? its dangerous but exciting. B. the writer can travel to unusual places and meet people from all over the world. C. the writer can earn a lot of money. D. the writer is helping protecting people from the volcano.,2. What
8、 does a volcanologist not need most? A. knowledge of spaceships. B. research skills. C. skills of operating scientific equipment. D. observing skills.,Careful reading,Why does the writer say that he has the greatest job in the world? 2. Why is a volcanologists job important? 3. Where is Mount Kilaue
9、a?,Why does the writer say that he has the greatest job in the world?,2. Why is a volcanologists job important?,Volcanologists study volcanoes so that they can warn people when the volcano is going to erupt and save many lives.,3. Where is Mount Kilauea?,In Hawaii.,Job: _ - _ - _ _ importance: _ _ _
10、 feelings (adj.): _ - _ - _,Fill in the blanks according to this part.,volcanologist,collect information for a database,help scientists to predict where lava will flow and how fast,protect ordinary people from volcanoes,excited,/Save peoples lives by warning them to leave their homes.,never bored,fe
11、el alive,4. Why is the lava that flows on Mount Kilauea more dangerous than the actual eruption? 5. What caused the writers bedroom to become as bright as day even though it was night? 6. Why did the scientists have to get close to the volcano after it began erupting? 7. Why was it difficult for the
12、 writer to walk towards the edge of the crater?,4. Why is the lava that flows on Mount Kilauea more dangerous than the actual eruption?,No one lives near the crater.,The lava flows down the mountain and can cover up or burn villages in its path.,The lava flows down the mountain and can cover up or b
13、urn villages in its path. The rocks that erupt from the volcano dont damage anything because no one lives near the crater.,5. What caused the writers bedroom to become as bright as day even though it was night?,the red-hot rocks,gas that erupted from the volcano,The light was caused by the red-hot r
14、ocks and gas that erupted from the volcano.,6. Why did the scientists have to get close to the volcano after it began erupting?,samples of the lava,study the samples,The scientists needed to get samples of the lava so they could study them.,7. Why was it difficult for the writer to walk towards the
15、edge of the crater?,white protective suits,special glove,helmet,special boots,The author was wearing special clothing that made it difficult to walk.,What does the writer find impressive about volcanoes even after studying them for many years?,The writer finds their beauty and their potential to cause great damage very impressive.,Summary,I have
