The Power of Nature

1. Unit 5 The Power of Nature From chan Warming up and reading

2. Warming up Questions : • Do you think the power of nature is huge? • Can you name some other natural disaster? (Please work with your partners and make a list of natural disasters which you have known.)

3. earthquake tsunami hurricane /typhoon mud-rock flow

4. snowstorm hailstorm flood thunder/ lightning sandstorm drought

5. volcano-eruption

6. What do you know about volcano? Ash cloud/volcanic ash Crater Lava Boiling rock erupts from the crater; the lava flows slowly down the mountain. Magma chamber

8. 1.How is a volcano formed? The rocks under the earth becomes hotter and hotter and erupted from the mountain.

9. 2.Where is the most possible place that a volcano may erupt? Near the oceans.

10. Pre-reading Guess: what kind of things a volcanologist might do. (Please work with partners and write your guess down.) Read through the passage quickly to checkwhether the guesses were correct.

11. Unit 5 An Exciting Job

12. Fast reading Read the text fast and answer the questions 1. What is the writer and does he like his job? 2. What is Mount Kilauea? He is a volcanologist And he likes his job very much. It is one of the most active Volcano in Hawaii.

13. 3. What is the volcanologist wearing when getting close to the crater? He is wearing white protective suits that covered his whole body, helmets, big boots and special gloves, just like a spaceman.

14. Read the passage carefully and answer: 1.Why is the author's job important? Careful-reading I have the greatest job in the world Danger excites me and makes me feel alive Protect people from the volcano

15. What made the author realize that an eruption occurred? What did the writer see and what did he think of it? 2. Read the third paragragh about the first sight of volcano eruption My bed room became as bright as day My bed began shaking A strange sound Red hot lava was fountaining hundreds of metres into the air An absolutely fantastic sight

16. The light was caused by the red-hot rocks and gas that erupted from the volcano. 3. What caused the writer’s bedroom to become as bright as day even though it was night? 4. Why did the scientists have to get close to the volcano after it began erupting? 5. Why was it difficult for the writer to walk towards the edge of the crater? The scientists needed to get samples of the lava so they could study them. The author was wearing special protective clothing that made it difficult to walk.

17. The writer describes his job and its importance. Para 1 The writer expresses his love for his job and why he loves it. Para 2 The writer describes his first sight of a volcano eruption. Para3 The writer describes his first closer look at a volcano eruption. Para 4 The writer states again his love for his work and volcanoes. Para 5

18. Now listen to the radio carefully, and choose the best answers. • 1. What’s the main idea of the text? • Seeing the volcano with the volcanologist’s own eyes • B. Working outdoors • C. Working for the HVO • D. Helping other scientists • 2. Did the writer experience an eruption ? • A. Yes B. No • C. Certainly D. I’m afraid not A A

19. 3. What jobs does the writer do in the text? A. Watching the volcano B. Moving the people’s house C. Collecting information about Mount Kilauea D. Saving many lives 4. What natural disaster did you experience? A. An earthquake B. A hurricane C. A volcano D. never C D

20. Discussion: Having learnt a little more about the work of a volcanologist. • what skills should a volcanologist have? 2. do you think it is an occupation you would enjoy? Discuss your reasons with others in your class.

21. Assignment (Homework) • Find out words, expressions and sentences which you think are useful, important or difficult to understand. • Finish exercises in Learning about language.(Ex 1, 2)

22. Do you want to know more knowledge about Volcano?

23. volcano

24. 火山爆发原因--------地球内部充满着炽热的岩浆。在极大的压力下，岩浆便会从薄弱的地方冲破地壳，喷涌而出，造成火山爆发。火山爆发原因--------地球内部充满着炽热的岩浆。在极大的压力下，岩浆便会从薄弱的地方冲破地壳，喷涌而出，造成火山爆发。 • 分类------ 火山可分活火山、死火山和休眠火山。前面讲到的坦博拉火山和夏威夷群岛上的火山，现在还在活动，这就是活火山。死火山是指史前有过活动，但历史上无喷发记载的火山。我国境内的600多座火山，大都是死火山。有些火山在历史上有过活动的记载，但后来一直没有活动，这种火山就称作休眠火山。休眠火山可能会突然“醒来”，成为活火山。 • 后果----- 猛烈的火山爆发会吞噬、摧毁大片土地，把大批生命、财产烧为灰烬。可是令人惊讶的是，火山所在地往往是人烟稠密的地区，日本的那须火山和富士火山周围就是这样。原来，火山喷发出来的火山灰是很好的天然肥料，富士山地区的桑树长得特别好，有利于养蚕业；维苏威火山地区则盛产葡萄。火山地区景象奇特，往往成为旅游胜地。 • 预报----在人类能够控制火山活动之前，加强预报是防止火山灾害的唯一办法。科学家对火山爆发问题的研究，常常得益于动、植物的某种突然变化。许多动物往往在火山爆发之前就纷纷逃离远去，似乎知识大祸即将临头。印度尼西亚爪哇岛上有一种奇特的植物，在火山爆发之前会开花，当地居民把它叫做“火山报警花”。

25. An extinct volcano dormant volcano An active volcano

26. Mount Vesuvius维苏威火山 This mountain has erupted more than 50 times since the eruption in 79 A.D., when it buried Pompeii and its sister city, Herculaneum. After Pompeii was buried and lost to history, the volcano continued to erupt every 100 years until about 1037 A.D., when it entered a 600-year period of quiescence. In 1631, the volcano killed an additional 4000 unsuspecting inhabitants.

27. Mount Kilauea基拉韦厄火山 It is Hawaii's youngest and yet most active volcano.It first erupted in January 1983 and has been active ever since. In the past 245 years there have been 62 eruptions... That's about an eruption every four years. Mt. Kilauea is a shield volcano-the largest types of volcanoes in the world and have fluid lava and are basically, just broad slopes. 2007-5-25 夏威夷：基拉韦厄火山喷发

28. 2.What will be produced after the eruption of volcano? vapour水蒸气, carbon dioxide, nitrogen(氮), sulphur(硫磺), etc. gas liquid Lava(熔岩) bits of rock and volcanic ash, etc. solid

29. http://v.youku.com/v_show/id_XMTg0MzMxNzY4.html