The Power of The Power of NatureNature

From chanFrom chan

Warming up and reading

Questions : Questions : • Do you think the power of Do you think the power of

nature is huge?nature is huge? • Can you name some other Can you name some other

natural disasternatural disaster? (Please work with ? (Please work with your partners and make a list of natural your partners and make a list of natural disasters which you have known.)disasters which you have known.)

mud-rock flowmud-rock flow

tsunamiearthquake

hurricane /typhoon

snowstorm

droughtsandstorm

hailstorm flood

thunder/ lightning

volcano-eruption

Boiling rock erupts from the crater; the lava flows slowly down the mountain.

Magma chamber

Lava

Crater

Ash cloud/volcanic ash

What do you know about volcano?What do you know about volcano?

1.How is a volcano formed?

The rocks under the earth becomes hotter and hotter and erupted from the mountain.

Near the oceans.

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

Read through the passage quickly to Read through the passage quickly to checkcheck whether the guesses were correctwhether the guesses were correct.

Guess:Guess: what kind of things a volcanologist might do. (Please Please work with partners and write your guess work with partners and write your guess down.)down.)

Unit 5 An Exciting Job

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.

Fast reading

Read the text fast and answer the questions

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.

• Read the passage carefully and Read the passage carefully and answer:answer:

• 1.Why is the author's job 1.Why is the author's job important?important?I have the greatest job in the world

Danger excites me and makes me feel alive

Protect people from the volcano

Careful-reading

• What made the author realize What made the author realize that an eruption occurred?that an eruption occurred?

• What did the writer see and What did the writer see and what did he think of it?what did he think of it?

My bed began shaking

A strange sound

My bed room became

as bright as day

An absolutely fantastic sight

2. Read the third paragragh aboutthe first sight of volcano eruption

Red hot lava was fountaining hundreds of metres into the air

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 light was caused by the red-hot The light was caused by the red-hot rocks and gas that erupted from the volcano.rocks and gas that erupted from the volcano.

The scientists needed to get samples of The scientists needed to get samples of the lava so they could study them.the lava so they could study them.

The author was wearing special The author was wearing special protective clothing that made it difficult to protective clothing that made it difficult to walk.walk.

Get the main idea of each Get the main idea of each paragraphparagraphThe writer describes his job and its

importance.

The writer describes his first sight of a volcano eruption.

The writer describes his first closer look at a volcano eruption.

The writer states again his love for his work and volcanoes.

Para 2Para 2

Para 5Para 5

Para 4Para 4

ParaPara 33

Para 1Para 1

The writer expresses his love for his job and why he loves it.

Now listen to the radio carefully, and Now listen to the radio carefully, and choose the best answers.choose the best answers.

1. What’s the main idea of the text?

A. 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

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

Discussion:Discussion:Having learnt a little more about the wor

k of a volcanologist.

1. what skills should a volcanologist have?

2. do you think it is an occupation you wdo you think it is an occupation you would enjoy?ould enjoy? Discuss your reasons with others in your class.

Assignment (Homework) Assignment (Homework)

1.1.Find out words, expressions aFind out words, expressions and sentences which you think nd sentences which you think are useful, important or difficare useful, important or difficult to understand.ult to understand.

2.2.Finish exercises in Learning aFinish exercises in Learning about language.(Ex 1, 2)bout language.(Ex 1, 2)

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

volcano

• 火山爆发原因火山爆发原因 ---------------- 地球内部充满着炽热的岩浆。在极大的压力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。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。

• 分类分类 ------ ------ 火山可分活火山、死火山和休眠火山。前面讲到的坦火山可分活火山、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。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。我国境内的内的 600600 多座火山，大都是死火山。有些火山在历史上有过活动多座火山，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。火山可能会突然“醒来”，成为活火山。

• 后果后果 ----- ----- 猛烈的火山爆发会吞噬、摧毁大片土地，把大批生命、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。 象奇特，往往成为旅游胜地。

• 预报预报 -------- 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、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”。花”。

An extinct volcano

dormant volcano

An active volcano

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.

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

gas

liquid

solid

Lava( 熔岩 )

vapour 水蒸气 , carbon dioxide, nitrogen( 氮 ), sulphur( 硫磺 ), etc.

bits of rock and volcanic ash, etc.

2.What will be produced after the eruption of volcano?

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