板块运动
Oriental Ladder Bilingual School Geography 2006--05
The Movement of Plate
Land & Ocean Change
东方阶梯双语学校—柳钊
Teaching Goal:
Know about the change of the land & ocean;
了解海陆的变迁；
Know about the theory of continental drift and the theory of plate tectonics;
了解大陆漂移理论和板块运动理论；
Know about the six large plates;
了解六大板块；
Know about the relationship of the movement of plate and the landform;
了解板块运动与地形的关系； Teaching Focus:
The movement of plate
板块运动
Teaching Procedures:
Before the new class, let’s look at these maps. There are some continent’s
outline, and say out their names.
在新课之前，先看一些大陆轮廓的图片，请说出它们的名称。
This map shows us the distribution of the lands & oceans. But long time ago
was the distribution of the lands & oceans like that? Now we know the answer is ―no‖,
but at that time many people thought ―yes‖.
这张图片是目前的海陆分布图。很久以前海陆是这样分布的吗？现在我
们知道不是的，但以前的人认为是的。
Look at this picture, one day the German scientist Wegener was sick. When he
was lying on the bed, he looked at the world map that was hung on the wall. He found
the America & the Africa continent could be joined together. Then he wanted to find
out the proof to prove his suppose. (Watch the video)
看下一张图，一天德国科学家魏格纳生病了，他躺在床上，正好对着挂
在墙上的世界地图。看着看着他发现美洲和非洲大陆好像可以拼凑在一起。接着
他就寻找证明这一想法的证据。
The theory of Continental Drift
There was only one continent on the earth which was ocean around it 300
million years ago. About 200 million years ago, this continent began to split. Finally
there were many continents as we know now. That was Wegener’s the theory of
continental drift.
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Oriental Ladder Bilingual School Geography 2006--05
在300万年前，地球上只有一块被海水包围着的大陆。在大约200万
年前，这块大陆开始分裂。最后就成了今天我们所看到的这几块大陆。这是魏格
纳的大陆漂移理论。
If Wegener was right, do you know what the best proof is? –Fossils. We
know the same plants & animals may live in the same place. Look at the picture, the
scientist found the same plants’ & animals’ fossils in the two continents.
如果魏格纳是对的，那什么是最好的证据呢？—化石。一般来说同种
的植物和动物生活在同样的地方。这张图上显示：同类的动植物化石出现在了两
块大陆上。
Based on it , many scientists worked hard to improve the theory. This map
shows us the Volcano-Earthquake Belts in the world. Say out the location of the belts.
We can see the belts are along the coastline.
(Watch the video: the Earthquake in Japan )
在此基础上，科学家寻找更多的证据来证明这一理论。这张是世界火
山地震带图。找出这条带的地理位置。可以看到这条带是沿着海岸线的。<环太
平洋火山地震带和喜马拉雅&地中海火山地震带>
Where is Japan？ In the Belt between Asia &Pacific Ocean.
日本的地理位置在亚洲和太平洋之间。
The theory of Plate Tectonics
1. Six large Plates.
The scientists found there are large plates along the belts: the Eurasian,
America, Africa, Indian, Pacific and Antarctic Plates. Each plate was mainly made up
of continent and ocean. And the Pacific Plate is almost made up of ocean. (In the large
plate, there would be some small plates: Nazca…)
科学家总结出在这条带周围有六大板块：亚欧板块、美洲板块、非
洲板块、印度洋板块、太平洋板块和南极洲板块。每一块板块都由大陆及其附近
的海洋组成，除了太平洋板块几乎由海洋组成。（在大的板块中还有一些小的板
块：比如纳兹卡等）
2. The movement of plates
The movement of plates causes the changes of the land & ocean, for example
the continental drift and the form of major landforms.
板块的运动引起了海陆的变化，例如大陆的漂移，主要地形的形成等。
Watch this flash, is the Ocean larger or smaller between these continents?
Look at this flash, carefully, watch the movement of the continents. Do you know
which continents they are? On the last map, there are the distribution of land & Ocean
now. But these changes are going on continuously and slowly.
看动画演示，在大陆之间的海洋是越来越大还是越来越小？仔细观察
大陆的运动，知道这些都是什么大洲吗？动画的最后一张图片就是现在的海陆分
布。但这些变化仍在继续，它是很缓慢的。
Let’s make some examples with our desks. When they crash or split, what
will happen?
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Oriental Ladder Bilingual School Geography 2006--05
我们可以用桌子做一下类似的试验：当桌子撞击在一起或分开后，将会
有什么变化？
1) crash- mountains & Islands
撞击—山脉或岛屿
Himalaya mountains. Malay Archipelago
喜马拉雅山、马来群岛；
2) split- Oceans & valleys
分裂—海洋或峡谷
Atlantics Ocean. Great Rift Valley
大西洋、东非大裂谷；
(watch the video: the Himalaya)
The theory of Plate tectonics shows us that the continent floats with the
movement of the plate which includes this continent and oceanic crust below. And
usually the volcanoes & earthquakes happen at the plate’s boundary.
板块运动理论告诉我们：大陆的漂移和板块的运动还包括了陆壳及洋
壳。一般来说火山和地震会出现在板块的边缘。
Take out the exercise, find out the reasons that the form of the mountains.
Why are the oceans becoming larges or smaller?
拿出练习册，找出山脉形成的原因；海洋越来越大火越来越小的原因。
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