"Changes of Sea and Land" Land and Ocean PPT Courseware 3

"Changes of Sea and Land" Land and Ocean PPT Courseware 3

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"Changes of Sea and Land" Land and Ocean PPT Courseware 3

learning target

1. Use examples to illustrate the changes of sea and land, and establish the scientific perspective of dialectical materialism on the continuous movement and change of sea and land.

2. Understand the basic concepts of continental drift and plate tectonics, and be able to explain related geographical phenomena and the distribution of volcanoes and earthquakes.

3. Through the development process of continental drift-plate tectonics theory, receive education in the history of science and cultivate your own scientific interests, scientific methods and spirit of inquiry.

Do you know the idiom "Vicissitudes of life"?

The vicissitudes of life - can be referred to as the vicissitudes of life, comes from the ancient Chinese book "The Legend of Immortals: Magu". Legend has it that in ancient times there was a fairy named Magu who claimed to have seen the East China Sea turn into mulberry fields three times. Later generations used this change of sea and land as a metaphor for the great changes in the world.

In fact, the original meaning of vicissitudes of life refers to the changes in sea and land.

1. What are other examples of changes in sea and land?

There are relics of ancient river beds on the seabed in eastern my country; there are forest plant fossils in the Taiwan Strait strata.

2. What are the forces that cause changes in the surface morphology?

Based on this phenomenon, what theory did the German scientist Wegener propose? What is the content of this doctrine?

He proposed the theory of continental drift and believed that 200 million to 300 million years ago, there was only one continent on the earth. Later, the continent disintegrated and split, and gradually drifted to its current position, forming the current distribution pattern of sea and land.

Reading and understanding

Think about it, what inspiration can we get from the story of Wegener and continental drift?

Go forward courageously

1. What are the six major plates that the plate tectonics theory divides globalization into?

2. What do ________ and ________ in Figure 3.14 mean? Concentrated where?

3. What else do you know?

1. The world’s volcanoes are mainly distributed in ( )

A Inside the Eurasian continent B On the islands in the Pacific Ocean

C plate junction D North American continent

2. The content of the plate tectonics theory is ( )

A The world is divided into seven major sectors B Each major sector is "stable internally and active at the same time"

C All major plates are stable D All major plates move in the same direction

3. Our country is a country with many earthquakes. The reason is ( )

A Our country is located at the junction of two major earthquake zones B The result of human labor damage

C my country’s terrain is complex and diverse D Caused by mining underground resources

4. The Australian continent belongs to ( )

A Pacific Plate B Antarctic Plate

C Indian Ocean Plate D Eurasian Plate

Homework after class:

1. Try the plate tectonics theory to explain the following phenomena:

(1) The Red Sea continues to expand;

(2) The Himalayas continue to rise;

(3) There are many earthquakes in Japan.

2. Draw a simplified diagram of the six major sections and fill in the section names.

After-class exploration:

Predict based on what you have learned: What will the world look like in the future?

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For more information about the PPT courseware "Changes of Land and Sea" PPT courseware, please click on the "Changes of Sea and Land ppt Land and Ocean ppt" tab.

"Changes of Sea and Land" PPT download:

"Changes of Sea and Land" PPT download Part 1: Content objectives of this section: Give examples to illustrate that the land and sea on the earth's surface are in constant movement and change. Know the theory of continental drift and be able to use this theory to solve some problems. Changes in the sea. Changes in the sea, which can be referred to as...

"Changes of Sea and Land" PPT courseware:

"Changes of Sea and Land" PPT Courseware Part One: Teaching Objectives 1. Use examples to illustrate the changes of sea and land, and establish the scientific viewpoint of dialectical materialism that the sea and land are constantly moving and changing. 2. Understand the basic concepts of continental drift and plate tectonics, and be able to explain the world's main...

"Changes of Sea and Land" PPT:

"Changes of Sea and Land" PPT Part One Content: Course Questions Ask the question: What was the land like hundreds of millions of years ago? Establishing a hypothesis: Continental drift theory 200-300 million years ago, there was only one continent on the earth. Later, this supercontinent split into several continents, and...

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