"Green Mountains Are Everlasting" PPT courseware download 2

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"Green Mountains Are Everlasting" PPT courseware download 2

How are deserts formed?

There are many large deserts in the world, such as the Sahara Desert in Africa, which covers an area of ​​more than 8 million square kilometers, which is larger than Australia. The area of ​​deserts in our country is equivalent to the total area of ​​arable land in our country.

Drought and wind are the two main causes of desert formation. The climate in desert areas is dry, rainfall is scarce, and there is a lack of vegetation cover on the ground. During the day, the light is strong and the temperature is very high, but at night the temperature drops sharply, often falling below zero. The rocks have been subjected to constant thermal expansion and contraction for a long time, so they are constantly peeling off like molting shells, and the weathered stones are further crushed into sand grains. When the rocks are weathered into sand, strong winds blow away the sand and pile it up into dunes, covering the entire ground. Almost all the great deserts in the world are formed in this way.

Human deforestation, destruction of grasslands, and loss of plant cover on the land surface are also an important reason for the formation of deserts.

Declaration of "Heart"

We are on the same planet and we all have a common home.

"Love the earth, love our home" is not an empty word, not a slogan, but a cry from the bottom of my heart.

Let us take a look at this blue planet that has, is, and will continue to support us! It is already devastated and cannot bear to be seen. How beautiful she was once! But we unfilial descendants ravaged her like this.

We come from nature and belong to nature, but we always think of one day overcoming nature.

Two years ago, I went to Ningbo. On the train that was speeding along, I looked far into the distance. Buildings were rising one after another, but sadly, I could not find even a clear river.

Keywords: New People’s Education Edition Chinese PPT courseware download for the sixth grade, Volume 1, sixth grade Chinese slide courseware download, Evergreen PPT courseware download, .PPT format

For more information about the PPT courseware "The Everlasting Green Mountain", please click the "The Everlasting Green Mountain" ppt tag.

"Green Mountains Are Everlasting" PPT courseware:

"Green Mountains Are Everlasting" PPT courseware Part One: Learning Objectives 1. Read the text emotionally and understand the content of the text. (Key Points) 2. Understand the profound sentences and feel the hardship and determination of the old farmers to transform the mountains and forests and green their homes. (Key point) In the previous lesson, Indian...

"Green Mountains Are Everlasting" PPT:

"Green Mountains Are Everlasting" PPT Part One: Introduction before class: How powerful is a person? If we only focus on temporary outbursts, not much can be done. However, if you give someone time and allow him to persevere, then the results are likely to be jaw-dropping. ..

"Green hills never grow old" PPT courseware 7:

"Green Mountains Are Everlasting" PPT Courseware 7 Teaching Objectives 1. Read and remember words such as management, destination, rippling, understanding, and staying together through thick and thin. 2. Read the text emotionally and understand the content. 3. Understand the profound sentences and feel the efforts of old farmers to transform mountains and forests and green their homes...

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Update Time: 2024-10-21

This template belongs to Chinese courseware People's Education Press Chinese Language for Sixth Grade Volume 1 industry PPT template

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