"What's in the Universe" PPT

Description

"What's in the Universe" PPT

Part One Content: Text Introduction

Students, where do we live?

In fact, have you ever thought about it, we live on a beautiful earth and also live in a mysterious universe. Because the earth is just a drop in the ocean in the infinite celestial space of the universe.

What do you know about the universe? What does the universe in your imagination look like? Tell me.

The students’ wonderful speeches told the teacher that there are many astronomy enthusiasts in our class. Then look at this set of pictures that the teacher demonstrated. Can you tell what they are in the universe? Raise your hand to answer.

What are the characteristics of these substances in the universe? Let's study the science essay "What's in the Universe" together.

What is there in the universe PPT, part 2: overall perception

This is an expository essay. Expository essays are different from narrative essays that “use emotions” and argumentative essays that “convince people with reason.” Expository essays “teach people with knowledge.” Read the full text quickly and think about it: What does the author tell us about the universe? What characteristics of the universe have you learned? Read quickly while making notes on key points.

Hierarchy

Part 1 (paragraphs 1 to 11):

It introduces what is in the universe and explains that the universe is material.

The first level (paragraph 1): Get straight to the point, call the reader in a friendly tone, and introduce the object of explanation. “Infinity” is an important characteristic of the universe;

The second level (paragraphs 2 to 6): introduces the basic situation of stars. First, let’s talk about the common characteristics of stars’ luminescence and heat, and then highlight the main characteristics of stars that are very hot. Next, in paragraphs 3 to 5, the author introduces the volume, density, temperature, gravity and other knowledge of the three types of stars respectively. The author's summary in paragraph 6 once again emphasizes the common characteristics of stars: glowing, hot, and burning;

The third level (paragraphs 7 to 9): Introducing other aspects of stars. First, let’s talk about the celestial bodies attached to the stars - planets; then explain that the distance between stars is extremely far, and then explain that the position of stars in the universe is just a drop of water in the ocean;

Level 4 (Paragraph 10): Introducing the nebulae in the universe. Talk about the number, composition, location, thickness and classification of nebulae, etc.;

Level 5 (paragraph 11): Summary of the first part. Emphasize that the universe is material.

Part 2 (paragraphs 12 to 20):

Introduce the movement of galaxies and the universe. The universe is moving and endless.

The first level (paragraphs 12 to 14): introduces the Milky Way where the sun is located;

The second level (paragraphs 15-17): Introduction to star systems outside the Milky Way;

The third level (paragraphs 18-19): Explain that the universe is in motion;

Level 4 (Paragraph 20): Summarize this section. Emphasize that the universe is endless and its movement is also endless.

What PPT is there in the universe? The third part: figuring out the order.

The content of this article is novel and rich. The author explains the three basic characteristics of the universe: "matter", "motion" and "endless". But the teacher has a question. The universe is very strange to us, and the author’s introduction to it is also complicated. But in what order does the author introduce the universe, so that we can feel that the universe is no longer out of reach? And, what about the absolutely unknown?

You can think about it from the following two aspects:

Where does the author first place the starting point for introducing the universe? Where did humans start when exploring the universe?

1. Spatial order: from near to far. (Stars, nebulae - the Milky Way - a star system in Andromeda, etc.)

2. Logical sequence: from known to unknown. (For example, from the stars that people can see with the naked eye, to planets and nebulae; from the familiar Milky Way to extragalactic galaxies; from the billions of star systems that have been discovered to other star systems, etc.)

Benefits: It facilitates people to understand unfamiliar things from familiar things, so as to achieve the purpose of clearly understanding the universe.

What is there in the universe PPT, part 4: understanding methods

Invite students to read the last part of the article together.

Many students had confident smiles on their faces when reading this part. It can be seen that this science sketch also implies the author's rich emotions about the universe. The teacher would like to ask the students, in the process of introducing the universe in this text, is there any content that left a deep impression on you and made you feel some kind of wonder? And what means did the author use to arouse your rich emotional experience? Ask to draw relevant content and summarize your inner feelings. Tablemates interact with each other.

1. "Looking out from the Earth, the Milky Way is like a ring, surrounding the Earth. This is a beautiful ring. When half of it is below the horizon and the other half is across the sky, people say that it is a ring. The Milky Way separates the passionate Weaver Girl from the Cowherd." This passage uses metaphors to vividly illustrate the shape and changes of the Milky Way, highlighting the beauty of the universe.

2. "It is so far away from us, and it takes light 2.2 million years to travel from it to the earth. In every star system, it takes tens of thousands or even hundreds of thousands of years for light to travel from one end to the other." Don’t forget that light is the fastest messenger in the universe. If it were a spaceship, it would take millions of years to travel.” This passage uses the method of listing numbers and making comparisons to illustrate the size of the star system and highlight the vastness of the universe. Big, the vastness of the universe.

3. "No one can stand up on such a star, because its gravity is so strong that the human skeleton has long been crushed by its own weight." This passage uses a comparative explanation method to emphasize that certain stars The density is high, the weight is high, and the gravity is amazing. Highlight the wonders of the universe.

In addition, the author also uses illustrative methods such as classification and examples.

What PPT is there in the universe? Part 5: Taste the language

In the sentiment of the content just now, we can feel the author's enthusiastic praise of "the bigness of the universe", "the beauty of the universe" and "the wonder of the universe". However, the teacher has an idea to change some of the content of this science sketch to see if I can write it better than the author? Ask your classmates to comment.

(1) Original sentence: There are also some stars that are very small, and some are smaller than the earth.

Change the sentence: There are also some stars that are very small, smaller than the earth. (Inaccurate)

(2) Original sentence: Most of the stars we can see are stars. They appear to be cold, but in fact each star is a fiery sun.

Change the sentence: The stars we see. It's a star. They appear to be cold, but each star is actually a sun.

(Neither accurate nor vivid)

What is there in the universe PPT, part 6: Class summary

The universe is deep and vast, full of magical charm. Behind the twinkling stars, there are endless secrets. Thanks to popular science writer Zheng Wenguang for unveiling a corner of the mystery of the universe to us. However, human beings’ understanding of the universe is minimal compared to the vast universe. We believe that human beings will not stop exploring. We look forward to more astronomical work. Thanks to the efforts of researchers, the secrets of the universe are no longer mysterious.

after class homework

Collect the major progress in China's space exploration in recent years, select a knowledge point that interests you, follow a certain order of explanation, and use accurate and vivid language to introduce the things or organize the characteristics. No less than 200 words.

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Update Time: 2024-11-15

This template belongs to Chinese courseware Jiangsu Education Edition Seventh Grade Chinese Language Volume 1 industry PPT template

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