"The Future of the Universe" PPT

Description

"The Future of the Universe" PPT

Part One: Learning Objectives

Knowledge and Competency Objectives:

1. Understand some knowledge about cosmology.

2. Understand some characteristics of speech drafts.

Process and method objectives:

1. Learn to hold popular science lectures to improve the scientific nature and standardization of the lectures.

2. Improve your comparative reading ability by comparing with the previous texts in this unit.

Emotions, Attitudes and Values ​​Goals:

1. Through the study of this article, stimulate students' enthusiasm for exploring the mysteries of the universe.

2. Guide students to experience the humorous language style of this speech and improve their thinking and language expression skills.

Learn important and difficult points

1. Learn to hold popular science lectures to improve the scientific nature and standardization of the lectures.

2. Improve your comparative reading ability by comparing with the previous texts in this unit.

The future of the universe PPT, part 2: About the author

Stephen Hawking is the most outstanding physicist since Albert Einstein. Hawking was born in Oxford, England, in 1942. He studied at Oxford University and Cambridge University, studying mathematics, physics and cosmology. Hawking's 1988 cosmology book "A Brief History of Time: From the Big Bang to Black Holes" is a landmark best-seller. It has been more than thirty years since Hawking was diagnosed with the disease, but he is still diligently studying the theory of the origin of the universe and is still working hard for a grand unified theory. Hawking is currently Lucasian Professor of Mathematics at the University of Cambridge, a position that Sir Isaac Newton once held.

The future of the universe PPT, the third part: topic introduction

In Chinese, "Yu" means "up and down, four directions" and represents space; "zhou" means "throughout the ages" and represents time. This article is a transcript of a lecture given by Hawking at Cambridge University in January 1991. The topic of this talk is the future of the universe, or rather, what scientists think the future will look like.

writing background

After the publication of "A Brief History of Time" (1988), the atmosphere in Cambridge's Department of Applied Mathematics and Theoretical Physics changed subtly. Reporters from newspapers and magazines around the world continued to request to visit Hawking. In the next two years, the TV station worked The building is occupied from time to time by people who want to make a documentary about the life of the world's most famous scientist. The same story is told repeatedly in different languages ​​in different countries: how Hawking overcame his physical disability with his bravery and became a giant of science and a hero of the news media. Wave after wave of journalists visited Hawking's cluttered Silver Street office and spent emotional moments with the public's latest hero.

The future of the universe PPT, part 4: overall perception

This article is divided into five parts:

Part One (1-6): It is very difficult to predict the future, but under certain conditions it is possible to predict the future of the universe.

Part 2 (7-13): It talks about predicting the future of the universe on a very large scale; because on a very large scale, the universe is simple.

Part 3 (14-22): Talk about the universe is expanding now and may continue to expand or may stop expanding and start to shrink. The key is the average density of the universe.

Part 4 (23-25): We still don’t have a clear understanding of the average density of the universe. We only know that the average density of our current universe is very close to the expansion, contraction and critical density.

Part 5 (26): Conclusion: The universe may continue to expand in the future or it may stop expanding and start contracting.

The future of the universe PPT, part 5: text explanation

1. Briefly state in one sentence what this article is about.

This article talks about the future of the universe and predicts two outcomes: expansion or contraction.

2. Why does the author say in paragraph 8 that “even if we know the relevant laws that govern the universe, we still cannot use them to predict the distant future”? Why does the author say in paragraph 10 that “even though we know the equations that govern human behavior, we still cannot use them to predict the distant future.” Actually we can’t predict it”?

“Because solutions to physical equations exhibit a property called chaos”, “the equations may be unstable”; similarly, “the equations that govern the brain almost certainly have chaotic behavior, with very small changes in the initial state leading to very Different results”.

3. Why does science “cannot predict the future of human society” but “can predict the distant future of the universe”?

Because the former is chaotic and uncertain; and "the behavior of the universe is simple rather than chaotic on a very large scale, so we can predict the distant future of the universe."

The Future of the Universe PPT, Part Six: Class Summary

This article increases people's understanding of the home of the universe, but the density of matter in the universe determines the magnitude of gravity. If the density of matter exceeds a critical value, a qualitative change will occur. According to Big Bang cosmology, there are only two fates for the future of the universe: continue to expand or collapse. Current observations indicate that the universe "will not stop expanding for at least 10 billion years." However, since there is a lot of dark matter in the universe, there may be some reasons that we do not yet fully understand. Will it collapse in the distant future? Still an unsolved mystery.

The future of the universe PPT, part 7: College entrance examination link

1. (2008, Guangdong Volume) Among the following words, the red word has a different pronunciation in each pair: ( )

A. Moisturize/contain, support/admire, debug/harmony

B. Confrontation/Hobby Complete/Handsome Compulsive/Stubborn

C. Achievements/escape embankment/promote smear/rag

D. Lakeside/decoration/hub/block/border fortress

2. (2007, National Volume 2) Among the following sentences, the one in which the red word must be deleted is ( )

A. Industry insiders believe that the decline in the average home purchase area by consumers is, on the one hand, a manifestation of the role of policies, and on the other hand, it also shows that home buyers are becoming more rational.

B. For Japan, which has a population of 128 million, this sales volume is equivalent to one in every 10 Japanese purchasing this high-calorie food.

C. Recently, the Anhui Provincial Institute of Archeology and the Suzhou Municipal Cultural Relics Management Office will jointly conduct a rescue archaeological excavation of a section of the Sui and Tang Grand Canal ruins in Suzhou city.

D. Among the 55 economies evaluated by the International School of Management in Lausanne, Switzerland, the competitiveness of mainland China improved by 3 places on the basis of the previous year, rising to 15th.

The Future of the Universe PPT, Part 8: Classroom Exercises

1. Which of the following words’ phonetic explanation is correct ( )

A. Chaos (hún dùn): In Chinese legend, it refers to the blurry scene before the formation of the universe.

Embarrassed (gān gà): (look, attitude) unnatural.

B. Cross-examination (jié wèn): rhetorical question

Yi Zhong (yǐ zhòng): rely on, value.

C. Samadhi (sān wěi): refers to being focused and not distracted.

Pizza (pí shā): an Italian pie.

D. Run out (gào xìng): refers to the exhaustion of energy.

Black hole (hēi dòng): a special celestial body.

2. The group of the following words without typos is ( )

A. Unique and original, it catches the eye and is full of admiration, like smoke and mist.

B. Clearly discerning, broad and easy, ever-changing

C. Looking after parents. In the final analysis, crystal clear and ambiguous.

D. Innovate with the old, bring forth the new, be sparse and clear, adapt to the local situation, be notorious

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"The Future of the Universe" PPT courseware download:

"The Future of the Universe" PPT courseware download part one content: New lesson introduction Stephen Hawking was born in Oxford, England on January 8, 1942. This is a special day. Galileo, the founder of modern science, died on the same day 300 years ago. sky. Hawking at Oxford...

"The Future of the Universe" PPT teaching courseware:

"The Future of the Universe" PPT teaching courseware Part One: Target Positioning 1 Understand the background knowledge and key points of the article; understand the meaning of the keywords in the article. 2 Summarize the content of the article, refine the key points, and enhance the ability to analyze, summarize, and judge; understand and master the...

"The Future of the Universe" PPT download:

"The Future of the Universe" PPT Download Part One Content: About the Author ⊙Praise: The legendary scientist in a wheelchair and the most outstanding physicist after Einstein The scientific giant of gravitational physics ⊙Life: 1942, Oxford, Oxford University and Cambridge University ⊙ Symptoms..

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Update Time: 2024-10-08

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