"End of Chapter Review and Evaluation" Earth in the Universe PPT

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"End of Chapter Review and Evaluation" Earth in the Universe PPT

1. From the textbook - a systematic inventory of knowledge in this chapter

2. Go to life - analysis and application of hot issues

Hot Topics (1) Human understanding of the universe

[Broaden your horizons]

"On the Movement of Celestial Bodies" points out that the sun is a star, and the earth and other planets move in circles around the sun. After this theory was generally accepted, people realized that the earth is just an ordinary planet and is by no means the center of the universe. This naturally proves that life phenomena and civilization phenomena are not unique to the earth, but are common in the universe. We should not be arrogant. Human curiosity and desire for knowledge are one of the important motivations for exploring extraterrestrial civilizations. Exploring extraterrestrial civilization is the inevitable result and important component of mankind's continuous expansion of its horizons and deeper insight into nature. And it also has potential significance that cannot be underestimated in creating a better future for mankind. Future social problems, population problems, energy problems, war and peace problems, especially nuclear war problems, etc. Exploring extraterrestrial civilizations will help mankind gain a deeper understanding of its place in the universe.

[Open your mind]

1. Why is the earth said to be an ordinary planet?

Tip: The structural characteristics and motion characteristics of the Earth indicate that the Earth is an ordinary planet.

2. Why are life phenomena and civilization phenomena not unique to the earth?

Tip: The earth is just an ordinary planet, not the center of the universe. Then, under similar evolutionary conditions, intelligent life may exist somewhere in the universe.

Hot Spot (2) Exploring Extraterrestrial Civilizations

[Broaden your horizons]

On April 8, 1960, American Frank Drake pointed a 25 m-diameter radio astronomy telescope at two nearby planets in space - εEridani and τCeti. Receive and analyze all possible radio waves from space. On November 16, 1974, the United States used a radio telescope aimed at the Hercules globular star cluster to actively send mankind's first set of signals into outer space, indicating the presence of mankind in the solar system.

Launch a probe to visit aliens. The Pioneers 10 and 11 and Voyager 1 and 2 launched by the United States, after completing their exploration missions in the solar system, carried a lot of human information and roamed the interstellar space as human messengers. .

In 2016, the world-famous Proxima Centauri b appeared, which theoretically allows the existence of liquid water. The star has been selected by the Starshot program, where spacecraft equipped with cameras and color filters will photograph and analyze whether the planet is tinged with green and blue - signifying signs of life and oceans, respectively - or is covered in brown — implying that it contains nothing but rocks.

[Open your mind]

1. How to identify Earth-like planets when exploring extraterrestrial civilizations?

Tips: The distance from the star is moderate, there is stable illumination, and the volume and mass are moderate.

2. Why should we look for Earth-like planets when exploring extraterrestrial civilizations?

Tip: There is a suitable temperature, an atmosphere suitable for living things to breathe, and liquid water.

Keywords: Hunan Education Edition High School Geography Compulsory Course 1 PPT courseware free download, end-of-chapter review and assessment PPT download, Earth in the Universe PPT download, .PPT format;

For more information about the "End of Chapter Review and Assessment of the Earth in the Universe" PPT courseware, please click the "End of Chapter Review and Assessment of the Earth in the Universe" PPT courseware.

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Update Time: 2024-09-09

This template belongs to Geography courseware Hunan Education Edition High School Geography Compulsory Course I industry PPT template

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