"The Sun and the Moon" PPT

Description

"The Sun and the Moon" PPT

Part One: Learning Objectives

1. Understand the size and temperature of the sun, and understand solar activities and characteristics.

2. Know the impact of solar activity on humans.

Sun and Moon PPT, the second part of the content: self -study guidance

Self-study guide one

Read book P127 quickly and solve the following questions:

1. What is the celestial body of the sun?

What is the size and temperature? What is the distance to the earth?

How does the mass and volume compare to the Earth?

2. Consider the “Thoughts and Discussion” on page 127

Self-study guide 2

Read P128-P129 of the book quickly and solve the following questions:

1. How are the sun’s atmosphere divided?

2. What are the solar activities? What are the characteristics? At what level does it happen?

3. What is the activity cycle of sunspots?

4. What impact does solar activity have on the earth?

5. How to use an astronomical telescope?

Sun and Moon PPT, the third part content: the impact of solar activity on the earth

1) When solar activity increases, it can affect short-wave communications on the earth, disrupt the magnetic field, make the compass unable to guide, and cause a "magnetic explosion" phenomenon.

2) When sunspot and flare activity increases, excessive ultraviolet rays can damage the skin and induce skin cancer.

3) Indirectly affect various disasters on the earth, such as floods and droughts.

Note: Never use binoculars or an astronomical telescope without a filter to observe the sun directly, otherwise it will cause permanent damage to your eyes! ! !

Keywords: Zhejiang Education Edition seventh grade science PPT courseware for the second volume free download, Sun and Moon PPT download, .PPT format;

For more information about the "Sun and Moon" PPT courseware, please click on the "Sun and Moon PPT" tab.

"Sun and Moon" ppt download:

"Sun and Moon" PPT Download Part One Content: Introduction to the Moon The diameter of the moon is about 3476 kilometers, which is about 1/4 of the diameter of the earth. The volume of the moon is about 1/49 of the earth. It is about 1/400 of the diameter of the sun. The mass of the moon is about 1/81 of the Earth. Why is the Moon larger than the Sun?

"The Sun and the Moon" PPT courseware:

"The Sun and the Moon" PPT courseware first part of the content: some data about the sun 1. The diameter of the sun is about _______ kilometers 2, the surface temperature is about _____c 3, the central temperature is as high as ______c 4. The average distance of the daily land is _____ _Mur meters 5. The quality of the sun occupies ..

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Update Time: 2024-11-22

This template belongs to science courseware Zhejiang Education Edition Seventh Grade Science Volume 2 industry PPT template

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