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Authoritative PPT Summary
"Who Ushers in the Dawn First" The Movement of the Earth PPT Courseware 4
learning target
1. Understand relative motion through life experience and experiential activities, and use it to explain the apparent motion of celestial bodies such as the sun.
2. Derive the direction of the earth's rotation based on the direction of apparent motion of celestial bodies.
3. Cultivate the spirit of group cooperation during activities.
Key points: Understand that the phenomenon of celestial bodies rising in the east and setting in the west is caused by the rotation of the earth from west to east.
Difficulty: Understanding relative motion.
think about it
When the car moves forward, how does the scenery outside the car window move?
What about the scene inside the car window?
When you sit on a swivel chair and let the swivel chair move counterclockwise, how do the surrounding scenery move?
When the swivel chair moves clockwise, how does the surrounding scenery move?
Lenovo
If the earth is regarded as a "big swivel chair", we will see the sun and other celestial bodies rising in the east and setting in the west, so how does the swivel chair turn? Please read textbook page P80
Self-study tips
1.How many time zones can the earth be divided into?
2. How long is the difference between two adjacent time zones?
3. How many hours is the difference between the sunrise times in Beijing and Urumqi? What about Beijing and Paris?
think
If we want to call a friend who lives in the United States, is it appropriate to call at noon? Why?
The World Cup in South Africa will open at 20:00 on June 11, Beijing time. Do you know why we emphasize "Beijing time"?
Extracurricular homework:
Observe the positions of Polaris and the Big Dipper.
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"Who Ushers in the Dawn First" The Movement of the Earth PPT:
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"Who Ushers in the Dawn First" The Movement of the Earth PPT Courseware 5:
"Who Ushers in the Dawn First" The Movement of the Earth PPT Courseware 5 Simulation Experiment Steps: 1. A group of students pull back to back to form a circle to simulate the earth. 2. Let Beijing and Urumqi be in the dark night. According to the locations of Beijing and Urumqi marked on the globe...
"Who Ushers in the Dawn First" The Movement of the Earth PPT Courseware 3:
"Who will usher in the dawn first" PPT courseware 3 on the movement of the earth. Speculation: If you want to see the surrounding scenery rotate clockwise while riding on a swivel chair, in which direction should the swivel chair rotate? Observe the world time zone map: Beijing will usher in the dawn earlier than Urumqi When is dawn? Our country is currently...