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Authoritative PPT Summary
"Observing the Tide" PPT Courseware 9
tide:
①The phenomenon that sea water rises and falls regularly due to the gravitational pull of the sun and moon.
②Rush and undulate like the tide.
③Wet
The formation of spring tide in Qiantang River
Qiantang River is the largest river in Zhejiang Province and flows into Hangzhou Bay. The reason why the spring tide of the Qiantang River is particularly magnificent is because of the special topography of the Qiantang River's outlet. The mouth of the sea is hundreds of kilometers wide. When it reaches Kanpu, it shrinks to twenty kilometers. When it reaches Yanguan Town, the river channel suddenly shrinks to about three kilometers. Therefore, it is wide on the outside and narrow on the inside, forming a trumpet shape. When the tide comes, a large amount of seawater is pushed into the river with a flow rate of ten meters per second. Due to the sudden narrowing of the river inside, a large amount of tidal water was caught between the two banks. In addition, the river bed in this area was also very different in height. As a result, the river water flowing eastward impacted the tidal water coming from east to west, and the waves in front overlapped each other, crowding each other. , accumulation, the river channel is the narrowest when entering Yanguan Town, forming the highest peak. As a result, a wall of white water several meters high was created, forming a world-famous wonder at home and abroad.
Self-study tip one:
Browse the text and see which two natural paragraphs specifically describe the spring tide of the Qiantang River, a rare and strange sight in the world.
Self-study tip two:
1. Read paragraphs 3 and 4 of the text silently, and think about the order in which they are written? Which words can you tell?
2. Which two characteristics of the tide did the author grasp in writing?
Self-study tip three:
Read paragraphs 3 and 4 of the text carefully and silently, find sentences describing the "sound" and "shape" of the tide from the text, imagine the spectacular scene of the tide approaching from far away while reading, and then compare your understanding and experience with the same table communication.
Self-study tip four:
Read paragraph 5 of the text silently and think:
What does it mean in an instant, the sky is rolling over the earth, the wind is roaring and the waves are roaring? What does it refer to in the text? What did you experience from it? What did you feel?
Poems describing the tide of Qiantang River
In August, the waves roared in, and their heads were several feet high, touching the mountains.
After a while, he entered the sea gate, rolling up piles of sand like snowdrifts.
(Liu Yuxi's "Langtaosha")
Poseidon passed by the evil wind from the east and returned, and the waves hit the stone wall of Tianmen and opened it.
How is it like this in August in Zhejiang? The waves are like snow coming from the mountains.
(Li Bai's "Hengjiang Ci")
The long flat sand leads to the rainbow, and the jade cup at Yaotai is empty.
The bottom of the Qingjiang River is shaking on a clear day, and it is floating in the rapid waves at night.
(Chen Shidao's "Tide Watching in Seventeen Days")
Thousands of miles of waves are rolling in, and snowflakes are flying towards the Diaoyutai.
The crowds of people praised the vast lineup, and the iron horses calmly killed the enemy.
(Mao Zedong's "Seven Wonders. Watching the Tide")
August 18th is a spectacular day like no other. (Su Shi)
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PPT courseware for the second lesson of "Observing the Tide":
"Observing the Tide" PPT courseware for the second lesson Part One: Self-study tips: 1. Read the text silently, imagine the picture while reading, and draw your favorite scene with a pen circle. 2. Group cooperative inquiry and learning. 3. Each group will proceed in the order of before the tide comes, when the tide comes, and after the tide.
PPT courseware for the first lesson of "Tide Observation":
PPT courseware for the first lesson of "Tide Observation" Part One: First reading of the text Please introduce or show the information you have collected about the Qiantang River tide. What does the Qiantang River tide look like in the author's eyes? Through the preview, please find one in the text that you think best...
"Observing the Tide" PPT for the second lesson:
"Tide Watching" PPT Part One of the Second Lesson: Introducing a New Lesson In the last lesson, we studied the first and second natural paragraphs of the text, and learned that Yanguan Town, Haining City is the best place to watch tides. It falls on the 18th day of the eighth lunar month. It’s a good day for tide watching. Then why since ancient times, the Qiantang River...