Business Planet Edition 7th Grade Geography Volume 1
People's Education Edition Geography for Seventh Grade Volume 2
Business Planet Edition 7th Grade Geography Volume 2
Business Planet Edition Geography for Grade 8 Volume 1
People's Education Edition Geography for Eighth Grade Volume 2
Hunan Education Edition High School Geography Compulsory Course I
Shanghai Education Edition Seventh Grade Geography Volume 1
People's Education Edition Geography for Grade 8 Volume 1
Compulsory Course 1 of High School Geography in China Graphics Edition
People's Education Edition Geography for Grade 7 Volume 1
Shanghai Education Edition Geography for Sixth Graders Volume 1
Lu Ke version of high school geography compulsory course I
People's Education Press High School Geography Compulsory Course 1
Hunan Education Edition High School Geography Compulsory Course II
Business Planet Edition Geography for Eighth Grade Volume 2
Shanghai Education Edition Seventh Grade Geography Volume 2
Category | Format | Size |
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Shanghai Education Edition Seventh Grade Geography Volume 1 | pptx | 6 MB |
Description
"Yellow River" PPT
Part I: The origin of the Yellow River and the ocean it flows into
The Yellow River flows through 9 provinces and autonomous regions, with a total length of 5,464 kilometers. It is the second longest river in my country.
The division of the upper, middle and lower reaches of the Yellow River
Source: The river is not deep and the water flow is gentle and clear.
Below Longyang Gorge: the water is fast and turbulent
After entering the Ningxia Plain: the water flow is gentle
Midstream: The sediment content increases greatly and there are many tributaries
Downstream: the water flow is gentle, the river channel becomes wider, and sediment is deposited in the river bed, becoming an "above ground river"
Yellow River PPT, part 2: Management and development of the Yellow River
specific measure
Upstream: cascade development of water energy, construction of large-scale water conservancy project; planting trees and grass
Midstream: vigorously carry out soil and water conservation work—planting trees and grass, and building terraces.
Building reservoirs in the middle and upper reaches - the key to controlling the Yellow River
Downstream: Reinforce levees; strengthen reservoir construction and management, and enhance awareness of water conservation and water protection
Yellow River PPT, the third part of the content: the cold flood of the Yellow River:
⑴Two conditions for the formation of cold floods:
① Lower latitudes flow to higher latitudes.
②Frozen rivers in winter.
⑵ Distribution sections of the Yellow River during flood season:
The upper reaches are from Lanzhou to the vicinity of Dengkou in Inner Mongolia; the lower reaches are from Huayuankou in Zhengzhou to the estuary.
⑶Time of the Yellow River Flood:
① When it freezes in winter: Because high latitudes freeze first and low latitudes freeze later, floating ice flows toward high latitudes, forming ice dams and river water rising.
② When the ice melts in spring: high latitudes melt later and low latitudes melt first. Ice floes flow toward the latitudes, forming ice dams and river water rising.
Yellow River PPT, Part 4: Reasons for the flow interruption
Little natural water supply
Industrial and agricultural production and population’s daily life consume large amounts of water.
Yellow River runoff seeps down from loose soil
In recent years, due to atmospheric warming and strong ground evaporation, the Yellow River runoff has a long water path, and the amount of water loss gradually increases along the way.
Keywords: Shanghai Education Edition Geography PPT courseware for seventh graders, Volume 1, free download, Yellow River PPT download, .PPT format;
For more information about the "Yellow River" PPT courseware, please click the Yellow River ppt tab.
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File Info
Update Time: 2024-11-24
This template belongs to Geography courseware Shanghai Education Edition Seventh Grade Geography Volume 1 industry PPT template
"Yellow River" PPT Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
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