| Category | Format | Size |
|---|---|---|
| Fifth Grade Science Volume 1, Textbook Edition | pptx | 6 MB |
"Exploring the Factors of Land Erosion" Earth's surface and its changes PPT
Description
"Exploring the Factors of Land Erosion" Earth's surface and its changes PPT
The first part: communication and discussion of experimental plans
We have initially formulated a research plan on the degree of soil erosion caused by rainwater and what factors are related to it, and are sharing our experimental plans with classmates.
What else is unscientific and unreasonable about our experimental plan? Need modification?
What issues should we pay attention to during the experiment?
The effect of land slope on soil erosion
The impact of rainfall on soil erosion
Effects of plant cover size on soil erosion
Exploring the factors causing land erosion PPT, Part 2: Experiments to explore erosion
Conduct experiments according to the modified experimental plan to verify our speculations.
hint:
Do not touch the land model once the experiment has begun;
Be careful to use containers to catch “runoff”;
Carefully observe and record the phenomena in the experiment.
What phenomena did we see in the experiment, and what do these phenomena mean?
The impact of land slope on soil erosion:
Land with a large slope will cause more serious soil erosion than a land with a small slope.
The impact of rainfall on soil erosion:
Heavy rainfall will cause more serious soil erosion than light rainfall.
The influence of plant cover size on soil erosion:
Without plant coverage, soil erosion is more serious than with plant coverage.
Exploring the factors causing land erosion PPT, part three content: Classroom insights
What insights did you gain from studying this lesson?
Rain is an inevitable natural phenomenon, so the erosion of land by water flowing on the earth's surface is also inevitable. However, human activities can aggravate or reduce the degree of land erosion. If we plant trees and use land scientifically and rationally, the degree of land erosion will be reduced. If we cut down trees indiscriminately and overgraze livestock, the degree of land erosion will be aggravated.
Keywords: Free download of Chinese PPT courseware for the fifth grade in the textbook version, PPT download of exploring the factors of land erosion, PPT download of the earth's surface and its changes, .PPT format;
For more information about the PPT courseware "The Earth's Surface and Its Changes Exploring the Factors of Land Erosion", please click the Earth's Surface and Its Changes PPT Exploring the Factors of Land Erosion PPT tag.
"Exploring the Factors of Land Erosion" Earth's surface and its changes PPT download:
"Exploring the Factors of Land Erosion" The Earth's Surface and Its Changes PPT Download Part One Content: Exchange, discussion, and discussion of experimental plans. The impact of the slope of the land on erosion. The impact of plant coverage on erosion. The impact of rainfall on erosion.. . ... ...
"Exploring the Factors of Land Erosion" Earth's Surface and Its Changes PPT Courseware 2:
"Exploring Factors Affecting Land Erosion" Earth's Surface and Its Changes PPT Courseware 2 Teaching Objectives Exchange research plans on factors affecting land erosion; Experience research experiments on factors affecting land erosion; Name and explain what kind of land is in nature Most vulnerable to intrusion...
"Exploring the Factors of Land Erosion" Earth's Surface and Its Changes PPT Courseware:
"Exploring the Factors of Land Erosion" The Earth's Surface and Its Changes PPT Courseware 1. Exchange and discuss the experimental plan 1. Group communication and presentation of the experimental plan. 2. Evaluate, modify or improve the experimental plan (see Plans 1, 2, and 3 below). 3. Thinking: In the experiment we...
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Update Time: 2024-06-29
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