"Exploring the Factors of Land Erosion" Earth's Surface and Its Changes PPT Courseware 2

Description

"Exploring the Factors of Land Erosion" Earth's Surface and Its Changes PPT Courseware 2

teaching objectives

Communicate research plans on factors affecting land erosion;

Experience research experiments on factors that influence land erosion;

Name and explain what types of land in nature are most susceptible to erosion and propose our recommendations for protecting land resources.

Communicate and discuss experimental plans

The impact of rainwater intensity on land erosion;

The effect of slope size on land erosion;

The impact of vegetation on land erosion.

What kind of land is prone to erosion?

1. Consolidate and master the writing method of comparative experiments and research plans.

2. Communicate, cooperate, reflect, and improve your own experimental plans (programs).

3. Use experimental results to detect natural conditions, floods and disasters, and preventive and control measures.

1. Communicate and discuss our plans (Part 1)

Our group’s research plan

Research topic: The impact of plant cover on land on erosion

Our speculation: If there is plant cover, the degree of land erosion will be small; if there is no plant cover, the degree of land erosion will be large.

Experimental method: Use a comparative experiment to set up an experimental group and a control group.

Equipment: plastic box (bucket), sand, gravel, vegetation, plastic film, small shovel, raindropper (beverage bottle with some holes in its lid).

Different conditions: the soil in the experimental group was covered with vegetation, and the soil in the control group was not covered with vegetation.

Same conditions: Keep other conditions the same, such as the slope (soil quality) of the soil slope remains unchanged, the amount of rainfall, etc. remains unchanged.

Experimental process: Use the same amount of rainfall (the same amount of water in the bottle, cover the same size hole, and "rain" at the same height and angle) to rain on the ground in the experimental group and the control group, and observe the erosion of the soil. (severe soil loss).

Conclusion: Land with vegetation erodes less than land without vegetation.

Experiments to explore erosion

Completed "Research Plan on Factors Affecting Erosion"

Complete "Experimental Records Related to the Degree of Land Erosion and Slope Factors"

Through research, we know that the degree of land erosion is related to factors such as ______, ______ and ______

think:

From this we can speculate, what kind of land is prone to erosion in nature?

What will erosion do to us?

What else should we do?

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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:

"Exploring Factors Caused by Land Erosion" The Earth's Surface and Its Changes PPT Part One Content: Communication and Discussion of Experimental Plans We have initially formulated a research plan on the degree of soil erosion by rainwater and what factors are related, and we will share our experimental plans with our classmates. I..

"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: 2024-09-25

This template belongs to science courseware Fifth Grade Science Volume 1, Textbook Edition industry PPT template

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