Fifth Grade Science Volume 1, Textbook Edition
Science Edition for Sixth Grade Science Volume 2
Third Grade Science Volume 2, Textbook Edition
Third Grade Science Volume 1, Textbook Edition
Science Edition for Sixth Grade Science Volume 1
Fourth Grade Science Volume 2, Textbook Edition
Fourth Grade Science Volume 1, Textbook Edition
Qingdao Edition Fourth Grade Science Volume 2
Hunan Education Edition Fourth Grade Science Volume 1
E-education edition fifth grade science volume 1
E-education edition fifth grade science volume 2
Qingdao Edition Fifth Grade Science Volume 2
Zhejiang Education Edition Seventh Grade Science Volume 2
Fifth Grade Science Volume 2, Textbook Edition
Fourth-grade science volume 2 of the E-education edition
Hunan Education Edition Fifth Grade Science Volume 2
!["Understanding Soil" PPT Courseware 2](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/7df58d26-0970-44cb-bcd4-49f41a577237.webp)
Category | Format | Size |
---|---|---|
Fourth-grade science volume 2 of the E-education edition | pptx | 6 MB |
Description
"Understanding Soil" PPT Courseware 2
Soil can be found everywhere in our daily life. Please talk about your understanding of soil based on your own life experience.
1. How is soil formed?
2. What are the common types of soil?
3. What’s in the soil
4. What are the functions of soil?
What information about soil
1. The formation of soil is the result of rock weathering (rocks change under the long-term combined action of atmosphere, water, animals and plants, this phenomenon is called weathering)
2. Common soils include sand, clay, and loam
3. There are some small organisms, animal and plant remains, water, and air in the soil.
4. The soil is suitable for the growth and reproduction of animals and plants, and can also be used for firing ceramics, etc.
experiment one:
1. Observe the soil carefully and pinch the soil with your hands. What do you find?
The soil is moist, with small pebbles, grass roots and small insects.
illustrate:
1. There is moisture in the soil.
2. The soil contains some small organisms
Experiment 2:
1. Put small clods of soil into water. What do you see? Explain what is in the soil?
2. Stir the soil and let it sit for a while. Observe the situation in the water cup after it has stood. What is in the water?
Precautions:
1. Earth clods should be handled with care.
2. Stir thoroughly.
3. The resting time should be long. The cup should also remain still while observing.
4. Always observe carefully and record what you see at every step. Read this and get started.
What are the sources and functions of humus in soil?
Source: roots, stems, leaves of plants, excreta of organisms and dead organisms.
Function: Provide food for soil animals, provide nutrients for plants, and enhance soil fertility.
The role of non-living matter in soil:
Air: source of oxygen for plant roots to breathe
Water: necessary for plant growth
Humus: Provides food for soil animals, nutrients for plants, and enhances soil fertility.
Let’s talk about it: How should we humans protect the soil on which all living things depend?
Protecting nature means protecting the environment that humans rely on for survival. Everyone must care about it and do their best.
Keywords: Understanding soil teaching courseware, download the science PPT courseware for the second volume of the fourth grade in the E-education edition, download the science slide courseware for the fourth grade, download the PPT courseware for understanding the soil, .PPT format;
For more information about the "Understanding Soil" PPT courseware, please click the "Understanding Soil ppt" tab.
"Understanding Soil" PPT Courseware 3:
"Understanding Soil" PPT Courseware 3 Experimental Phenomenon Clay soil can be rolled into strips. Experimental summary: The soil has poor cohesiveness, which means that the voids are large, so it is relatively loose, water can flow out easily, and the aeration performance is good but the fertilizer retention performance is poor. The soil is very sticky, which means there are small voids and water retention..
"Understanding Soil" PPT courseware:
"Understanding Soil" PPT courseware Learning objectives 1. Know what types of soil are there? 2. Do you know what the composition of soil is? 3. Do you know how to protect the soil? Experiment 1: Is there air in the soil? Experiment 2: Put a piece of soil into a test tube and burn it. What will happen? ..
File Info
Update Time: 2024-09-07
This template belongs to science courseware Fourth-grade science volume 2 of the E-education edition industry PPT template
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!["Understanding Soil" PPT Courseware 2](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/c04077fb-a8cf-422f-bd36-8d513e27adcb.webp)