Question

Please give me notes of science soil with explanation for class 7​ ch soil​

Answer 1

Important topics covered in NCERT Solutions for Class 7 Science Chapter 9 Soil

• Soil teeming with life
• Soil profile
• Soil types
• Properties of soil
• Moisture in soil
• Absorption of water by soil
• Soil and crops

Frequently Asked Questions on Soil

How is soil formed?

Soil is formed due to the weathering of rocks. Weathering is a process in which physical breakdown and chemical decomposition of minerals takes place primarily by wind, water and climatic changes. In the weathering process, rocks are converted to small pieces, which eventually turn to soil particles to form a layer of soil.

How is clayey soil useful for crops?

Clayey soil is useful for crops for the following reasons

• It has excellent water holding capacity
• Clayey soil is rich in organic matter
• Clayey and loamy soils are suitable for growing cereals like wheat.
• Water holding-capacity of clayey soil supports the growth of crops like paddy which require more water to grow

How can soil pollution be prevented?

Soil pollution can be controlled by the following measures:

• By reducing the use of plastics, we can reduce soil pollution.
• By controlling the use of chemical fertilisers and pesticides, we can control soil pollution.

How can soil erosion be prevented?

Soil erosion can be controlled by taking the following steps

• Planting more and more trees will result in the reduction of soil erosion.
• By stopping deforestation and avoiding overgrazing of animals.

you can practice the question and answer given in your book.

you can read the chapter and also you can read the chapyer from reference.it is the best option.

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