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प्रश्न
What is gradation? Describe the two processes involved in gradation.
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उत्तर
Gradation is the process of levelling the land by means of moving agents like rivers, or wearing away and lowlands are raised by adding the eroded material by the process of deposition. This is because there is constant earth movement which raises mountains and winds, seas and waves. The highlands are made low by erosion and this process is called degradation and materials are deposited elsewhere in depressions like valleys, lakes, etc. and these lowlands are raised by the process called aggradation.
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संबंधित प्रश्न
Match the column
| Column A | Column B |
| 1. Granular disintegration | (i) causes feldspar to become a powdery mass |
| 2. Oxidation | (ii) is common in deserts |
| 3. Carbonation | (iii) is the simplest form of chemical weathering |
| 4. Hydration | (iv) mainly affects limestone regions |
| 5. Solution | (v) results in the rusting of iron |
Give geographical reason:
Gases in the atmosphere affect weathering.
Give geographical reason:
Human activities affect weathering.
What is weathering?
Give one example of rapid mass movement.
Give a technical term for the following:
Disintegration or decomposition of rock.
What do you understand by the following term:|
Humus
Describe how changes of temperature lead to weathering.
OR
How do changing temperature lead to weathering?
Give reasons for the following :
Grassland soils are less acidic than forest soils.
Name three types of weathering.
