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प्रश्न
Which one of the following materials is affected by hydration process?
विकल्प
Granite
Clay
Quartz
Salts
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उत्तर
Salts
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संबंधित प्रश्न
From encyclopedias and the Internet, find out the different types of soil found in India. Discuss the importance of these soils for crops cultivated in our country. You should form groups in class for this activity.
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.
List any three factors that affect weathering.
What is gradation? Describe the two processes involved in gradation.
What are exogenic forces?
What is the chief characteristic of weathering in tropical climates?
Give a technical term for the following:
Disintegration or decomposition of rock.
Give a technical term for the following:
Expansion of minerals in rocks on coming into contact with rainwater.
Say whether the following is ‘True’ or ‘False’.
Shear plane is the surface on which movement of a landslide takes place as a result of its breaking off.
Say whether the following is ‘True’ or ‘False’.
External forces are engaged only in erosion
State and explain the classification of mass movements.
What is weathering? Illustrate the process graphically.
Distinguish between:
Weathering and Denudation
What do you understand by the following term:|
Oxidation
What do you understand by the following term:|
Carbonation
Rewrite the following sentence, choosing the right word from the options given below:
_______is produced by the decayed organic material, including dead leaves, stems roots, living bacteria, fungi, worms, and other organisms.
Define the following term briefly:
Soil texture
What are the various factors governing the formation of soil? Which one is the most important and why?
Account for the two types of weathering.
Give reasons for the following :
Climate is the most important factor of soil formation.
Explain the following terms.
Colloids
Give a geographical reason:
Temperature is the main factor behind granular weathering.
Give a geographical reason:
Oxidation changes the size and colour of the rocks.
Give a geographical reason:
Effect of mass movement will be greater along the western slope of the Sahyadri's than the eastern slope.
A region is having an annual mean temperature of 5°C and an annual rainfall of 1000 mm. Can you comment upon the weathering and the type with the help of the following questions? Discuss in class.
- Which type of weathering will be dominant here?
- Where will such a region be found?
On the basis of the given points, differentiate between weathering and erosion.
| Weathering | Erosion | |
| Definition | ||
| Causes/Agents | ||
| Effect/Results | ||
| Examples |
Are physical and chemical weathering processes independent of each other? If not, why? Explain with examples.
