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Question
Account for the two types of weathering.
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Solution
Weathering may be :
- Mechanical : weathering is the disintegration of rocks by mechanical forces, without chemical changes.
- Chemical : weathering is the gradual decomposition of the rock owing to the reaction and combination of the constituent minerals of the rock with oxygen or carbon dioxide present in the atmosphere. In Chemical weathering the presence of water is essential.
RELATED QUESTIONS
Distinguish between the following pair:
Weathering and erosion
Give geographical reason:
Temperature changes result in physical weathering.
Give geographical reason:
Gases in the atmosphere affect weathering.
Make a chart for your classroom showing the causes of different types of weathering.
Give a technical term for the following:
Expansion of minerals in rocks on coming into contact with rainwater.
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.
Distinguish between the following :
Erosion and Weathering.
Explain the following terms.
Colloids
On the basis of the given points, differentiate between weathering and erosion.
| Weathering | Erosion | |
| Definition | ||
| Causes/Agents | ||
| Effect/Results | ||
| Examples |
