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प्रश्न
It is weathering that is responsible for bio-diversity on the earth. How?
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उत्तर
Weathering processes lead to breaking down the rocks into smaller fragments and preparing the way for formation of not only regolith and soils, but also erosion and mass movements. Bio-diversity is basically a result of forests and vegetation. Forests and vegetation depend upon the depth of weathering mantles. Erosion cannot be significant if the rocks are not weathered. It implies that weathering aids mass wasting, erosion and reduction of relief and changes in landforms are a consequence of erosion.
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संबंधित प्रश्न
Write whether the statement are true or false. Correct the incorrect one.
The breaking down of rocks into smaller particles is called weathering.
Complete the flowchart below.
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.
Distinguish between the following pair
Granular disintegration and exfoliation
Give geographical reason:
Gases in the atmosphere affect weathering.
Give geographical reason:
Human activities affect weathering.
List any three factors that affect weathering.
Make a chart for your classroom showing the causes of different types of weathering.
How are erosional plains formed?
Name any two slow movements of mass wasting.
Give a technical term for the following:
Peeling off of the outer layer of rock through contraction and expansion.
Say whether the following is ‘True’ or ‘False’.
In dry climates mechanical weathering is dominant.
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.
On what factors does the weathering depend?
Rewrite the following sentence, choosing the right word from the options given below:
_______soils are those which are undisturbed by erosion or deposition.
What are the various factors governing the formation of soil? Which one is the most important and why?
Distinguish between the following :
Erosion and Weathering.
What do you understand by the following term:
Soil texture
Describe how changes of temperature lead to weathering.
OR
How do changing temperature lead to weathering?
Describe the work of plants as agents of weathering.
State the effects of weathering.
Give a geographical reason:
Slope is a major factor in mass wasting.
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?
Are physical and chemical weathering processes independent of each other? If not, why? Explain with examples.
