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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.
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.
People have used various farming methods to increase food production. However, in the process, they have stripped the soil of nutrients, leading to its degradation.
Can you suggest some ways by which we can reduce soil degradation?
Give geographical reason:
Temperature changes result in physical weathering.
In which regions of the world is ‘frost action’ the common form of weathering?
Which is the most important effect of weathering?
What is gradation? Describe the two processes involved in gradation.
Make a chart for your classroom showing the causes of different types of weathering.
How are erosional plains formed?
What is weathering?
What are exogenic forces?
Give one example of rapid mass movement.
What is known as Sheet Wash?
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.
Distinguish between:
Weathering and Denudation
Distinguish between :
Loess and Alluvium.
On what factors does the weathering depend?
What do you understand by the following term:|
Regolith
Rewrite the following sentence, choosing the right word from the options given below:
_______refers to the gradual disintegration and decomposition of rocks which lie exposed to the elements of weather.
What do you understand by the following term:
Soil profile
Account for the two types of weathering.
Give reasons for the following :
Farmers are encouraged to adopt soil conservation methods.
Explain the following terms.
Bases
Give a geographical reason:
Human is an agent of weathering.
Consider the given statement and choose the right option given below.
- The nature and magnitude of weathering differ from place to place and region to region.
- Granular disintegration takes place due to the action of volcanoes.
- Weathering is a prerequisite in the formation of soil.
Which of the above statement is/are the right statement.
Consider the given statement and choose the right option given below.
- Small streams that join the main river is tributary.
- River Gangas is a tributary.
Which of the above statement is/are the right statement.
