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Question
Is weathering essential as a pre-requisite in the formation of soils? Why?
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Solution
Yes, weathering is an essential pre-requisite in the formation of soils. Weathering is action of elements of weather and climate over earth materials. There are a number of processes within weathering which act either individually or together to affect the earth materials in order to reduce them to fragmental state. Weathering is mechanical disintegration and chemical decomposition of rocks through the actions of various elements of weather and climate.
Weathering is an important process in the formation of soils. When rocks undergo weathering, rocks start to break up and take form of soil gradually.
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RELATED QUESTIONS
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.
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Weathering and erosion
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Gases in the atmosphere affect weathering.
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Disintegration or decomposition of rock.
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Expansion of minerals in rocks on coming into contact with rainwater.
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On what factors does the weathering depend?
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Sheet erosion and gully erosion.
What do you understand by the following term:|
Humus
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Soil texture
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| A | B |
| (a) A soil formed at a place or a particular site | Alluvium |
| (b) Over a long period of time this soil become mature | Transported soil |
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Farmers are encouraged to adopt soil conservation methods.
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Oxidation changes the size and colour of the rocks.
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Which one of the following materials is affected by hydration process?
