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प्रश्न
Describe how changes of temperature lead to weathering.
OR
How do changing temperature lead to weathering?
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उत्तर
The alternate action of heat and cold helps in the weathering of rocks. For example, during the day, the rocks expand by heat and they contract due to cold during the night. It tends to loosen the particles of rock and it begins to disintegrate because every rock is composed of different minerals, which are affected differently due to changes in temperature, and therefore the component parts of the rock begin to lose cohesion.
संबंधित प्रश्न
What are exogenic forces?
Say whether the following is ‘True’ or ‘False’.
In dry climates mechanical weathering is dominant.
What is weathering?
What do you understand by the following term:|
Carbonation
What do you understand by the following term:|
Desilication
What are the various factors governing the formation of soil? Which one is the most important and why?
Match the following pairs correctly:
| 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 |
| (c) It is most fertile soil when renewed every year | Podzol |
| (d) This soil is found is cool or cold humid areas | Residual |
Give a geographical reason:
Oxidation changes the size and colour of the rocks.
Is weathering essential as a pre-requisite in the formation of soils? Why?
Are physical and chemical weathering processes independent of each other? If not, why? Explain with examples.
