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प्रश्न
Describe the work of plants as agents of weathering.
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उत्तर
Plants protrude their roots through joints in the rocks and as the plant grows, the joints in the rocks get widened. The widening of joints allows water to seep through. Seepage of water may cause chemical weathering or frost action. Decay of plant remains like flowers, leaves, etc., result in the formation of organic acids which may react with minerals present in the rocks. The leads to chemical weathering.
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संबंधित प्रश्न
What is known as mass wasting?
Give one example of rapid mass movement.
Give a technical term for the following:
Disintegration or decomposition of rock.
Give a technical term for the following:
Expansion of minerals in rocks on coming into contact with rainwater.
On what factors does the weathering depend?
What do you understand by the following term:|
Exfoliation
What do you understand by the following term:|
Regolith
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 |
Describe how changes of temperature lead to weathering.
OR
How do changing temperature lead to weathering?
Give a geographical reason:
Human is an agent of weathering.
