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प्रश्न
Can animals and plants also influence weathering? Will that be physical or chemical weathering? Which type of weathering does stone quarrying cause?
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उत्तर
- Yes, burrowing animals widen the fissures in the rocks. Rocks become weak and disintegrate.
- The roots of the trees and other plants penetrate in the soil, they grow in size, exert pressure on rocks, widen cracks in the rocks and rocks break. Many microscopic organisms such as algae, lichens, bacteria, moss, etc produce chemicals and they break down the outer layer of the rock. These chemicals are responsible for the physical and chemical weathering of rocks.
- The stone quarrying causes the anthropogenic weathering.
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संबंधित प्रश्न
Identify the correct correlation:
A: Assertion; R: Reasoning
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R: Types of mass wasting movements are dependent on a region's climate.
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R: Gravity pulls all things down to the earth’s surface.
Identify the correct correlation:
A: Assertion; R: Reasoning
A: Surface water helps solifluction.
R: Water table is responsible for the same.
Draw a neat and labelled diagram of Freeze and thaw weathering
Draw a neat and labelled diagram of Biological weathering.
In which regions will freeze-thaw weathering not be effective?
Besides climatic factors, rock type, and structure, can you think of some more factors that affect weathering?
See the diagram and answer the following questions:
- Which rock layer has experienced the most weathering?
- Which rock layer has experienced the least weathering?
- What could be the reason behind the difference in weathering?
The satellite images are given in figure A and B belong to the same location but a different timeline. Study the images and answer the following questions.
Figure A
Figure B
- Compare the images and tell what differences do you find in these images.
- In 2019 what does the patch of land going from north-west to south-east signify? Why was it not there in the 2011 image?
- To what extent is the climate of the place responsible for this disaster?
- Which other factors are responsible for the disaster?
Think of the reason why landslides should be more frequent in the foothill zone of the Himalayas and Western Ghat region. Why do landslides not occur in Marathwada in Maharashtra or the Maidan area in Karnataka?
