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What is Weathering? Video Lecture | Geography Class 11 - Humanities/Arts

71 videos|245 docs|44 tests

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Video Timeline
Video Timeline
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00:00 Introduction to Weathering
00:05 Mechanical Weathering
02:52 Chemical Weathering
04:23 Biological Weathering
06:10 Process of Erosion & Deposition
07:04 Summary
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FAQs on What is Weathering? Video Lecture - Geography Class 11 - Humanities/Arts

1. What is weathering?
Ans. Weathering refers to the process by which rocks, minerals, and other materials on the Earth's surface are broken down and altered by various physical, chemical, and biological processes.
2. What are the different types of weathering?
Ans. There are two main types of weathering: mechanical weathering and chemical weathering. Mechanical weathering involves the physical breakdown of rocks into smaller fragments, while chemical weathering involves the alteration of rocks through chemical reactions.
3. How does mechanical weathering occur?
Ans. Mechanical weathering occurs through several processes, such as frost wedging, thermal expansion and contraction, exfoliation, and abrasion. These processes cause rocks to break apart into smaller pieces without changing their chemical composition.
4. What are some examples of chemical weathering?
Ans. Examples of chemical weathering include dissolution, where minerals are dissolved in water; oxidation, where rocks and minerals react with oxygen; hydrolysis, where water reacts with minerals to form new substances; and carbonation, where carbon dioxide dissolves in water to create carbonic acid that reacts with minerals.
5. How does weathering affect landscapes?
Ans. Weathering plays a significant role in shaping landscapes. Mechanical weathering breaks down rocks into smaller fragments, which can be transported by erosion processes such as wind, water, or ice. Chemical weathering alters the composition of rocks, leading to the formation of new minerals and the weakening of rock structures. Over time, weathering processes contribute to the formation of valleys, canyons, caves, and other landforms.
71 videos|245 docs|44 tests
Video Timeline
Video Timeline
arrow
00:00 Introduction to Weathering
00:05 Mechanical Weathering
02:52 Chemical Weathering
04:23 Biological Weathering
06:10 Process of Erosion & Deposition
07:04 Summary
More
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