What is contour ploughing ? Even though we haven’t mentioned glaciers yet, they are like giant rivers of ice that slowly move around. Soil erosion is also caused due to defective methods of farming. In times of drought, for example, the vegetative cover of the soil withers away and the land is left uncovered. As they slowly move, they shape mountains and also carve out valleys. Sheet Erosion. ICSE Geography Previous year Question Paper 2017 Solved for Class 10. The nutrients required by the plants are taken away by the wind. Wind blows loose soil off flat or sloping land. ( 5 marks question ) class 10 geography . 2. 28. Accelerated erosion and sedimentation can occur at times in CLASS. b. Gully erosion: The running water cuts through the clayey soils and makes deep channels as gullies. (iii) In situ soil: When soil is formed at its original position by the weathering of the parent rock, it is known as in situ soil like the black soil. Soil erosion is the loss of top fertile layer of soil either by wind or by water. Erosion and weathering refer to processes in which the rocks are broken down into fine particles. With the help of photos and diagrams, these worksheets unpack these concepts and enable students to understand how erosion and different types of weathering affect our planet. 2 See answers Arvansingh9814 Arvansingh9814 Answer: sheet erosin : it is the result of excessive flowing of water resulting in the removal of the topmost layer of soil. Explain different types of soil erosion . (a) Splash or raindrop erosion: This is the first stage of the erosion caused by rainfall. This results in the loss of the organic matter and nutrients since the top layer of the finest soil particles are lost. Define the term soil erosion •what steps can be taken to control soil erosion. It is the removal of soil particles by little raindrops. Occurs on even surface layer. Class-10 » Social Science ... Sheet erosion. The mechanisms involved in wind erosion depend on soil texture and the size of soil particles. Sheet erosion occurs on gentle slopes. This can occur when heavy rain occurs, or the shallow surface begins to runoff from water flow. Answers to this Paper must be written on the paper provided separately. Steep sided valley are formed. During extreme climatic situations like drought, tsunami, and many other conditions, massive erosion occurs. Nature is truly astounding. When the top layer of the soil is removed over a large area by running water, it is called sheet erosion. 5. This is known as sheet erosion. Ans. 22. What do you mean by the sustainable development ? (45) cementation rock cycle* breccia* compaction* Deposition of the eroded soil occurs at the bottom of the slope (Figure 3) or in low areas. 6. This preview shows page 30 - 36 out of 74 pages. Report ; Posted by Juweriya Azahar an hour ago. This lesson provides ample opportunity to leverage concept imagery and sensory stimulation with the use of videos and images from websites, as well as in-class hands-on experiments that demonstrate the effects of weathering and erosion over a long period of time. Sheet erosion is erosion that occurs fairly evenly over an area, like a bed sheet sliding off a bed. Q.50. a. 31. Raindrops detach soil particles, which go into solution as runoff occurs and are transported downstream to a point of deposition. 3. MCQ Questions for Class 10 Geography: Ch 1 Resources and Development. Our Weathering and Erosion lesson plan introduces the difference between the two terms. Over a period of time, the fine rills increase in number and also become deeper and wider. Q.52. Sheet erosion occurs when a thin layer of topsoil is removed over a whole hillside paddock—and may not be readily noticed. In such cases the top soil is washed away. Students can solve NCERT Class 10 Social Science Resource and Development Multiple Choice Questions with Answers to know their […] 32. CBSE > Class 10 > Social Science 2 answers; How did nationalism emerge in Europe? 8. Pages 74. Harsh climatic conditions. It happens when water from rainfall does not soak into the soil, but runs across it instead. Class 10. Erosion is so dramatic here because the cliffs along the coast are made from boulder clay, which is soft and crumbly rock. In such cases the top soil is washed away. The soil particles scattered by raindrops block the soil pores. Dry soil particles of silt or clay size can be transported over great distance by wind. Rill Erosion: This is the second stage of sheet erosion. 4. The amount of hill slope erosion largely depends on how the land is used. Erosion involves the wearing away of rock and soil found along the river bed and banks. CLASS 12. Hill slopes are prone to sheet erosion and rill erosion. Get wind of our weathering and erosion worksheets for students at all grade and language levels. How can we stop soil erosion? Erosion also involves the breaking down of the rock particles being carried downstream by the river. Ans. It typically occurs evenly over a uniform slope and goes unnoticed until most of the productive topsoil has been lost. Sheet erosion. Gully erosion. 29. Wind blows loose soil off flat or sloping land, and is called wind erosion. 30. Rill erosion is a type of erosion that results in small, yet well defined streams. Notes on Sedimentary Rocks, Weathering and Erosion- Chapter 10, 12 Name _____ Date_____Class_____ Vocabulary List (Number, write and define these words on another sheet of paper, those that have a * please illustrate, be creative!) What is gully erosion and sheet erosion? Rill erosion occurs when runoff water forms small channels as it concentrates down a slope. Found in Chambal ravines. 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