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!) MCQ Questions for Class 10 Social Science with Answers was Prepared Based on Latest Exam Pattern. Accelerated erosion and sedimentation can occur at times in 3. Occurs on steep slopes. Sheet erosion is erosion that occurs fairly evenly over an area, like a bed sheet sliding off a bed. Soil erosion is the wearing away of dirt and soil by water, wind, and human actions. (ii) Soil conservation: Preventing soil erosion by taking various measures such as plantation of trees, strip cropping and contour ploughing is known as soil conservation. The main difference between erosion and weathering lies in the position of rocks. What is gully erosion and sheet erosion? This reduces the actual area under cultivation and the yield of crops decline. Complete NCERT Book Page wise Solution Class 10th as per Latest CBSE Syllabus Geography Chapter-1 Resources and Development The following page provides you NCERT book solutions for Class 10 social science, social science Class 10 notes in pdf are also available in the related links between the texts. Small finger-like rills begin to appear on the landscape. Over a period of time, the fine rills increase in number and also become deeper and wider. Ploughing along the contour lines can decelerate the flow of water down the slopes. This can occur when heavy rain occurs, or the shallow surface begins to runoff from water flow. Sometimes water flows as a sheet over large areas down a slope. Sheet Erosion Sheet erosion is the movement of soil from raindrop splash and runoff water. ICSE Geography Previous year Question Paper 2017 Solved for Class 10. 31. It happens when water from rainfall does not soak into the soil, but runs across it instead. 4. Even though we haven’t mentioned glaciers yet, they are like giant rivers of ice that slowly move around. Sheet Erosion: Gully Erosion: 1. 2. The nutrients required by the plants are taken away by the wind. ( 5 marks question ) class 10 geography . Wind blows loose soil off flat or sloping land, and is called wind erosion. Pages 74. Rill erosion occurs when runoff water forms small channels as it concentrates down a slope. Harsh climatic conditions. During extreme climatic situations like drought, tsunami, and many other conditions, massive erosion occurs. Explain the two types of water erosion. It is the removal of soil particles by little raindrops. Answers to this Paper must be written on the paper provided separately. Class-10 » Social Science ... Sheet erosion. Soil erosion is the loss of top fertile layer of soil either by wind or by water. Q.52. The mechanisms involved in wind erosion depend on soil texture and the size of soil particles. Free PDF Download of CBSE Class 10 Social Science Geography Chapter 1 Resource and Development Multiple Choice Questions with Answers. Rill erosion is erosion that results in small, short-lived and well-defined streams. BOOK FREE CLASS; COMPETITIVE EXAMS. Report ; Posted by Juweriya Azahar an hour ago. 4. Sheet erosion refers to the uniform movement of a thin layer of soil across an expanse of land devoid of vegetative cover. Found in Western India. NCERT Books. b. Gully erosion: The running water cuts through the clayey soils and makes deep channels as gullies. 28. When the top layer of the soil is removed over a large area by running water, it is called sheet erosion. Chapter 10-1 of 33 Chapter 10 - Erosion and Sediment Control 10.1 Introduction Erosion and sedimentation are natural or geologic processes whereby soil materials are detached and transported from one location and deposited in another, primarily due to rainfall and runoff. Sheet erosion is widely observed in clusters 1 2 7 10 . Attempt seven questions in all. Sheet erosion occurs on gentle slopes. 2. 3. 22. Erosion involves the wearing away of rock and soil found along the river bed and banks. (ii) Erosion by wind: Wind erosion reduces the productive capacity of the soil by removing the loose particles of soil with the high velocity wind. 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. It leads to the washing away of the top soil. In splash erosion, the impact of a falling raindrop creates a small crater in the soil, ejecting soil particles. This will make it difficult for the rain water to the soil. Found in Chambal ravines. Which method is used to break up the force of wind? Once the unsteady flow calculations are made to get the runoff peak rate and duration, quasi–steady state flow is assumed at the peak rate and is partitioned into broad sheet flow for interrill erosion and concentrated flow for rill erosion. Class 10. 27. Occurs on even surface layer. MCQ Questions for Class 10 Geography: Ch 1 Resources and Development. Hill slopes are prone to sheet erosion and rill erosion. What is wind erosion ? The amount of hill slope erosion largely depends on how the land is used. Sheet erosion. Our weathering and erosion worksheets will help you forecast clear comprehension of these concepts. Rill Erosion: This is the second stage of sheet erosion. Rill erosion and sheet erosion are two types of soil erosion. Class 1 - 3; Class 4 - 5; Class 6 - 10; Class 11 - 12; CBSE. Erosion also involves the breaking down of the rock particles being carried downstream by the river. This process is called sheet erosion. (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. Erosion. How can we stop soil erosion? What is responsible for sheet erosion ? Sheet Erosion: Uniform removal of the top soil just like a sheet. : 60–61. Sheet erosion is the second stage of the erosion where a thin layer of the soil is removed. Heavy rains and sea storms make the erosion worse. Splash erosion is generally seen as the first and least severe stage in the soil erosion process, which is followed by sheet erosion, then rill erosion and finally gully erosion (the most severe of the four). In such cases the top soil is washed away. In the course of this period also, a fast-moving wind is usually experienced. CLASS 12. Dry soil particles of silt or clay size can be transported over great distance by wind. Sheet Erosion: When the top layer of the soil is removed over a large area by the running water is called as sheet erosion. School Harvard University; Course Title CLASS 12; Uploaded By Agree08. Sheet erosion occurs when a thin layer of topsoil is removed over a whole hillside paddock—and may not be readily noticed. The soil particles scattered by raindrops block the soil pores. Define the term soil erosion •what steps can be taken to control soil erosion. Nature is truly astounding. Erosion and weathering refer to processes in which the rocks are broken down into fine particles. What do you mean by the sustainable development ? Sheet erosion is harmful since it removes the finer and more fertile top soil. Sheet Erosion. 4. Raindrops detach soil particles, which go into solution as runoff occurs and are transported downstream to a point of deposition. CLASS. 29. Sheet erosion is widely observed in clusters 1 2 7 10 and 13 however only 20. You will not be allowed to write during the first 15 minutes. Erosion is so dramatic here because the cliffs along the coast are made from boulder clay, which is soft and crumbly rock. What steps can be taken to control soil erosion in hilly areas ? Deposition of the eroded soil occurs at the bottom of the slope (Figure 3) or in low areas. Sheet erosion will consequently occur after some time. Q.50. 6. Sometimes, water flows as a sheet over large areas down a slope. Sheet and rill erosion. 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. This results in the loss of the organic matter and nutrients since the top layer of the finest soil particles are lost. Class 10 Geography Chapter 1 Resource and Development Important Extra Questions updated for new academic session 2020-2021. Ans. Erosion by Glaciers. Soil erosion is also caused due to defective methods of farming. (45) cementation rock cycle* breccia* compaction* Steep sided valley are formed. This is known as sheet erosion. a. Wind blows loose soil off flat or sloping land. Other Forces. Rill erosion. Our Weathering and Erosion lesson plan introduces the difference between the two terms. Gully erosion. The overland flow hydrograph is developed by assuming broad, uniform sheet flow. This preview shows page 30 - 36 out of 74 pages. Therefore more and more trees should be planted along the edges of the field, the waste land and also on the steep slopes. Get wind of our weathering and erosion worksheets for students at all grade and language levels. Gullies cut up agricultural land and make it unfit for cultivation. Ploughing along the contour lines is known as contour ploughing. 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. The time given at the head of this Paper is the time allowed for writing the answers. What is contour ploughing ? In times of drought, for example, the vegetative cover of the soil withers away and the land is left uncovered. This is known as wind erosion. This time is to be spent in reading the question paper. In such cases the top soil is washed away. The top Soil is removed. Ans. Students can solve NCERT Class 10 Social Science Resource and Development Multiple Choice Questions with Answers to know their […] 5. CBSE > Class 10 > Social Science 2 answers; How did nationalism emerge in Europe? 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!) Very Short Answers:- 1.Define ‘resources’. BNAT; Classes. What is the main cause of land degradation in Madhya Pradesh? Rill erosion is a type of erosion that results in small, yet well defined streams. 8. (a) Splash or raindrop erosion: This is the first stage of the erosion caused by rainfall. 32. Report ; Posted by Shubham Sonu 21 hours ago. Q.51. 30. Explain different types of soil erosion . As they slowly move, they shape mountains and also carve out valleys. Sheet erosion is harmful since it removes the finer and more fertile top Soil. It typically occurs evenly over a uniform slope and goes unnoticed until most of the productive topsoil has been lost. Ans. 3. 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