what are the causes of soil erosion class 10

[13] Many of these regions are near rivers and drainages. Once these sediments are separated from the rocks, erosion is the process that moves the sediments. Rice, wheat, sugarcane, cotton and pulses can be cultivated when well watered with fertiliser. It is dark in colour. It contains pebbles and gravels. It is mainly found in the Malwa Plateau region. Watershed development near coral reefs is a primary cause of sediment-related coral stress. Answer: Red Soil is formed by weathering of crystalline and metamorphic rocks. Name an area where this Soil is found. Question 31: What is soil conservation? Soil erosion, thus, may be termed as the detachment and transportation of Soil particles by agents of denudation such as weathering, running water and wind, etc. Found inside – Page 48Name the soil which is formed due to high temperature and heavy rainfall with alternating Q.14. Which of the following causes soil erosion in India? Option (A): Deforestation wet and dry periods. Option (B): Afforestation Option (A): ... Cheating is Always Wrong, Punctuation Marks | All About Punctuation in English, Meaning and Rules, Indian States and Capitals | List of Total 29 States, Union Territories and Capitals of India, Report Writing Format, Template, Topics and Examples | Newspaper and Magazine Report Writing, Letter To Editor (LTE) | Reasons, Samples, and Format of Writing A Letter to the Editor. This balance is sometimes disturbed, leading to soil erosion. It is mainly derived from the weathering of rocks. Found inside – Page 13(TBQ) Ans. The two advantages of civilized forests are that they can check soil erosion and conserve the rainfall of the ... of excessively heavy rain results in a large run-off of surplus water which is the main cause of soil erosion. (iii) Rainfall—Heavy or Light. ... NCERT Solutions for Class 10 Maths. (ii) Why is it necessary? For this purpose, the live stakes, branches, rocks etc. This load acts as a grinding tool helping in cutting the bottom and sides of the river bed, resulting in deepening and widening of the river channel. Found inside – Page 62Defective Farming Methods: Soil erosion is also caused by defective methods of farming. For example; ploughing in a wrong way i.e., up and down the slope form channels for the quick flow of water and it leads to soil erosion. [10] Some areas have as many as 150 lavakas/square kilometer,[11] and lavakas may account for 84% of all sediments carried off by rivers. It is the uniform removal of soil in thin layers from the land surface caused by the wind. Answer: (i) Silica: The main constituent of sand, it is present as small crystalline grains. Jhooming. It is found in Maharashtra and M.P. Therefore, Alluvial Soils are rightly called Riverine Soils. Water can move most sizes of sediments, depending on the strength of the force. Answer: Laterite Soil is not suitable for agriculture because of its high content of acidity and it cannot retain moisture also. This activity shows that the wind blows the soil on a barren land and may cause soil erosion. Question 9: Name the parent rock of Laterite Soil. {\displaystyle D_{I}} Stronger flows will increase the lift and drag on the particle, causing it to rise, while larger or denser particles will be more likely to fall through the flow. These are most commonly evaluated on quartz grains, because these retain their surface markings for long periods of time. Question 1: How is Soil formed? Soil Erosion is one form of soil degradation. Soil texture is a permanent feature unless soils are subjected to rapid erosion, deposition, or removal. (ii) Overgrazing by cattle. Answer: Soil erosion is prominent in the North-eastern hilly region of Arunachal Pradesh, Assam, the Chambal Valley, West Bengal and Thar Desert. Four important features of Regur Soil are: 2.03.5.2 Soil Erosion and Hydrological Models. Question 20: State the factors upon which the rate of Soil erosion depends. Answer: (i) Laterites are intensively leached Soils of the monsoon climate. The sediment can consist of terrigenous material, which originates on land, but may be deposited in either terrestrial, marine, or lacustrine (lake) environments, or of sediments (often biological) originating in the body of water. Found inside – Page 94(i) Give one difference between Sheet Erosion and Wind Erosion. [ICSE, 2008] (ii) Man is largely responsible for soil erosion. Give reason. Ans. (i) Sheet Erosion Wind Erosion Uniform removal of soil in thin layers as a sheet over the ... These Soils support pastures and scrub forests. Question 1: State two differences between Black soil and Alluvial soil. They become reasonably fertile when fertilizers are added to it. Finally, surface texture describes small-scale features such as scratches, pits, or ridges on the surface of the grain. Select the correct answer and click on the “Finish” buttonCheck your score and answers at the end of the quiz, Visit BYJU’S for all Physics related queries and study materials, Your Mobile number and Email id will not be published. Soil Degradation. Answer: Red Soil is found in Tamil Nadu, Karnataka, South-eastern Maharashtra, parts of Andhra Pradesh and Orissa. This soil is agriculturally very important because it is a mixture of sand, clay and silt (loamy) which makes it very fertile. Answer: When wet, the Soil becomes sticky and difficult to work with. are used. during heavy, raips. Found inside – Page xii(Any Four) 4 × 1⁄2 = 2 Detailed Answer: The causes of soil erosion are: (a) Deforestation : The roots of trees hold the soil together, thus preventing the soil from getting uprooted. Cutting down of trees on a massive scale for building ... Answer: The conditions of climate, topography, vegetation and underlying rock can alter the characteristics of Soil. Or Found inside – Page 5It also causes soil erosion. It also causes lowering of groundwater level. Air pollution is also caused by wood, agricultural burnings, kitchens, railways, mining, wheat flour mills, thermal plants, aircraft, volcanoes and solar flares. Answer: Alluvial soils are formed by the sediments brought by the rivers. The various factors of soil erosion are: 1. Answer: (i) Laterite Soils are leached Soils because alternating dry and wet spells cause the soluble silica to be removed. (iii) The productivity of the Red Soil increases with regular use of fertilizers. These bedforms are often preserved in sedimentary rocks and can be used to estimate the direction and magnitude of the flow that deposited the sediment. Causes of Soil Erosion. Question 20: How does erosion by wind take place? Soil degradation is a worldwide problem, and it is understood as “a change in the soil health status resulting in a diminished capacity of the ecosystem to provide goods and services for its beneficiaries. They have a mixture of clay and sand. Effects on the sources of water. Answer: Alluvium Soils include: sand). Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. Soil composition modifiers are used for some soils that have andic properties or formed in volcanic materials, soils that have a high content of gypsum, some organic soil materials, and mineral soil materials with a … It is found in massive beds, and is characterized by calcareous clays. Sediment size is measured on a log base 2 scale, called the "Phi" scale, which classifies particles by size from "colloid" to "boulder". (ii) It retains moisture for a long time, is rich in lime, potash and calcium. Found inside – Page 62Defective Farming Methods: Soil erosion is also caused by defective methods of farming. For example; ploughing in a wrong way i.e., up and down the slope form channels for the quick flow of water and it leads to soil erosion. Answer: Question 2: Draw a diagram showing the different Soil Horizons. Question 10: Which Soil is found suitable to grow coffee in Karnataka? Found inside – Page 99Soils Red soil and yellow soil Black soil Alluvial soil Arid soil Laterite soil E. D. C. B. A. Forest soil F. States Maharashtra, Saurashtra, Madhya Pradesh Jammu & Kashmir, Himachal Pradesh, ... What are the causes of soil erosion? Found inside – Page 965Own less than 10 acres Rarely manures and sells their manure to class 1 and 2 Rarely terraced farms Infertile farms ... Causes and indicators of Soil Fertility Decline Sub-location Causes Indicators Kavuthu Soil erosion Low crop yields ... It is light grey and less fertile. Found inside – Page 187Soil erosion in the state of Punjab is due to which one of the following reasons? (a) excessive cultivation (b) overirrigation (c) Deforestation (d) overgrazing 10. In which one of the following states is the terrace cultivation ... Found inside – Page 73(i) In arid and semi-arid regions, soil can be conserved by planting shelter belts. ... ICSE 2018] Ans. The prevention of soil loss from erosion is known as soil conservation. (ii) Mention two causes of soil erosion ... Found inside – Page 226Soil erosion refers to the ______ of top soil by natural agents. ... Protection of soil from erosion and preservation of fertility of the soil is called. ... What are the causes of soil erosion and how can we conserve it? The form is the overall shape of the particle, with common descriptions being spherical, platy, or rodlike. Chopping down trees damage the flow of water and leads to floods in certain areas. Soil erosion reduces cropland productivity and contributes to the pollution of adjacent watercourses, wetlands and lakes. Answer: (i) Use of fertilizer. It results in a continuous loss of topsoil, ecological degradation, soil collapse, etc. accelerated rate of soil erosion, ... At present 56% o f Class-I cities and 87% . Roots of the trees protect the soil by holding it in place against wind and water erosion. Causes of Landslide. Answer: Red Soil is formed due to the prolonged weathering of the old crystalline rocks. (iv) Stream Bank erosion. Answer: (i) laterite (ii) alluvial (iii) black, Question 2: Give a single word for each of the following: In addition to erosion, soil quality is affected by other aspects of agriculture. The relative proportions determine the textural class. Causes of Soil Erosion. (iii) The proportion of lime and silica is reduced when leaching takes place. The Topsoil or Horizon A or the Humus Layer. Learn more about the causes of Erosion, soil compaction, low organic matter & â¦ Found inside – Page B-1310. Mention the causes of soil erosion. 11. What do you mean by sustainable development? 12. Write the definition of 'reserved' resources. 13. Write a short note on soil distribution in India. Very Short Answer Type Questions 1. Surface texture varies from polished to frosted, and can reveal the history of transport of the grain; for example, frosted grains are particularly characteristic of aeolian sediments, transported by wind. If the upwards velocity is higher than the settling velocity, the sediment will be transported high in the flow as wash load.[9]. Answer: Leaching Soil is the process by which soluble substances such as organic basic minerals and mineral salts are washed out of the upper layer of a Soil into a lower layer by percolating rain water, e.g., Laterite Soil. Answer: Alluvial Soil and Black Soil are the most important Soils. Answer: Question 1: On the map of India, shade and name an area each of: We lose out on fertile soil. Soil pollution refers to anything that causes contamination of soil and degrades the soil quality. Download Formulae Handbook For ICSE Class 9 and 10. Answer: It is Black in colour due to high percentage of iron content. (v) They are suited for dry farming as it does not require much moisture. Figure 12 Soil Profile. Soil erosion by water is considered one of the major causes of land degradation and a large number of investigations have been carried out aiming at developing and testing methods for the evaluation of soil erosion processes using GIS. Found inside – Page 867The nutritional values of foods can be Natural causes of soil erosion are : increased. Salt tolerance in plants also increases. 1. Wind : When strong winds blow, the topsoil 5. Biotechnological methods are sustainable methods which aims ... The deltaic alluvium on the eastern coast has also been deposited by river-channels. Deposition can occur due to dam emplacement that causes the river to pool and deposit its entire load, or due to base level rise. 4. Question 29: How does the nature of the Soil affect Soil erosion? It is exported from Chennai. Moderate (class 3) and high (class 4) soil erosion values are predicted for about 4.2% and 5.1% of the study area, respectively. L Answer: (i) Indiscriminate cutting down of forests. ... NCERT Solutions for Class 10 Maths. Soil also plays a key role in filtering water and absorbing carbon. Answer: Black Soil is also known as ‘Regur Soil’ or ‘Black Cotton Soil’. The different soil erosion types are explained below. Causes of Landslide. This can be localized, and simply due to small obstacles; examples are scour holes behind boulders, where flow accelerates, and deposition on the inside of meander bends. What are their local names and which one of them is superior to the other. Question 14: How is the Red Soil formed? The layers or Horizons of soil. Once these sediments are separated from the rocks, erosion is the process that moves the sediments. Found inside – Page 226Soil erosion refers to the ______ of top soil by natural agents. ... Protection of soil from erosion and preservation of fertility of the soil is called. ... What are the causes of soil erosion and how can we conserve it? Population shifting and migration. Plants have extensive root systems that can help "grab on" to soil and keep the soil clumped together. Answer: Sometimes in dry areas, dust and silt may be lifted and carried to a great distance by the wind. Or Question 30: State any two methods of controlling soil erosion. (iv) Red Soils are porous in nature but not retentive to moisture. Found inside – Page 33(3) Soil erosion is also caused due to defective farming methods. (4) Ploughing incorrectly can also form channels for the quick flow of water leading to soil erosion. Important State Examples of India's of villages Environment of ... This type of erosion is also termed as Stream Bank Erosion. Answer: Soil is formed by the Parent rock material through a process of break up or wear and tear. How can they be corrected? Plants have extensive root systems that can â¦ These are formed in the areas ... To prevent soil pollution, its causes must be controlled. The Topsoil or Horizon A or the Humus Layer. Erosion Types Answer: (i) Red Soils are formed in situ by weathering of the ancient crystalline and metamorphic rocks. Question 15: Where is Laterite Soil found? These relationships are shown in the following table for the Rouse number, which is a ratio of sediment settling velocity (fall velocity) to upwards velocity. Erosion Types Answer: Soil erosion is prominent in the North-eastern hilly region of Arunachal Pradesh, Assam, the Chambal Valley, West Bengal and Thar Desert. Any depression in a marine environment where sediments accumulate over time is known as a sediment trap. The soil mainly consists of four layers. (iii) Chalk: It consists of calcium carbonate which provides the important element calcium.

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