Answer: Fertilizers and mixed farming. Answer: A rich soil in plant food is the chief requirement of a successful agriculture. 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.
Examination and Description of Soil 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. Population shifting and migration. Question 22: What is sheet erosion? They become reasonably fertile when fertilizers are added to it. (vi) With the use of manures, coffee, rubber, cashew, etc., can be grown on these Soils. It supports all forests, grasslands and crops from which all living creatures on earth derive their food. Name the four major Soil types found in India, leaving out desert and mountain Soils. Causes of deforestation.
The effects of soil erosion go beyond the loss of fertile land. Answer: (i) laterite (ii) alluvial (iii) black, Question 2: Give a single word for each of the following: 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. (iii) The productivity of the Red Soil increases with regular use of fertilizers. Answer: Alluvial Soil is very fertile since alluvium is rich in mineral nutrients like potash and lime. The effects of soil erosion go beyond the loss of fertile land.
to Control Stream Bank Erosion It is finer and finest in the lowest section. Soil explained and soil erosion explanation. Question 30: State any two methods of controlling soil erosion. Question 1: Name the factors responsible for the formation of Soil. Answer: (i) It is Black in colour therefore it is called Black Soil. If the initial impact of rain droplets dislodges soil, the phenomenon is called rainsplash erosion. Answer: Sometimes it has high content of sodium salts which makes it unproductive. Soil erosion is lowest in the U.S. and Europe (∼ 10 metric tons ha −1 yr −1 soil lost) and much more severe in the rest of the world (∼ 30 – 40 metric tons ha −1 yr −1 soil lost) where resources and incentives for implementing conservation measures … Answer: Question 2: Draw a diagram showing the different Soil Horizons. (iv) In the upper layers, the compounds of iron and aluminium become higher giving a reddish colour to the Soil.
Oswaal Karnataka SSLC Sample Question Papers Class 10 Social ... Answer: When rain falls heavily, the run off scours out deep grooves. (ii) Cotton, Sugarcane, Groundnut, Jowar and Bajra. It results in a continuous loss of topsoil, ecological degradation, soil collapse, etc. Answer: (i) Terrace farming. (ii) Name the type of Soil found on the summit of the Eastern Ghats. Answer: The two important agents of erosion are: Phenomena such as erosion, loss of organic carbon, increased salt content, compacting, acidification and chemical pollution are the major causes of current soil degradation. Question 2: How we define Soil from agricultural point of view? Answer: Pedology is the subject deals with the study of soil. 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Question 19: Mention the types of Soil erosion by water. ... To prevent soil pollution, its causes must be controlled. Answer: The Alluvial Soil of the Ganga plain is formed due to the deposition of alluvium which is brought from the Himalayan region. Answer: The Soil affected by Soil erosion is Laterite Soil. Reduce the use of plastics: ... Prevention of soil erosion: Removal of the upper fertile layer of the soil (top soil) by strong wind and flowing water is known as soil erosion. Question 3: Name the transported Soil most widely found in India. Found inside – Page 773In arid regions there are less trees and when the wind blow soil erosion occur. (d) (i) Man's activities like construction work, ploughing and cutting down of trees causes soil erosion. (ii) By deepening of the river bed, river does not ...
Your Mobile number and Email id will not be published. Wind. [18], In July 2020, marine biologists reported that aerobic microorganisms (mainly), in "quasi-suspended animation", were found in organically-poor sediments, up to 101.5 million years old, 250 feet below the seafloor in the South Pacific Gyre (SPG) ("the deadest spot in the ocean"), and could be the longest-living life forms ever found. Answer: Question 7: Sheet erosion and Gully erosion. 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. Found inside – Page 15The assertion is about soil erosion. The top soil is washed away subsequently which is known as soil erosion. But the reason states that the process of soil formation and erosion goes on simultaneously. This is true but it is not the ... Running water: erosion, transportation, and deposition. Question 18: What is the meaning of ‘Soil Erosion’? Answer: Humus: The decaying of organic materials, e.g., dead leaves, stems, roots, living bacteria, fungi, worms etc., produce humus, which is important for Soil fertility. The rock materials carried by erosion is the load of the river. 10. Sediment motion can create self-organized structures such as ripples, dunes, or antidunes on the river or stream bed. 10. Erosion is the next chapter’s topic. Answer: The conditions of climate, topography, vegetation and underlying rock can alter the characteristics of Soil. It is a medium for trees and plant growth and a habitat for many insects and other organisms. Answer: Question 3: What are the main components of Soil? Reddish in colour as it contains Iron Oxide. 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 ... Any depression in a marine environment where sediments accumulate over time is known as a sediment trap. For example, on the Madagascar high central plateau, which constitutes approximately ten percent of that country's land area, most of the land area is devegetated, and gullies have eroded into the underlying soil to form distinctive gulleys called lavakas. Plants have extensive root systems that can help "grab on" to soil and keep the soil clumped together. Soil erosion is a continuous process that occurs either slowly or at an alarming rate. Black Soil is highly retentive of moisture, and become sticky when wet. Agroforestry and permaculture soil intro. Answer: Laterite soils are acidic in nature and has low water retaining capacity.
Answer: Red Soil is formed by weathering of crystalline and metamorphic rocks. Answer: Causes of Soil erosion are: Answer: Alluvial Soil; Older alluvium—Bhangar, Newer alluvium—Khadar. Soil water storage capacity is particularly important for the biotic component (plants, microbes, fauna) of soil ecosystems. Question 9: Where are Alluvial Soils found in India? Erosion and soil loss can lead to environmental problems. Many of the physical and chemical properties of the soil depend on how fine (clayey) or coarse (sandy) a soil is. Mismanaged utilization of soil resources like the removal of forest cover causes soil erosion heavily. Question 21: Mention causes of Soil erosion. where Gullies cut up agricultural land and make it unfit for cultivation. (iii) Chalk: It consists of calcium carbonate which provides the important element calcium. {\displaystyle \psi _{l}}
ICSE 10 Years Solved Papers Class 10 for 2021 Examinations: ... This layer of soil consists of organic matter and decomposed substances. Question 8: How is Black Soil formed? Click ‘Start Quiz’ to begin! When the ground surface is stripped of vegetation and then seared of all living organisms, the upper soils are vulnerable to both wind and water erosion. When strong winds blow, the topsoil along with the organic matter is carried away by the wind. Question 10: Laterite soil is not suitable for cultivation. Answer: Alluvial Soil and Black Soil are the most important Soils.
Question 13: How is Red Soil formed? If overland flow is directly responsible for sediment entrainment but does not form gullies, it is called "sheet erosion". Running water is one of the main cause of soil erosion. sand). (ii) They are rich in iron content, hence, they are red in colour. State two reasons for the low productivity of Red Soil or .
Can Plants Stop Soil Erosion They are called Immature Soils. This soil is agriculturally very important because it is a mixture of sand, clay and silt (loamy) which makes it very fertile. Soil pollution refers to anything that causes contamination of soil and degrades the soil quality. accelerated rate of soil erosion, ... At present 56% o f Class-I cities and 87% . The crop that thrives best in Red Soil is Sugarcane. Found inside – Page P-2(ii) Several candidates wrote vague reasons for why Central Maharashtra gets less rainfall than the coastal area of Maharashtra. (iii) Most of the candidates were able ... (3) (ii) Mention two causes of soil erosion in India. Ans. OR 4. (i) The loose rock material, together with humus, forming the uppermost layer of the earth’s crust and serving a source of food and moisture for plants. Answer: When wet, the Soil becomes sticky and difficult to work with. Composition of sediment can be measured in terms of: This leads to an ambiguity in which clay can be used as both a size-range and a composition (see clay minerals). This type of erosion is also termed as Stream Bank Erosion.
How to Conserve Soil Laterite Soil is found in India in hill summits ot Eastern and Western Ghats and Assam Hills. Question 5: Why Black Soil needs to be tilled after the first rains?
Oswaal ICSE Question Bank Class 10 (Set of 6 Books) English ... 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. The main causes of deforestation are: 1- Overpopulation (a) Alluvial Soil, (b) Red Soil, (c) Desert Soil and (d) Hill Soil or Mountain Soil. They are also found in the southern districts of Uttar Pradesh, Madhya Pradesh and eastern Rajasthan. 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. Complex mathematical formulas have been devised for its precise measurement, but these are difficult to apply, and most geologists estimate roundness from comparison charts. Answer: Red Soil is red in colour because it contains a great proportion of iron-oxides. Causes of Soil Erosion here.
Oswaal Karnataka SSLC Question Bank Class 10 (Set of 4 ... - Page 226 Definition of Soil Pollution. Question 8: For each, state one method of controlling the erosion caused. NCERT Solutions for Class 10 Science.
How to Conserve Soil Question 12: (i) Which minerals are found in Regur Soil? Soil erosion is the process of soil degradation. (b) It retains moisture and becomes exceedingly sticky. Some types of soils consist of two layers only. Soil erosion can be a slow process that continues relatively unnoticed or can occur at an alarming rate, causing serious loss of topsoil. It is different from the erosion of the bed of a watercourse, that is referred to as scouring. Question 18: Mention the types of Soil erosion.
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