10th social Science Geography unit-3 Notes
10th social Science Geography unit-3 Notes
10th social Science digital Guide | Alex Maths
10th social Science History Chapter-5 - Social and Religious Reform Movements in the 19Th Century Book solutions Question and answer. You can Download PDF Class 10th Social Science notes,Guide for tamil medium and English medium. Tamil nadu samacheer Kalvi New syllabus 2020-2021 | Alex Maths
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10GEOGRAPHY UNIT -3 COMPONENTS OF AGRICULTUREGEOGRAPHYBOOK EXERCISE Choose the Correct AnswerI
1. The soil which is rich in iron oxides is _________.
a) Alluvial
b) Black
c) Red
d) Alkaline
Answer: c) Red
2. Which of the following organization has divided the Indian soils into 8 major groups?
a) Indian Council of Agricultural Research
b) Indian Meteorological Department
c) Indian Institute of Soil Science
d) Soil Survey of India
Answer: a) Indian Council of Agricultural Research
3. The soils formed by the rivers are __________.
a) Red soils
c) Desert soil
b) Black soils
d) Alluvial soils
Answer: d) Alluvial soil
a) Hirakud dam
b) Bhakra Nangal dam
c) Nagarjuna Sagar dam
d) Mettur dam
Answer: b)BhakraNangaldam
5. __________ is a cash crop.
a) Cotton
b) Wheat
c) Rice
d) Maize
Answer: a) Cotton
6. Black soils are also called as __________.
a) Arid soils
c) Regur soils
b) Saline soils
d) Mountain soils
Answer: c) Regur soils
7. The longest dam in the world is __________.
a) Mettur dam
c) Hirakud dam
b) Kosi dam
d) Bhakra-Nangal dam
Answer: c) Hirakud dam
a) Punjab
c) Uttar Pradesh
b) Maharashtra
d) West Bengal
Answer: d) West Bengal
9. Which crop is called as ‘Golden Fibre’ in India?
a) Cotton
b) Wheat
c) Jute
d) Tobacco
Answer: c) Jute
10. The state which leads in the production of coffee is __________.
a) West Bengal
b) Karnataka
c)Odisha
d) Punjab
Answer: b) Karnataka
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Consider the given statement and choose the correct option from the given below ones
Reason (R) :India ranks first in the world in the project, banana, and citrus fruits.
a) Both (A) and (R) are true and (R) explains (A)
b) Both (A) and (R)are true: (R) does not explain (A)
c) (A) is correct (R) is false
d) (A) is false (R) is true
Answer: c) (A) is correct (R) is false
Reason (R) : Paddy and wheat are grown well in the soil.
a) Both (A) and (R) are true and (R) explains (A)
b) Both (A) and (R)are true and (R) does not explain (A)
c) (A) is correct (R) is false
d) (A) is false (R) is true
Answer: A) Both (A) and (R) are true and (R) explains (A)
Pick the odd one out
Question 1. a) Wheat b) Rice
c) Millets. d) Coffee
Answer: d) Coffee ( Reason - Cash crop)
Question 2. a) Khadar b) Bhangar c) Alluvial soil. d) Black soil
Answer: b) Black soil (Reason – Suitable for cotton)
Question 3. a) Inundational canals b) Perennial canals c) Tanks d) Canals
Answer: c) Tanks (Reason – water can be
sotres)
Answer briefly
Question 1.Defines oil.
Soil is one of the most important natural resources.
It is the uppermost layer of the land surface.
Usually, it is composed of minerals, organic matter, living organisms, air and water.
It is generally formed by the weathering of rocks under different conditions.
Answer:
The eight types of soil found in India
re-Alluvial soil
Forest and Mountain soil
black soil
arid and desert soil
Red soilSaline and alkaline soil
late rite soil
Peaty and marshy soil
Answer :
Black soil is derived from the basalts of Deccan trap.
It is black in colour due to presence of titanium and iron.
Its nature is sticky when wet.
Answer 4. What is Multipurpose project?
Answer:
Itisascientificmanagementofwaterresourcesinourcountry.
The construction of dams across rivers is aimed at many purposes.
It helps in irrigation, hydro power generation, water supply for drinking and industrial purpose,controlling floods,development of fisheries,navigation,etc.
These types of dams are called Multi-purpose projects.
Answer:
Agriculture is the process of producing food,fodder for cattle,fodder for cat other desired products and the raising of domesticated animals (livestock).
The types of agriculture practices in India are -Subsistence farming Dry farmingShifting agriculture mixed farming agriculture intensive farming Terrace cultivation
Answer:
The seasons of agriculture in India are Kharif Season June – September
Rabi Season Zaid Season October – March April - June 8.
Mention the plantation crops of India.
Plantation crops are cultivated for the purpose of exports.
These are cultivated in large estates on hilly slopes.
Tea, coffee, rubber and spices are the major plantation crops of India.
Marine or Sea fisheries
include coastal offshore and deep sea fisheries mainly on the continental self up to a depth of 200 m. Among the coastal states, Kerala leads in the marine fish production in India.
inland or freshwater fisheries: is practised in rivers, lakes, canals, reservoirs, ponds,tanks,etc.,AndhraPradesh is the leading freshwater fisheries produce in India.
Give reasons for the following topics
1. Agriculture is the backbone of India. ?
Reasons : Agriculture is the backbone of India because majority of the India’s population are dependent on agriculture, its allied activities and agro-based industries India.
*according to2011 agricultural census of India,an estimated 61.5% of the people are dependent on agriculture.
Reasons : Rain water harvesting is important because To conquer the deficiency of surface water to meet our demands.
To capture the decline in ground water levels. To improve the accessibility of ground water at particular place and time and use rain water for supportable advancement.
Reasons : The farmers are dependent on land, water, inputs, credits, technology and markets. Itisnotpossibleforthefarmerstogettheabovebenefits.
The income of the famers is meagre. They are unable to invest everything on the farms.
So, small farms are predominant in India
Answer in a Paragraph
Answer:
Soil is one of the most important natural resources. It is the uppermost layer of the land surface. It is generally formed by the weathering of rocks under different conditions. The eight types of soils and its characteristics are
Alluvial soils:
It is the sediments deposited by streams and rivers.
The two varieties of Alluvial soils are Khadar and Bhangar. Khadar is light coloured and Bhangar dark in colour.
Its chemical properties are – rich in potash, phosphoric acid and carbon compounds. But, poor in nitrogen.
Sandy, loam, silt and clay are its nature.
The soil is distributed in ganga and Brahmaputra river valleys, plains of Uttar Pradesh, Punjab, Haryana, West Bengal and Bihar.
Black soils:
Black soil is derived from basalts of Deccan trap. It is black in colour due to presence of titanium and iron.
It consists of calcium and magnesium carbonates, iron, aluminium, lime and magnesia. But, poor in nitrogen phosphoric acid and humus.
Its nature is sticky when wet and high degree of moisture retentive.
This type of soil found in Malwa plateau, Kathiawar peninsula, Telangaga and Rayalaseema.
Red Soil:
It is formed due decomposition of ancient crystalline rocks like granites and gneisses.
Itisrichinmineralssuchasironandmagnesiumanddeficientinnitrogen,humus, phosphoric acid and lime.
Light texture, porous friable presence of limited soluble salts.
Red soil is found in Eastern part of Deccan plateau, southern states of Kerala, Tamilnadu, Kerala and Chota Nagpur Plateau.
Laterite soils:
This soil is formed by the process of leaching.
This soil is composed of hydrated oxides of iron and aluminium.
Its nature is more acidic on higher areas and poor in high level, clay and easily retains moisture.
It is found in Assam hills, hill summits of Kerala and Karnataka and Eastern ghaBarrage
Forest and Mountain soils:
Due to mechanical weathering caused by snow, rain, temperature variation are the reasons for the formation of these soils.
Theyaredeficientinpotash,phosphorus and lime.
Their nature is light, sandy and thin. Their character changes with the parent rocks. Very rich in humus, slow decomposition makes it acidic.
These soils found in the forest belts of Jammu and Kashmir, Himachal Pradesh, Sikkim and Eastern and Western Ghats.
Arid and desert soils:
It contains high percentages of soluble salts, alkaline with varying degree of calcium carbonate and is poor in organic matter.
The soils are light in colour, low humus and friable structure and low in moisture.
These soils are found Rajasthan, Northern Gujarat and Southern Punjab.
Saline and alkaline soils:
It is formed due to ill drainage. Salts are transferred from subsurface to the top soil by the capillary action.
The soil liberates sodium, magnesium and calcium salts and sulphurous acid. It consists of un decomposed rock and mineral fragments.
The soils are found in Andhra Pradesh and Karnataka, Haryana, Punjab, Rajasthan and Maharashtra.
Peaty and marshy soils:
It is formed in humid regions from the organic matter.
Thesoilisdeficientinpotashandphosphate.Containconsiderableamountof soluble salts.
The soil is found in some parts of Kerala, coastal areas of Odisha and Tamilnadu and Sundarban regions.
The construction of dams across rivers is aimed at many purposes. It helps in irrigation, hydro power generation, water supply for drinking and industrial purpose, controlling f loods,developmentoffisheries,navigation,etc.these types of dams are called multi purple projects.
i) Bhakra-NangalProject:
The most ambitious project to convert large barren semi-arid region of North West India into lush green fertile agricultural field was hairs an gal.Itwas one of the largest multipurpose Indian projects constructed over the river Sutlej. After construction, Bhakra-Nangal became one of the highest dams in the world. The entire project is divided into two separate divisions. They are-
i) The Bhakra Dam and
ii) The Nangal Barrage
TheBhakraDamhasthecapacitytostoremorethan10,000 million water. This lake is popularly known as Govind Sagar Lake.
Nangal dam is located 13km downstream of Bhakra. The combined length of Bhakra-Nangal Canal exceeds 1000 kms.
Apart from the two main dams storage, this project comprises several hydro projects.
Nearly,almost all of Punjab,large areas of haryana and Rajasthan are be benefited directly by the Bhakra Nangal multipurpose project.
ii) Hirakud Project :
Mahanadi is the lifeline of Orissa. It enters Orissa from the highland of Naraj. This rapid fall from considerable height provoked planners to erect this monumental dam at Hirakud. It is the longest dam in the world and irrigates 1,41,600 sq. km. Its objectives are
Harnessing ample by del power from swift flow water. Control of occasion a of poor and resultant havoc.
Irrigation through canals to large areas of Puri and Cuttack districts.
Improvement of water transport through greater navigability.
Overall economic development of the area by providing employment at the project.
Rapid industrialization of the area through the stable and assured power supply.
3. Bring out the characteristics of Intensive and Plantation farming. Agriculture is the process of producing food for people,fodder for cattle,fibre and many other desired products. A variety of farming practises are followed in India. Intensive farming: Intensive farming is an agricultur alinten suffixation and mechanization system of agriculture.
It aims to maximize yields from available land through various means such as using pesticides and chemical fertilizers. This method is applied to raise in livestock with billions of animals such as cows, pigs and chickens being held indoors. Intensive farming is practiced in Punjab, parts of Rajasthan, Uttar Pradesh and Madhya Pradesh in India.
Plantation agriculture :
It is a formof commercial farming where crops are grown for profit.
Countries that have plantation agriculture usually experience high annual temperatures and receive high annual rainfall.
Some of the important plantation crops are tea, coffee, cocoa, rubber, cotton, oil palm, sugarcane, bananas and pineapples.
The characteristic features of this type of farming are large estates or plantations, largecapitalinvestment,scientificmethodsofcultivation,singlecropspecialisation, cheap labour and a good system of transportation and markets for the export of the products.
Plantation agriculture is followed in Kerala, Karnataka, Himachal Pradesh, Jammu & Kashmir and most of the Eastern States of India.
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