Class X GEO

A Resource is anything available in our environment that is technologically accessible, economically feasible, and culturally acceptable.

Resources are classified into four main categories:

Origin: Biotic (living) and Abiotic (non-living).

Exhaustibility: Renewable (solar, wind) and Non-renewable (minerals, fossil fuels).

Ownership: Individual, Community, National, and International.

Status of Development: Potential, Developed, Stock, and Reserves.

2. Development and Planning

Indiscriminate use of resources has led to global crises like global warming and land degradation.

Sustainable Development: Development should take place without damaging the environment and without compromising the needs of future generations.

Rio Earth Summit (1992): The first international summit to address environmental protection, resulting in Agenda 21.

Land Resources

Land is a vital natural resource because it supports human life, wild life, economic activities, transport, and communication systems. However, land is a finite asset, meaning it is limited in size, so it must be used with careful planning.

1. Land Under Important Relief Features

India possesses a variety of relief features, which are categorized based on their utility:

 * Plains (43%): Provide facilities for agriculture and industry.

 * Mountains (30%): Ensure the perennial flow of some rivers and provide facilities for tourism and ecological aspects.

 * Plateaus (27%): Possess rich reserves of minerals, fossil fuels, and forests.

Land Utilization Categories

Land resources are used for the following purposes:

 * Forests.

 * Land not available for cultivation:

   * Barren and waste land.

   * Land put to non-agricultural uses (buildings, roads, etc.).

 * Other uncultivated land: Permanent pastures and meadow lands.

 * Fallow lands: Left uncultivated for one or more seasons to regain fertility.

 * Net Sown Area: Area sown more than once in an agricultural year plus net sown area is known as Gross Cropped Area.

Land Use Pattern in India

The use of land is determined by both physical factors (topography, climate, soil types) and human factors (population density, technological capability, culture, and traditions).

Total Geographical Area of India: 3.28 million sq. km.

 * Net Sown Area (NSA): The physical area where crops are sown and harvested. In India, this varies greatly from over 80% in Punjab and Haryana to less than 10% in Arunachal Pradesh, Mizoram, and Manipur.

 * Forest Area: Far lower than the desired 33% of geographical area as outlined in the National Forest Policy (1952).

 * Waste Land: Includes rocky, arid, and desert areas, and land put to other non-agricultural uses (settlements, roads, railways).

Land Degradation

Continuous use of land over a long period without taking appropriate measures to conserve and manage it results in land degradation.

Causes of Land Degradation:

 * Deforestation: Primarily due to mining activities (e.g., Jharkhand, Chhattisgarh, Odisha).

 * Overgrazing: A major cause in states like Gujarat, Rajasthan, Madhya Pradesh, and Maharashtra.

 * Over-irrigation: Leads to waterlogging and increased salinity/alkalinity in the soil (e.g., Punjab, Haryana, Western Uttar Pradesh).

 * Industrial Effluents: Discharge of waste from industries pollutes land and water.

 * Mineral Processing: Grinding of limestone for cement industry generates huge quantities of dust which settles on land and retards water infiltration.

4. Conservation Measures

To protect land resources, several steps can be taken:

 * Afforestation and proper management of grazing.

 * Planting of shelterbelts of plants to prevent wind erosion.

 * Control on overgrazing.

 * Stabilization of sand dunes by growing thorny bushes in desert areas.

 * Proper management of waste lands and control of mining activities.

 * Treatment of industrial effluents before discharge.

Soil as a Resource: Soil is the most important renewable natural resource. It is classified into:

Alluvial: Highly fertile, found in northern plains.

Black: Ideal for cotton (Regur soil).

Red & Yellow: Developed on crystalline igneous rocks.

Laterite: Result of intense leaching due to heavy rain.

Arid & Forest soils: Found in dry and hilly regions respectively.

 Resources & Development

RESOURCES

Types

By Origin: Biotic, Abiotic

By Exhaustibility: Renewable, Non-renewable

By Ownership: Individual, Community, National, International

By Status: Potential, Developed, Stock, Reserve

Development Issues

Depletion for greed

Accumulation in few hands

Global ecological crises

Resource Planning

Steps: Identification > Planning structure > Matching with national goals

Conservation: Gandhiji’s view ("Enough for everyone's need, not for greed")

Land & Soil

Land Use: Forest, Fallow, Net Sown Area

Degradation Causes: Mining, Overgrazing, Over-irrigation

Soil Types: Alluvial, Black, Red/Yellow, Laterite, Arid, Forest

Conservation: Contour ploughing, Terrace farming, Shelterbelts

Key Terminology to Remember

Gully Erosion: When running water cuts through clayey soils, making deep channels.

Bad Land: Land unfit for cultivation (e.g., Chambal basin).

Sheet Erosion: When topsoil is washed away over a large area by water flowing as a sheet.

Would you like me to create a set of practice multiple-choice questions (MCQs) based on this chapter to help you prepare for your exams?

Class 9

 ECONOMICS CHAPTER 2 

1. What is the role of education in human capital formation?

Ans. Education plays a significant and very vital role in human capital formation in the following ways

* Education helps humans to achieve and realise their full potential.

* It helps to get higher incomes earned through better jobs and higher productivity.

* Education helps the people by broadening their knowledge and providing them training.

* It opens new opportunities for earning things like doing business, job. etc.

* It contributes towards the growth of society.

* It enhances national income, cultural richness and the efficiency of governance.

2. What is the role of health in human capital formation?

Ans. Health plays an important role in human capital formation in the following ways

* A person with good health can work efficiently.

* Healthy people can realise their full potential and contribute better to the society and to the country.

* By increasing their working capacity, healthy people can improve their standard of living.

3. What is unemployment?

Ans. Unemployment is a situation where someone of working age is not able to get a job. It is expressed as a percentage of the total available workforce. The level of unemployment varies with economic conditions and other circumstances.

4. What is the difference between disguised unemployment,seasonal unemployment and educated unemployment?

Ans. Differences between disguised unemployment,seasonal unemployment and educated unemployment are as follows.

Disguised Unemployment

 Seasonal Unemployment

 Educated Unemployment 

 In case of disguised unemployment, people appear to be employed, but are actually not employed

 Seasonal unemployment happens when people are not able to find jobs during some months of the year

 Many young people with matriculation, graduation and post graduation degrees are not able to find jobs. This situation leads to Educational Unemployment.

 It is mostly found in agriculture.

 It is mostly found in agro based industries

 It is mostly found in the service sector.

 It is mainly found in rural areas.

 It is found both in rural as well as urban areas

 It is mainly found in urban areas.

 Sometimes, farmers have a lot to do during busy seasons like planting and harvesting, but some seasons they don't have much work.

 Sometimes a farm required 5 people to work, but 8 people might be working in the farm so these 3 extra people are disguised unemployed.

 A worker with graduation working as a cleaner is an example for educated unemployment.

 5. State the steps taken by the government to give education to all.

Some important steps are 

* The primary school system has expanded to over 7,78,842 lakh in 2019-20 in India.

* The government's initiative of Sarva Shiksha Abhiyan aims at providing elementary education to all children in the age group of 6 to 14 years.

* Mid-day Meal Scheme has been implemented to encourage attendance and retention of school children and improve their nutritional status.

* There is provision for providing universal access, retention and quality in elementary education with a special emphasis on girls.

* Special schools called Navodaya Vidyalaya have been established in each district in India.

POLITICS CHAPTER 2

1. Which national leader tried to draft a Constitution for India as far back as in 1928?

Ans. Pandit Motilal Nehru tried to draft a Constitution for India in 1928.

2. When were the elections to the Constituent Assembly held in India?

Ans. The elections to the Constituent Assembly were held in July 1946.

3. Why do we need a constitution?

We need a Constitution because

(i) It generates a degree of trust and coordination that is necessary for different kinds of people to live together.

(ii) It specifies how the government will be constituted and who will have power to take which decisions.

(iii) It lays down limits to the powers of the government and tells us what are the rights of the citizens.

(iv) It expresses the aspirations of the people about creating a good society.

(v) The Indian Constitution safeguards the interests of minorities, the backward classes, poor and weaker sections of our society. It gives Universal Adult Franchise to all and establishes equality for all.

4. What was the procedure adopted for making the Indian Constitution?

The following procedure was adopted for making the Indian Constitution are

* The 'Drafting Committee' chaired by Dr BR Ambedkar prepared a draft of the Indian Constitution for discussion.

* Several rounds of discussion took place on the Draft Constitution, clause by clause. The members worked for 114 days spread over three years.

* More than two thousand amendments were considered. Every document presented and every word spoken in the Constituent Assembly has been recorded and preserved.

COMPUTER NOTES

1. What is the use of input unit?

Ans. Input unit is used to feed the data and give some instructions to the computer.

2. How many types of keys are available on the keyboard? 

Ans. (1) Alphanumeric keys (ii) Numeric keys (iii) Control keys (iv) Function keys (v) Navigation keys

4. Name the input device which is mostly used to play games on the computer,

Ans. Joystick

5. You want to insert your photo (printed on paper) on the computer, which device will you use?

Ans, Scanner,

6. For which applications microphone is used?

Ans. Microphones are used in many applications such as telephones, tape recorders, hearing aids, motion picture production, live and recorded audio engineering, in radio and television broadcasting and in computers for recording voice.

7. What is the use of the output unit?

Ans. This unit helps the user to get output generated by the computer in different formats.

8. What are the types of monitors?

Ans, CRT monitor, LCD monitor and LED monitor,

9. What are two types of printer?

Ans. Impact printers and Non-Impact printers.

10. What is the use of storage units ?

Ans. Storage units are used to store the data or information in the computer so that we can use it later.

11. What are the two types of memory unit?

Ans. Primary memory and secondary memory.

12. In which form data is stored in the computer?

Ans. All digital computers store the data (number, character or other) in the form of binary digits Le.0 or 1.

13.What are two main things a computer is made up of?

Ans. A computer is made up of two things, hardware and software.

14. What is a program?

Ans. A program is a set of instructions.

15. What is a software?

Ans. Software is a collection of programs and related data which provides the instructions to a computer, what to do and how to do.

5. What are the types of software?

Ans. System Software, Application Software, and Utility Software.

6. What is the use of system software?

Ans. System software operates and controls the internal functioning of a computer. For example, formatting of a storage medium.

7. What are the types of system software?

Ans. Operating System, Device Drivers and Language translators (Compiler, Interpreters and Assemblers).

8. What is the use of application software?

Ans. Application software is any program designed to perform a specific function for the users. For example, creating an animation file in computer.

9. What are the categories of application software?

Ans. General-purpose application software and specific purpose application software.

10. What are utility programs?

Ans. These are the programs to help the end-user and tune the computer hardware/Software, Operating System or application software. For example, Disc Management, data backup, compression, Disc fragmentation, and anti-virus software.

11. What is encryption?

Ans. Encryption is the conversion of data into coded form using some special algorithms, called a cipher text that it cannot be easily understood by unauthorized people.

12. What is decryption?

Ans. Decryption is the process of converting encrypted data back into its original form (using proper algorithms), so that it can be understood by receiver.

 India's Forest Types

1. Tropical Evergreen Forests

 * Rainfall: Receive over 200 cm of rainfall.

 * Trees: Tall trees (up to 60 m or more).

 * Important trees: Ebony, Mahogany, Rosewood, Rubber, Cinchona.

 * Animals: One-horned rhinoceros, elephants, monkeys, lemurs.

 * Location: Found in the Western Ghats, Northeast India, and the Andaman and Nicobar Islands.

2. Tropical Deciduous Forests

 * Rainfall: Receive rainfall between 70 cm and 200 cm.

 * Trees: Shed leaves for about six to eight weeks in the dry summer season. They are less dense than evergreen forests.

 * Important trees: Teak, Sal, Peepal, Neem, Shisham, Sandalwood.

 * Location: Found in the plains of Uttar Pradesh and Bihar, as well as parts of Madhya Pradesh, Odisha, Jharkhand, and Chhattisgarh.

 * Sub-types:

   * Moist Deciduous: Found in areas with rainfall between 100 and 200 cm.

   * Dry Deciduous: Found in areas with rainfall between 70 and 100 cm.

3. Tropical Thorn Forests and Scrubs

 * Rainfall: Receive less than 70 cm of rainfall.

 * Trees: Have long roots to access moisture, and leaves are thick and small to minimize evaporation.

 * Important trees: Acacias, Palms, Euphorbias, Cacti.

 * Location: Found in the dry parts of Rajasthan, Gujarat, Haryana, Punjab, and the semi-arid areas of Uttar Pradesh, Madhya Pradesh, Chhattisgarh, and the Deccan Plateau.

 * Animals: Rats, mice, rabbits, foxes, wolves, tigers, lions, camels, wild donkeys, horses.

4. Montane Forests

 * Trees: A wide range of vegetation types occur due to the change in temperature with increasing altitude.

 * Important trees: Oak, Chestnut, Fir, Pine, Spruce, Deodar.

 * Location: Found in the Himalayan regions of Jammu & Kashmir, Himachal Pradesh, Uttarakhand, Sikkim, and Arunachal Pradesh.

 * Sub-types:

   * Temperate Forests: Found at an altitude between 1500 and 3000 m.

   * Alpine Vegetation: Found at altitudes above 3600 m.

   * Tundra Vegetation: Found at higher altitudes with mosses and lichens.

 * Animals: Himalayan yak, snow leopard, ibex, and red panda.

5. Mangrove Forests

 * Trees: Can survive in saline water and are dense with prop roots submerged under water.

 * Important trees: Sundari trees.

 * Location: Found in the deltas of rivers like the Ganga-Brahmaputra, Mahanadi, Godavari, Krishna, and Kaveri.

 * Animals: Royal Bengal Tiger is a famous animal found in these foForest

Questions

1. Why are quite a few species of plants and animals endangered in India?

Answer: Endangered species of plants and animals are those which face the danger of getting extinct. About 1300 plant species are endangered and 20 species are extinct.

The main causes for this endangerment of plants and animals species are:

 * Hunting by greedy hunters for commercial purposes.

 * Pollution due to chemical and industrial wastes, acid deposits, etc.

 * Increasing population.

 * Reckless cutting of plants and trees to bring land under cultivation, expanding industrialization and habitation, etc.

 * Introduction of alien species causing imbalance in the ecosystem.

2. Write definitions

a) Natural Vegetation: This refers to a plant community that has grown naturally without any human intervention and has remained undisturbed for a long time.

b) Virgin Vegetation: This is another term for natural vegetation. It specifically denotes a plant community that is untouched by human activity. Crops, fruits, and orchards are part of general vegetation but not virgin vegetation.

c) Flora: The term flora is used to denote all the plant species found in a particular region or during a specific time period.

d) Fauna: This term refers to all the animal species of a particular region or period.

3. Types of Vegetation Found in India

According to the image, the following are the main types of vegetation found in India:

 * Tropical Evergreen Forests

 * Tropical Deciduous Forests

 * Tropical Thorn Forests and Scrubs

 * Montane Forests

 * Mangrove Forests

4. Why India Has a Rich Heritage of Flora and Fauna

India is one of the 12 mega bio-diversity countries of the world. With about 47,000 plant species and approximately 90,000 species of animals, India is home to a vast variety of plant and animal life, including a rich assortment of marine creatures. This diversity is primarily due to the country's varied geographical and climatic conditions.

Class 6 chapter 6

 D. 1. Most of the sites of the Indus-Sarasvati Civilisation developed around the banks of river Indus and its tributaries and river Sarasvati. This civilisation is therefore called by different names such as Sindhu-Sarasvati Civilisation (Sindhu is another name for Indus river), Indus Civilisation, Indus-Sarasvati Civilisation, and Harappan Civilisation. It is also called Harappan Civilization because city of Harappa was the fi rst of this civilisation to be excavated in the year 1920–21.

 2. People of Indus-Sarasvati Civilisation made achievements in various fi elds.

 • The people of the Indus-Sarasvati Civilisation were among the fi rst to develop a system of uniform weights and measures. The bricks they made were also uniform in size and shape.

 • Another achievement was in the fi eld of town planning. The cities followed a grid systems and the streets were often paved with bricks. This was the fi rst civilisation to incorporate urban sanitation systems.

  • They had far-fl ung trade contacts. Their trade network stretched from Mesopotamia to northern , central and even southern India.

 • Their script shows that the people had developed the art of writing.

 3. The water management system is one of the most important features of this civilisation. It was highly advanced. The kitchens and the bathrooms had drains leading out and were connected to the street drains. The main drains ran alongside the main roads and were lined with bricks.

Most of the drains were covered. The drains had inspection holes at regular intervals to clean

them.

 4. Wheat and barley were the common food grains eaten by the Harappans.

 5. Trade and commerce were signifi cant occupations. The people of the Indus-Sarasvatī Civilisation

traded both within the civilisation and with other civilisations. Remains of a trading post have

been found in northern Afghanistan and a port in Lothal, which also suggests that trade was

active.

Differentiate between tropical and temperate grassland class 8

 Tropical grassland 

Found in tropical zone Africa, Northern Australia, Brazilian highlands and Guiana Highlands.

They have dry season. Little rainfall in summer.

Small trees and stunted thorny bushes. 

Elephant, Giraffe, Zebra and Leopard are found 

Temperate Grasslands

Located between 30° & 50° latitudes.

Rainfall is inadequate.

Mostly treeless areas. Willow, Alder& poplar are found.

Grasses with different heights.

Temperature is -20°C to 21° C.

Prairie Dog, coyote, kangaroo, ostrich & emu.

Class 8 geography G3 vegetation

 

Class 8 history, revenue settlement differences

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