Social Science
Ch - Natural Resources : Land, Soil and Water
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A. Tick the Correct Option.
Q. 1. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Wind Erosion.
Q. 2. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- rotation of crops.
Q. 3. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- large scale displacement of people.
Q. 4. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- increasing water table.
Q. 5. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- extreme difference in day and night temperature.
B. Fill in the Blanks.
Q. 1. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Torrid, Temperate.
Q. 2. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- 33.
Q. 3. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Afforestation.
Q. 4. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Lakes and Rivers.
Q. 5. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Blue.
C. Write a Technical term or an appropriate word for the following statements.
Q. 1. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Fossil Fuels.
Q. 2. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Parent Rock.
Q. 3. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Soil.
Q. 4. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Multipurpose project.
Q. 5. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Soil Erosion.
D. Answer the following questions in brief.
Q. 1. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Soil is considered as an important resource because :-
i) Soil provide nutrients to the plant.
ii) Indirectly animals depend upon the soil to satisfy their basic needs.
iii) It gives shelter to insects and animals like rats, snakes, ants, etc.
Q. 2. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- i) Deforestation
ii) Floods
iii) Over-grazing
Q. 3. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :-
Evaporation :- Liquid form of water get converted into vapour form by the heat of sun is called evaporation.
Condensation :- Vapour form of water get converted into liquid form is called condensation.
Precipitation :- Falling of water droplets on the ground from sky is called precipitation.
Q. 4. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- The quality of water in some rivers is adversely affected as the untreated industrial waste and urban waste is dumped into them. This makes the river water unsuitable for consumption.
Q. 5. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Ecological problems caused by building large dams are :-
i) Extensive forests submerged underwater.
ii) River water gets diverted.
iii) Population gets displaced.
E. Answer the following questions.
Q. 1. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Five factors responsible for the formation of soil are :-
i) Parent Rock :- The original rock from which soil is formed by the process of weathering is known as parent rock.
ii) The Topography :- Topographical variations, such as mountains, plateaus and plains affect the thickness of a soil cover.
iii) The Climate :- Climate factors like temperature and rainfall, affect the formation of soil.
iv) The Vegetation cover :- At ancient times, plants grow in the cracks existing in a rock with time, roots of these plants starts penetrating in the cracks and make them wider. As a result cracks disintegrate into smaller pieces.
v) Time :- Time gives maturity to the Soil.
Q. 2. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Land is used for various purposes such as cultivation of crops. Constructing of roots & railways, etc. These Various uses of land is known as land-use pattern.
It is important to study the land use pattern because land is very essential for survive. If we do not use it by right way than the soil get eroded and we all are have to face a big problem.
Factors influencing the utilisation of land such as :- Relief, Soil, Climate Conditions, Mineral resource, etc.
Q. 3. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Multipurpose river valley project have been developed all over the world to utilise water. These Projects serve Many Objectives at the Same time. Ex :- Damodar River valley project and Hirakund dam.
The main objectives of multipurpose river valley project are :-
i) Irrigation
ii) Flood Control
iii) Generating HydroElectricity
iv) Afforestation
v) Navigation, etc.
Q. 4. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Five steps to Conserve Soil. are :-
i) Afforestation
ii) Crop rotation
iii) Contour ploughing and terrace farming
iv) By restricting the over-grazing of animals.
v) By Building dams to avoid flood.
Q. 5. (For Questions, See your book or download this Chapter PDF by Clicking here)
Ans :- Five methods for the Conservation of Water are :-
i) Water harvesting
ii) Afforestation to improve underground storage.
iii) Demands of water from industries can be met by recycled water.
iv) The rain water should be impounded by making dams across the river.
v) Water can be conserved by installing water in increasing the aquifer(Water Table) of underground water.
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