NCERT Solutions for class 8 Social Science Geography Chapter 2 Land Soil Water Natural Vegetation
Question:- 1. Answer the following questions.
(i) Which are the two main climatic factors responsible for soil formation?
Answer:- Temperature and Rainfall are the two main climatic factors responsible for soil formation.
(ii) Write any two reasons for land degradation today.
Answer:- Deforestation and excessive use of chemicals like pesticides and fertilisers in agricultural land are two reasons for land degradation today.
(iii) Why is land considered an important resource?
Answer:- Land is considered an important resource because it is used for different purposes such as agriculture, forestry, mining, building houses, roads and setting up of industries.
(iv) Name any two steps that government has taken to conserve plants and animals.
Answer:- Two steps that government has taken to conserve plants and animals are:-
- Set up of national park, biosphere reserves, and wildlife sanctuaries for the protection of natural vegetation and wildlife.
- Banned killing of many animals.
(v) Suggest three ways to conserve water.
Answer:- The three ways to conserve water are:-
- Rain water harvesting.
- Replenishing ground water.
- Shifting to less water-intensive methods of agriculture
Question:- 2. Tick the correct answer.
(i) Which one of the following is NOT a factor of soil formation?
(a) time (b) soil texture (c) organic matter
(ii) Which one of the following methods is most appropriate to check soil erosion on steep slopes?
(a) shelter belts (b) mulching (c) terrace cultivation
(iii) Which one of the following is NOT in favour of the conservation of nature?
(a) switch off the bulb when not in use
(b) close the tap immediately after using
(c) dispose polypacks after shopping
Answer:-
(i) b. Soil Texture.
(ii) c Terrace cultivation.
(iii) c Dispose poly packs after shopping.
Question:- 3. Match the followings :
(i) Land use | (a) prevent soil erosion |
(ii) Humus | (b) narrow zone of contact between the lithosphere,hydrosphere and atmosphere |
(iii) Rock dams | (c) productive use of land |
(iv) Biosphere | (d) organic matter deposited on top soil |
(e) contour ploughing |
Answer:-
(i) Land use | (c) productive use of land |
(ii) Humus | (d) organic matter deposited on top soil |
(iii) Rock dams | (a) prevent soil erosion |
(iv) Biosphere | (b) narrow zone of contact between the lithosphere,hydrosphere and atmosphere |
Question:- 4. State whether the given statement is true or false. If true, write the reasons.
(i) Ganga–Brahmaputra plain of India is an overpopulated region.
(ii) Water availability per person in India is declining.
(iii) Rows of trees planted in the coastal areas to check the wind movement is called intercropping.
(iv) Human interference and changes of climate can maintain the ecosystem.
Answer:-
- True:- Such Places offer suitable land for agriculture. Hence, they are overpopulated region.
- True:- Increasing population, wastage of water, pollution of water, deforestation, are reducing water availability per person in India.
- False
- False