Tuesday, 2 July 2013

Geo ch 2 class 8


Question And Answers

Question 1:

Answer the following questions.
(i) Which are the two main climatic factors responsible for soil formation?
(ii) Write any two reasons for land degradation today.
(iii) Why is land considered an important resource?
(iv) Name any two steps that government has taken to conserve plants and animals.
(v) Suggest three ways to conserve water.

(i) Temperature and rainfall are the two main climatic factors responsible for soil formation.
(ii) Deforestation and the indiscriminate use of chemical pesticides and fertilisers in agricultural lands are two factors contributing to land degradation.
(iii) Land is among the most important natural resources. It provides habitation to a wide variety of flora and fauna. Human beings use land for various purposes such as agriculture, forestry, mining, building houses and roads, and setting up industries.
(iv) Two steps that the government has taken to conserve plants and animals:
(a) Has set up national parks, wildlife sanctuaries and biosphere reserves for protecting natural vegetation and wildlife; for example, the Kaziranga National Park in Assam.
(b) Has banned the killing of lions, tigers, deer, great Indian bustards and peacocks. It has also prohibited the trade of the species of plants and animals protected under the international agreement CITES.
(v)Three ways to conserve water:
(a) Rain-water harvesting
(b) Reducing wastage of water
(c) Replenishing ground water by promoting afforestation

Tick The Right Answer

(i) Which one of the following is not a factor of soil formation?(a) Time(b) Soil texture (Yes)  (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 (Yes)

(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 (Yes) 

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