Q1 of 20 Page 54

Depending upon the topography and materials around you, observe and record climate, possible weathering process and soil contents and characteristics.

I live in Kolkata. The following details are as follows:-

1. Climate- Tropical wet and dry climate with mean temperature is 32°C.


2. Soil - Kolkata has alluvial soil because of its deposits on the banks of river Ganga. Laterite soil is also common. Therefore agriculture flourishes in Kolkata and its surroundings.


3. Weathering process- The main weathering process in Kolkata is running water as there are lot of rivers like Damodar, Ganga etc. Wind transportation is also common.


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2

Answer the following questions in about 30 words.

(i) It is weathering that is responsible for bio-diversity on the earth. How?


(ii) What are mass movements that are real rapid and perceptible? List.


(iii) What are the various mobile and mighty exogenic geomorphic agents and what is the prime job they perform?


(iv) Is weathering essential as a pre-requisite in the formation of soils? Why?


 3

Answer the following questions in about 150 words.

(i) “Our earth is a playfield for two opposing groups of geomorphic processes.” Discuss.


(ii) Exogenic geomorphic processes derive their ultimate energy from the sun’s heat. Explain


(iii) Are physical and chemical weathering processes independent of each other? If not, why? Explain with examples


(iv) How do you distinguish between the process of soil formation and soil forming factors? What is the role of climate and biological activity as two important control factors in the formation of soils?


 1

Why is the surface of the earth uneven?

 2

Do you think it is essential to distinguish geomorphic agents and geomorphic processes?