Q1 of 20 Page 45

Why is the surface of the earth uneven?

The speed of the rotation of the earth is responsible for this. The difference in the internal forces operating from within the earth which built up the crust is responsible for the variations in the Earth’s crust.


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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

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

 2

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

 3

Epeirogeny and orogeny, cite the differences.