Q7 B of 49 Page 120

Consider the following statements and choose the right option given below:

Statement I. Running water is an important agent of gradation.


Statement II. The work of the river depends upon the slope of the land in which it flows.


a. Statement I is false and II is correct.


b. Statement I and II are false.


c. Statement I is true and II is false.


d. Statement I and II are true.


Gradation is the process of levelling up and formation of land surface by the operation of natural agents like air, water, glaciers or sea waves. Running water and rives are very important agents of gradation. The extent of the action of rivers depends upon many factors. The volume of water in the river, its velocity and speed, the gradient and slope of the land, the number of sediments and particles carried by the river are some of the factors determining the flow of the river.

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6

Answer in a paragraph.

Give a detailed account of the three orders of the landforms.


 7 A

Consider the following statements and choose the right option given below:

i. ‘I’ shaped valley is an erosional feature of the river.


ii. ‘U’ shaped valley is an erosional feature of the glacier.


iii. ‘V’ shaped valley is an erosional feature of the glacier.


a. i, ii and iii are right


b. i and ii are right


c. i and iii are right


d. Only i is right


 7

Consider the following statements and choose the right option given below:

Statement. Limestone regions have less underground water.


Reason. Water does not percolate through limestone.


a. The statement is right reason is wrong.


b. The statement is wrong reason is right.


c. The statement and reason are wrong.


d. The statement and reason are right.


 8 A

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Is wind the only gradient agent in the desert?