Consider the following statements regarding lsquo Work of a River rsquo 1 Waterfalls form when...........

Geography NCERT

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.Consider the following statements regarding ‘Work of a River’.

1.Waterfalls form when the river tumbles at steep angle over soft rock.

2.When river approaches the sea, the speed of flowing water increases

3.Collection of sediments from all the mouths forms a delta.

Choose the correct statements using the codes given below

1,2 and 3 only

1 and 2 only

3 only

2 and 3 only

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Explanation:

· The running water in the river erodes the landscape. When the river tumbles at steep angle over very hard rocks or down a steep valley side it forms a waterfall.
· As the river approaches the sea, the speed of the flowing water decreases and the river begins to breakup into a number of streams called distributaries.
· The collection of sediments from all the mouths forms a delta.