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Rocks and Rock Types — Geography STD 6 — Question

Maharashtra BoardEnglish MediumSTD 6GeographyRocks and Rock Types3 Marks
Question
How is sand that flows in a river formed? Collect some information about where the sand comes from.
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Answer

  • Moving streams are so powerful that it can wear away soil rocks.
  • Rocks on higher land get eroded due to the strong current of the streams and they in turn get carried away into the sea.
  • Silt too is brought down from the mountain top from where the streams originate.
  • Most of the sand in the river is silt carried by the streams and the weather material from inland rocks transported by the streams.
  • The moving of soil and rock with the stream, termed as erosion can be summed up as the cause of sand formation in a river.

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