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Floods Lesson

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The Function of Rivers

Rivers have two basic functions:

  1. Move runoff away from land and out to the sea (or lake)
  2. Transport sediments (erosion)

In doing so they help to erode the rocks on the surface of our planet, help replenish water in the oceans and help bring the raw materials to make salts to the ocean.

All rivers move at various speeds as they move towards the ocean. There are several factors that determine a river's velocity:

Erosion is the transportation of sediments. There are three types of load:

A river's load is related to:

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