What Makes a River Flow?

Rivers flow because water moves from high places to low places, like a ball rolling down a hill. When it rains or snow melts, the water runs downhill and creates a river. Sometimes gravity pulls it all the way to the ocean!

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Examples

Rain falling on a mountain makes the water run down into a stream.
Snow melting in spring turns a frozen valley into a flowing river.
Water from a lake flows out through a narrow channel into a river.

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Categories: Environment · rivers,water cycle,geography