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!
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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See also
- What Makes a River Flow Faster Than Another?
- What Makes a River Flow Faster or Slower?
- What Makes a River ‘Fast’ or ‘Slow’?
- How Do ‘Rivers’ Shape Human Civilization?
- How Do ‘Rivers’ Change the Shape of the Land Over Time?
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