River sources, the water cycle, rapids

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River sources, the water cycle, rapids

• By George Madden

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Sources of rivers

• The start of a river is called a source and
  they can come from anywhere such as rocks or
  soil.
• Bogs
• Springs
• Melting snow and ice
• Puddles

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A bog
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A spring
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Melting snow and ice
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A puddle
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The water cycle
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Movement of a river

• Rivers move in many different ways.

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Rapids

• Rapids are parts of a river that move very fast
  and have a very strong current. If anything tried
  to stand up in them they would get swept off
  their feet and would probably go under the water
  and drown. At the rapids, the river is shallow
  and flowing very quickly over rocks, boulders and
  stones poking out above the water level.

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Waterfalls

• Waterfalls are formed when water cannot pass
  through rocks so it goes straight over the top of
  it. This is a picture of Niagara falls in America.

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Tributary
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Oxbows

• An oxbow is a narrow necked loop of a river.
  Oxbow lakes are oxbows that have been abandoned
  by a river but still contain water. Below are the
  stages of an oxbow.

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Meanders

• A meander is a bend in a river. Meanders normally
  occur in the middle and lower courses of a river
  where the water moves more slowly. The river
  carves out s-shaped bends.

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Deltas

• Deltas are areas of flat land that form at a
  rivers mouth or in a lake.

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Estuaries

• An estuary is a river mouth that does not contain
  a delta

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End

• Thank you for watching my power point
  presentation. I hope you enjoyed it and I hope
  you have learned a lot.
• By George Madden Y6