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Hydrographs and Drainage Basins

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Drainage basins involve water being returned to the oceans as part of the global ... Overland Flow. Groundwater. Percolation. Soil Moisture Storage. Soil Infiltration ... – PowerPoint PPT presentation

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Title: Hydrographs and Drainage Basins


1
Hydrographs and Drainage Basins
2
Drainage Basins
  • A drainage basin is the catchment area of a river
    and its tributaries.
  • The boundary of the catchment area is called the
    watershed.
  • Drainage basins involve water being returned to
    the oceans as part of the global hydrological
    cycle.
  • What is important in drainage basins is not the
    size of the basin but how much water flows
    through it.

3
(No Transcript)
4
Key Terms
  • Discharge the amount of water passing
  • a certain point at a certain time,
  • measured in cubic metres per second
  • Velocity the speed of the water within the
  • river, measured in metres per second.
  • Volume The amount of water in the river
  • system, measured in square metres

5
Task 1
  • Using your New Higher Geography textbook, page
    12.
  • Answer question (a), (b), (c) and (d) in Activity
    2.
  • You have 30 minutes to do this

6
The Drainage Basin is an OPEN system
  • An OPEN system means that it has INPUTS and
    OUTPUTS.

7
(No Transcript)
8
Task 2
  • With the aid of an diagram, describe the
  • movement of water within the drainage
  • basin system.
  • You have 15 minutes to answer this question
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