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The systems theory
 

The systems theory

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    The systems theory The systems theory Presentation Transcript

    • The drainage basin hydrological cycle: The Systems Theory:
      • Learning Objectives:
      • To describe the features of the drainage basin hydrological cycle and understand the systems model of inputs, flows, storage and outputs.
      • To identify correctly which features of a drainage basin represent which part of the system.
    • What is the Hydrological cycle? Recap our hydrological cycle homework- does anyone need to redo? The hydrological cycle is an example of a system – Write a definition of the concept of a system
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    • The global hydrological cycle is closed. Drainage basins are open systems interconnected to other systems.
    • Look at fig. 1.3: What are the Main Inputs?… What are the main flows (or transfers) or stores? What are the main outputs? Think about how humans might influence the hydrological cycle.
    • Check you have completed your shaded systems model to show inputs, flows and transfers and outputs.
    • Look at fig. 1.2 and 1.3:
      • Choose one route that water could take through the drainage basin and describe it using at least 10 new words !
      • (highlight the words to identify clearly where you have used them and that you have used them correctly.
      • Explain how the path the water takes might change if the conditions become;
      • a) very dry after a 6 week period of low rainfall
      • b) Conditions become very wet after an intense 3 day storm.
      • 3. Explain how humans can interfere with and change the drainage basin water cycle.
      • Learning Objectives: RECAP
      • To describe the features of the drainage basin hydrological cycle and understand the systems model of inputs, flows, storage and outputs.
      • To identify correctly which features of a drainage basin represent which part of the system.