THE WATER CYCLE - GLOBAL SCALE

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4 Terms

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Water can be stored in 4 areas

  • hydrosphere ( liquid water )

  • Lithosphere ( water in crust and upper mantle )

  • Cryosphere ( frozen water )

  • Atmosphere ( water vapour )

<ul><li><p>hydrosphere ( liquid water )</p></li><li><p>Lithosphere ( water in crust and upper mantle )</p></li><li><p>Cryosphere ( frozen water )</p></li><li><p>Atmosphere ( water vapour )</p></li></ul>
2
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What is an aquifer

  • underground water stores

  • Shallow groundwater aquifers can store water for 200 years

  • Deep aquifers can last for 10,000 years

3
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Size of stores ( 10,000km²)

  • ocean =1,400,000

  • ice and snow =22,000

  • underground =23,000

  • lakes = 200

  • soil moisture = 15

  • atmosphere = 15

  • plants + animals = 2

  • rivers = 2

4
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Size of fluxes ( 10,000km²)

  • evaporation = 330

  • precipitation over sea = 300

  • precipitation over land = 100

  • evapotranspiration - 60

  • run off = 20

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