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Summary Pearson Edexcel EQ1 Water cycle and Water insecurity Full notes - A* Student £4.49
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  2.  
  3. PEARSON (PEARSON)
  4.  
  5. Geography 2016
  6.  
  7. Unit 3 - Physical Systems and Sustainability

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Summary Pearson Edexcel EQ1 Water cycle and Water insecurity Full notes - A* Student
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Full topic notes from EQ1 of the Water cycle and water insecurity unit. These notes are in depth for every area of the topic (when paired with EQ2 and EQ3). They have secured me an A* in Geography so hoping they can help you too. (Sat in 2023)

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  • July 18, 2024
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  • 2023/2024
  • Summary

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EQ1: What are the processes operating within the hydrological cycle from global to local
scale?

The Water Cycle:




Distribution of global water stores:
Hydrosphere – 96.5%
Atmosphere – 0.001%
Cryosphere – 1.7%
Lithosphere – 1.7%

Limited availability of fresh water:
- Total global water only accessible is 96.5% ocean water
- Freshwater supply: earth only has 2.5% of all water is freshwater
- Only 1.2% of this is earth’s freshwater supply
- The amount of accessible is only 1%

A drainage basin or catchment area is any are of land where precipitation collects and drains
off into a common outlet, normally a river.

The drainage basin as a system:

Inputs: precipitation, snow melt.
Transfers: river flow, stem flow, overland flow, groundwater flow, percolation, infiltration,
three flow, interception.
Store: soil moisture storage, surface storage, groundwater.
Output: transpiration, evaporation.

Three types of rainfall:

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