Processes at hill slope, drainage basin and global scales with reference to varying timescales
Water cycle processes operate at three scales — a single slope, a whole river catchment, and the entire globe. Each scale involves different processes and runs over very different lengths of time.
Real World
Throughflow on a Lake District hillslope can deliver water to a stream within hours of a rainstorm, while water that percolates into the Chalk aquifer beneath the South Downs may take thousands of years to reach the sea.
Exam Focus
Always link a named process to a specific timescale and spatial scale — examiners reward precise scale-process matching.
Essay Framework
Use PEEL to structure every paragraph. Tap each step for guidance and an example.
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