5.7.2 Erosion

Last updated at April 25, 2026 by

What is Erosion?

It is the movement and transport of weathered rock particles by wind, water, or ice .

Key Facts and Examples
  • Flowing water carries rock particles and sediments downstream .
Example: River water carrying mud and sand during monsoon floods
  • Wind erosion moves sand particles from one place to another .
Example: Desert sand dunes changing shape and location due to wind
  • River rocks become smooth and rounded due to constant water flow .
Example: Smooth pebbles found on riverbanks after years of water erosion
  • Landslides are rapid erosion where large amounts of soil and rocks move downhill .
Example: Hillside landslide after heavy rains blocking mountain roads
  • Eroded sediments settle and harden over time to form new rocks .
Example: Sedimentary rock layers visible in canyon walls from ancient erosion
Erosion Process Weathered particles Small rock pieces ready Transport begins Wind, water, ice carry them Movement continues Particles travel distances Deposition occurs Particles settle in new places New rock formation!

Section Summary: Some Slow Natural Changes

Some Slow Natural Changes Summary Weathering of Rocks Physical and chemical breakdown of rocks into smaller pieces Erosion Movement of weathered particles by wind, water, and ice
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