5.7.1 Weathering of Rocks

Last updated at April 25, 2026 by

What is Weathering of Rocks?

It is the physical and chemical breakdown of large rocks into smaller pieces over time.

Key Facts and Examples
  • Temperature changes cause rocks to expand and contract repeatedly .
Example: Hot days and cold nights make rocks crack and break apart
  • Growing tree roots push into rock cracks and break them apart .
Example: Tree roots growing through pavement cracks, splitting concrete slabs
  • Freezing water expands inside rock cracks and splits them open .
Example: Water freezing in mountain rock cracks during winter nights
  • Water and chemicals react with rock minerals and change their composition .
Example: Limestone caves formed by acidic water dissolving rock over centuries
  • Weathering eventually leads to soil formation from broken rock particles .
Example: Rich garden soil containing tiny pieces of weathered granite and sandstone
Weathering Process Large rocks exposed Temperature changes, roots, water Physical breakdown Cracks form and widen Chemical changes Water reacts with minerals Smaller pieces form Rock fragments created Soil formation begins!
Remove Ads Share on WhatsApp
CA Maninder Singh's photo - Co-founder, Teachoo

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. At Teachoo, he simplifies Accounts, Tax and GST with step-by-step examples so students can apply concepts confidently in exams and real life.

For an uninterrupted learning experience, students can use Teachoo Black to remove ads and focus better.