There are two main types of weathering:

* Physical weathering: This involves the breakdown of rocks into smaller pieces without changing their chemical composition. Examples include:

* Frost wedging: Water freezes in cracks, expands, and widens the cracks.

* Thermal expansion and contraction: Rocks expand when heated and contract when cooled, leading to stress and eventual breakage.

* Abrasion: Rocks are rubbed against each other by wind, water, or ice, causing them to wear away.

* Chemical weathering: This involves the breakdown of rocks through chemical reactions. Examples include:

* Dissolution: Some minerals dissolve in water, like limestone.

* Oxidation: Minerals react with oxygen, like the rusting of iron.

* Hydrolysis: Water reacts with minerals, changing their composition.

Weathering is a crucial process in the formation of soil and the creation of landforms.