Weathering

There are two types of weathering: mechanical and chemical weathering.

Mechanical Weathering

In mechanical weathering, rocks are broken down into smaller pieces of rocks called sediments. Mechanical weathering is caused by natural forces such as earthquakes, landslides, and volcanic eruptions wherein rocks break because of force.

Chemical Weathering

Chemical weathering involves the exposure of rocks to certain naturally occuring acids that change these rocks into other material with new properties. Rocks that are exposed to flowing water, acid rain, and other naturally occuring acids like sulfuric acid from volcanic eruptions undergo weathering.