There are 2
main types of weathering; physical or mechanical weathering, and chemical weathering.
Weathering- the combined action of physical and chemical processes
that disintegrate (mechanical fragmentation) and decompose (chemical alteration)
rock at or near the Earth's surface. Products of weathering usually remain in
the vicinity of their original location. Weathering is an essential preliminary
step in the formation of soils and sedimentary rocks by making it easier
for erosional agents to remove and transport rocks.