Chemical and Mechanical weathering

define chemical weathering

alters the chemicals and inside structure that composes the rocks

define mechanical weathering

affects the physical structure of the rock but not its composition

exfoliation

occurs when rocks that form in high pressures on these rocks decreases and the expand and split into sheets

abrasion

caused when rocks rub together

thermal expansion

expansion of the rock is caused by heating

define weathering

process where rocks wear away, weaken, or crack

wedging

caused by substances that get in hole and cracks of the rock, and expand outward