Weathering is the breakdown of rocks and minerals on the earth's surface. Many things cause this to happen. There are two types of weathering: Mechanical (physical) Chemical
What is mechanical weathering? It is when rocks break down into smaller pieces because of some physical force. The rock does not change chemically, it just gets smaller! Sometimes called PHYSICAL weathering.
Photo by A. Criminger Freezing and thawing is breaking these rocks apart! Ice Wedging