ENV 151 Study Guide - Quiz Guide: Granite Dome, Spheroidal Weathering, Igneous Rock
13 Dec 2018
School
Department
Course
Professor
Document Summary
Chapter 4: list examples of earth"s external and internal processes. External processes weathering, mass wasting, and erosion. Mechanical weathering increases the surface area of a rock by physically breaking it down. This leaves more of the surface available for chemical weathering processes: explain how water can cause mechanical weathering. Water in its liquid form can cause mechanical weathering if it is running water by wearing down the surface of the rock. When large amounts of igneous rock that formed deep underground are exposed by erosion, a process called sheeting occurs, where concentric slabs break loose. This is partially due to the reduction in pressure the rock is under at the surface. Plant roots can grow into rock fractures and further break it apart. Burrowing animals may also break down the rock. Carbonic acid is formed when carbon dioxide dissolves in water. This can occur in the atmosphere and when water percolates through soil.
