28. This measures how much damage is caused by the earthquake based on observations. It is measured on a scale between I and XII. Mercalli Scale Mercalli Scale
34. Weathering What is the difference between weathering & erosion? Weathering is the breakdown of material caused by climactic conditions and weather action upon the rock. Erosion is the wearing away by constant forces related to, but not directly caused by temperature change or climactic conditions. Weathering creates the process we know of as Denudation.