5 agents of Mechanical weathering
Published on Apr 01, 2016
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Animal actions
Animals that burrow in the ground-including moles,gophers,prairie dogs,and some insects-loosen and break apart rocks in the soil.
Photo by jinterwas
Freezing and thawing
Photo by paul.mcgreevy
When water freezes in a crack in a rock, it expands and makes the crack bigger.
Photo by HockeyholicAZ
The process of frost wedging also widens cracks n sidewalks and causes pot holes in the street
Photo by JeepersMedia
plant growth
Photo by Martin LaBar
Release of pressure
Photo by winterofdiscontent
As erosion removes material from the surface of a mass of rock, pressure on the rock is reduced
Photo by rogerwshaw
Abrasion
Photo by coloneljohnbritt
Sand and other rock particles that are carried by wind, water, or ice can wear away exposed rock.
Photo by Wolfgang Staudt
