Chemical /Physical Weathering

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Presentation transcript:

Chemical /Physical Weathering Student name (C) Copyright 2014 - all rights reserved www.cpalms.org

Physical Weathering This type of weathering physically breaks down rock into smaller pieces (C) Copyright 2014 - all rights reserved www.cpalms.org

Chemical Weathering This type of weathering involves breaking down rock through chemical changes (C) Copyright 2014 - all rights reserved www.cpalms.org

Physical Weathering http://commons.wikimedia.org/wiki/File:Limestone_on_shale.jpg http://en.wikipedia.org/wiki/Weathering (C) Copyright 2014 - all rights reserved www.cpalms.org

(C) Copyright 2014 - all rights reserved www.cpalms.org Chemical Weathering http://commons.wikimedia.org/wiki/File:Mosul_Dam_sinkhole.jpg http://commons.wikimedia.org/wiki/chemical_ (C) Copyright 2014 - all rights reserved www.cpalms.org

Conclusion The physical weathering process causes rocks to crumble either from changes in temperature, absorption of water or intense pressures. Plants and animals can also play a role in physical weathering. For example: animal burrows, tree roots cracking concrete (C) Copyright 2014 - all rights reserved www.cpalms.org

Conclusion (con’t) The chemical weathering changes the materials that make up rock and soil. For example : dissolving limestone can create sinkholes (C) Copyright 2014 - all rights reserved www.cpalms.org