1) process by which rocks are broken down by chemical reactions a) Mechanical Weathering b) Chemical Weathering 2) process of rocks, soil, and minerals being slowly broken down or broken apart by the Earth's environment a) Mechanical Weathering b) Chemical Weathering 3) Abrasion - scraping away the surface a) Mechanical weathering b) Chemical Weathering 4) Ice wedging - freezing and thawing of water a) Mechanical Weathering b) Chemical Weathering 5) Plant roots grow into cracks and break apart a) Mechanical Weathering b) Chemical Weathering 6) Burrowing - animals scrape and dig the terrain a) Mechanical Weathering b) Chemical Weathering 7) Temperature change - cold to hot expanding and contracting a) Mechanical Weathering b) Chemical Weathering 8) Gravity - falling rocks or debris, compression a) Mechanical Weathering b) Chemical Weathering 9) Hydrolysis - water softens minerals in rocks a) Mechanical Weathering b) Chemical Weathering 10) Oxidation - iron combines with oxygen making rust a) Mechanical Weathering b) Chemical Weathering 11) Carbonation - carbon dioxide in rainwater creates carbonic acid a) Mechanical Weathering b) Chemical Weathering

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