Science review 12/15/11
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21 terms
Terms | Definitions |
|---|---|
 Oxidation | Chemical Ex: statue of liberty turned green |
| Frost action | Ice widens and deepens cracks in rocks Mechanical |
| Lichen | Blue green alge that secretes acidic liquid Chemical |
| Exfoliation | Mechanical Removing top layer |
| Acid rain | Chemical Wears away at rocks when rains |
| Gravity | Landslides,glacier movement pulls objects down |
| Root pry | Mechanical roots from plants squeeze through/around rocks to grow |
| Abrasion | Rock grinds against other rock |
| High temp and high humidity | Chemical weathering will happen faster |
| Greater surface aera | Faster weathering occours |
| Occurs AFTER rock is weathered | Erosion and deposition |
| Rocks in desert | Abrasion and deflation |
| Soil is made by | Rocks weathering away |
| Layers of soil | Topsoil(includes humus) Subsoil Partily weathered Parent/bed rock |
| Deflation | Small particles are carried by wind further than large particles which get Dropped and roll along the ground |
| Abrasion | Small particles carried by wind wear away the rock wich is then carried by wind |
| Slow down erosion | Sandbags- slow down flow of water Fences-decrease wind erosion Gravel/large stones where water drains |
| Erosion | Breaks down rock and other materials on earths surface |
| Deposition | Agents of erosion lay down sediments in new locations |
| Sediments | Material moved by erosion |
| Mass wasting | Includes sevral processes which include gravity moving sediments down a hill |
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