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Transcript
Constructive and Destructive Forces on Earth 1. Uniformitarianism- the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes (Erosion and Deposition) 2. Earth Processes dynamic actions that occur on and below the Earth's surface 3. Geology the study of the Earth and Earth system processes 4. Geologist a person who studies rocks, minerals, Earth's processes and the evolution of the Earth 5. Sediments sand, silt, clay, minerals, and bits of rock that are eroded and deposited 6. Erosion the process of MOVING sediments from one place to another by wind, water, or ice (Grand Canyon) 7. Weathering an Earth process that breaks pieces of rock into smaller pieces 8. Mechanical weathering the type of weathering in which rock is physically broken into smaller pieces 9. Chemical weathering the process that breaks down rock through chemical changes 10 .Oxidation a chemical change in which a substance combines with oxygen 11 .Deposition the process by which sediments settle out of the wind, water or ice that carried it (Dunes, Delta, Floodplain) 12 .Delta land formed when a river slows down and deposits sediments as it flows into a lake or an ocean 13 .Floodplain land that has been formed by the deposition of sediments that occurs when the river floods 14 .Constructive processes that build up Earth's material (ex. Deposition) 15 .Destructive processes that break down Earth's material (ex. Erosion) 16 .Abrasion the grinding away of rock by other rock particles carried in water, ice or wind 17 .Mass movement any one of several process by which gravity moves sediment (landslide, mudflow) 18 .Glacier a slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles 19 .Ice Wedging process that splits rock when water seeps into cracks, then freezes and expands 20 .Permeable characteristic of a material that is full of tiny, connected air spaces that water can seep through 21 .River Channel the riverbed that is carved into the land 22 .Stream a body of flowing water