Forces That Shape The Earth

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by EMowry1102
Last updated 6 years ago

Discipline:
Science
Subject:
Earth Sciences
Grade:
7

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Forces That Shape The Earth

Wind Erosion- wears down rocks into sediment- lifts and carries sediments- deposits sediments in other locations- caused by wind, windstorms, tornadoes and sandstorms

Weathering & Erosion

Forces That Shape The Earth

Glacial Erosion- lifts and carries sediments, deposits sediments in form of till- deposits sediments when glaciers retreat and/or melt- carves landforms over time (fjords, kettle lakes, horns, etc.)Plate Tectonics- 3 types of boundaries:Convergent: Plates push together (mountains, volcanoes, trenches)Divergent: Plates pull apart (mid-ocean ridges, rifts)Transform: Plates slide past one another (earthquakes)- earthquakes occur at every type of boundary

Weathering: The breaking down of rocks, soils, and minerals as well as artificial materials through contact with Earth's atmosphere and watersErosion: The process by which soil and rock are removed from the Earth's surface by exogenetic processes such as wind or water flow, and then transported and deposited in other locations

Chemical weathering: The process by which the mineralogy of a rock adjusts to the near surface environmentMechanical weathering: The class of processes that causes the disintegration of rocks without chemical change

Water Erosion- wears down rocks and carries sediments- can destroy and re-shape land both slowly and quickly- forms lakes, rivers, and caves- caused by rain, floods, rivers, and tsunamis


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