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Forces of Change

Plate Tectonics, Weather, and Erosion

TermDefinition
Core The super-hot center of Earth, made of iron and nickel.
Mantle The thick, hot layer of rock beneath the crust.
Crust The thin, rocky outer shell of Earth.
Continental drift The theory that continents were once joined and have moved apart over time
Plate tectonics The movement of giant plates that make up Earth’s surface
Magma Molten rock beneath Earth’s surface
Subduction When one plate slides under another, often forming trenches or volcanoes.
Spreading When plates move apart and magma rises to form new crust.
Fold A bend in layers of rock, usually from pressure.
Fault A crack in Earth’s crust caused by plate movement.
Faulting The process of breaking and moving along a fault.
Weathering The breaking down of rocks by wind, water, or other forces.
Erosion The movement of rock and soil by wind, water, or ice.
Glacier A large body of moving ice.
Moraine A pile of rocks and debris left by a glacier.
Created by: Mr. Hine
 

 



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