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6 Plate Tectonics

Study Guide

WordDefinition
Lithosphere rigid part of the earth, made up of upper mantle and crust
Asthenosphere plastic like layer the plates move/float on
Faults cracks in the rock, movement causes earthquakes
Waves disturbances that carry energy through matter and space
Plate Boundaries edges where plates meet
Shearing force that pushes something in 2 different directions (not tension)
Convection any material moved because of differences in density
Buoyant force of water balancing the force of gravity
Isotasy earth's lithosphere floats on the asthenosphere
Subduction happens when one plate slides under another plate
Mountains are made when 2 continental plates collide, pushing each other up
Compression happens when the 2 ends of a plate squeeze/push together
Tension occurs when the 2 ends of a plate are pulled in opposite directions
Earthquakes are made when 2 plates slide/rub against each other
Volcanoes are made when plates go through subduction or lava piles up over time
Fault Blocked Mountains are made when the tilted rock layers separate by fault, pull apart because of tension
Upwarped Mountains are made when the forces inside the earth push up and out of the earth's crust
Folded Mountains are made when the rocks layers buckle and fold because of compression
Outer Core is a liquid (molten metal/iron)/stops seismic waves
Inner Core hottest part, 5000 degrees Celsius/ made of solid iron
Crust has the oceans, continents/ can be thick in some areas or thin in other areas
Mantle largest layer/ moves slowly
Created by: mrios
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