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Science Vocab

Chapter 6- Plate Tectonics

Inner Core- The very center of the earth, ball of hot solid metals
Outer Core layer of liquid metals that surround the inner core
Mantle earth's thickest layer that surrounds the outer core
Crust outer most layer of the earth, thin layer of cool rock
lithospere earth's crust, and very top of mantle
asthenosphere a layer of hotter, softer rock in the upper mantle
tectonic plates large and small slabs of rock
continental drift the hypothisis that earth's continents move on the earth's surface
Pangea Wegener's idea of a super continent
The Theory of Plate Tectonics a theory stating that the earth's lithosphere is broken into large moving pieces which carry both continental and oceanic crust
Mid- Ocean ridges huge underwater mountain ranges
Sea floor spreading Molten rock rises through cracks in the oceanic crust. It then cools to form new oceanic crust. The old crust is pulled away to make room for new material.
Trenches deep canyons
Convection energy transfer by a movement of a material
convection current motion that transfers heat energy in the material
Slab Pull occurs where gravity pulls the edge of a cool, dense plate into the asthenosphere
Ridge Push occurs when material from a mid-ocean ridge slides downhill from a ridge
Created by: mtstep1