8th grade science chpt 7

all land

earths crust and part of the upper mantle

theory that combined continental drift and seafloor spreading

hot, less dense material below the Earths crust rises toward the surface at mid-ocean ridges

the entire cycle of heating rising, cooling and sinking

boundary between two plates that are moving apart

Where two plates move together

area where oceanic plates subducts, or goes down into the mantle