plate tectonics- the litosphere moves slowly over the mantle
Continental Drift- is when the continents drift
Pangaea- is a super continent that began to break apart 200 million years ago
_Asthenosphere- lies below the lithosphere. is 80 and 200 km below the surface
Lithosphere- the outter rocky part of a planet.
Mid oceanic ridge- an underwater muntain ridge
rift valleys- formed on a divergent plate boundry. it is a linier shaped lowland
subduction- takes place at a convergant boundry. a techtonic plate moves under an other techton