Plate Tectonics: A scientific theory that explains the pieces of the lithosphere, move and change shape
Continetal Drift: A hypothesis that says , that the continents once formed in a landmass that broke up and drifted the locations apart.Pangea: A continent that was formed 300million years ago , then started to break up in 250 million years ago
Asthenosphere: A solid layer of the mantle underneath the lithosphere made up of mantle rock that flows slowly that allows tectonic plates to move on top of it.
Lithosphere: The outer layer of the earth , that consist the crust and the rigid upper part of the mantle
Mid-Ocean Ridge: A undersea steep mountain chain , narrow valley at its center it forms magma that rises from the asthenosphere, and creates a oceanic lithosphere as the plate tectonics move apart
Rift Valleys: A moutain range created by a gealogic rift
Subduction: A convergent boundary witch is when a tectonic plate moves under another tectonic plate and sinks in the mantle as a plate converge.