plate Tectonics Flashcards
crust
the outermost shell of a rocky plant
Mantle
layer of molten rock between the crust and core
core
made up of mostly iron separated into the outer core molten and inner core solid
Tectonic plate
the layer of rock that makes up the outer part including the upper mantle crust lithospheric plats
continental drifts theory
the theory that contains gradually drifted over time to their present positions
Asthenosphere
A thin layer of earth about 150 thick at the border between the mantle and the crust
convection current
the process in which the hotter parts or gas or liquid ride of a has or the cooler denser parts sink.
convergent bonder
when two tectonic plates come to gether
mountain
uplift of crush crucial plates that form the elevated landmass
evergert volcanos
a vent or fissure ineraths sufrace throught wich magma and gass are elplelld
divert boundary
when tectonic plates spilt apart
transform boundary
when tectonic plates slide past each other.
Fault
It breaks in the crust. the movement causes seismic waves which produce earthquakes
Mid-ocean ridge
a lonh ridge of underwater volcanoes between two diverging oceanic plates.
Subduction zone
A place where one tectonic plate skins under another and melts also formed a trench.
