titonics Flashcards
crust
the outer molten shell of rocky planet
mantle
layer of molten rock between the crust and core
core
made of mostly iron separated into the outer core and inner core
tectonic plate
the layer of rock that makes up the outer part of the earth including the crust upper and mantle
continently drift theory
the the thery that the continentats were one
asteosphere
a thin layer between the mantle and crust
montins
Uplift of crustal plates that form elevated landmasses.
volcanos
A vent or fissure in Earth’s surface through which magma and gases are expelled.
divergint plates
When tectonic plates split apart.
transform
when the plates slide past each other
fault
breaks in the crust. the movement causes seismic waves which produces earthqaukes.
mid-ocean ridge
a long ridge of underwater valcanoes between diverging oceanic plates
subduction zone
when one titonic plate goes under anouther one
rift vally
a long narow valley between two divrging continentaln plates
Convection Current
The process in which the hotter parts of a gas or liquid rise to the top and the cooler, denser parts sink.
