tectonic Flashcards
crust
The outermost shell of a rocky plantet
mantal
layer of molten rockbetween the crust and core
core
mostly made up of iorn sepeerated into the outor core molten and the inner core solid
tectonic plates
the layer of rocks that make up the outer parts of earth like the crust and the upper mantal linspher plates
continental drift theory
the theory that the continents over time drifted to there now places
coverson current
the prosses in witch the hotess parts of a gas or luiqud rise to the top and the cooler dencer part at risk
cunvegent boundrys
when two tectonic plates come together
mountains
rocks getting pushed up
volcanos
a vent or fusion in earths surface though witch magma and gasses are expeled
divegent boundres
when tectonic plates split apart
asthenospher
a thin layer of earth 150 miles thick at the border between the mantal and the crust
transform boundry
where two plates slide past each other
fault
breaks in the crust the movent cause sisment wave witch makes earth quicks
mid- ocean ridge
a long ridge of under water vocanos between two diveging oceanic plates
subduction zone
a place where 1 tectonic plate sinks under another 1 and melts