Plate Tectonics Flashcards
Crust
The outermost shell of a rocky planet.
Mantl
Mantle Layer of molten rock between the crust and core
Core
Made up of mostly Iron. Separated in to the outer core mo;etm omd ommer core solid
Tectonic Plate
The layer of rock that makes ot the outer part of the Earth inclination the crust and upper mantle AKA lith
Continental drift theory
The theory that the continents gradually drifted over thome to their present positions
Asthenosphere
A thin later of Earth about 150 miles thick at the borer between the mantle than the crust
Convection current
The process in which the hotter parts of a gas or liquid rise to the top and the older denser parts sink
Convergent Boundary
When two tectonic plates come together
Mountains
Uplift of cristal plqrethqt ro4m 3l3fqg3e lqnemqwwew
Volcanoes
A vent or fissure in Earth’s surface through whits magma and gases are expelled
Divergent Boundary
When tectonic plates split apart
Transform Boundary
When tectonic plates slide past each other
Fault
Breaks in the crist. The movement causes seismic waves which produces earthquakes
Mid-Ocean Ridge
A long ridge of underwater foldanoes between
Subduction Zone
A place where one tectonic plate sinks under another and melts. Also forms a trench
