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Plate Tectonics

Horizontales
Source of a volcano
Hypothesised that the continents were once joined. He could not provide evidence for how they would have moved.
A rigid layer made up of the uppermost part of the mantle and the crust. Brittle
A gentle slope at the bass of a steep continental slope.
Two plates move apart from eachother
what happens to cause a tsunami
theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core
A steep - sided formation that rises sharply from the ocean bottom.
Region of the ocean floor where old crust sinks into the earth's core and recycled
New crust that forms when magma erupting from ridge systems cools.
The process by which magma driven by convection currents is turned back by the lithosphere, moves laterally, and then descends, causing lateral movement of the earth's crust.
A long mountain range that forms along cracks on the ocean floor where erupting magma breaks through the earth's crust.
The edge of a continental landmass.
Verticales
The single continental landmass or supercontinent that existed about 400 million years ago. it was composed of a northern portion, Laurasia, and a southern portion, Gondwanaland.
The place at which two plate converge and one sub-ducts below the other.
two plates move towards eachother. oceanic crust is destroyed (subducted) at mose of these boundaries.
sections of the Earth's outer crus
two plates slide past each other.