Mechanism of Plate Tectonics
This is made up of plates that float on the asthenosphere.
What is the crust?
When plates come together they form this kind of boundary.
What is a convergent boundary?
These are found at the edge of a continent.
What are the continental margins?
This is formed when two oceanic plates come together and one slides under the other.
What is a subduction zone?
When continental and oceanic plates collide, this plate goes under.
What is the oceanic plate?
This rises up at the Mid-Ocean Ridge causing the seafloor to split.
What is Magma?
When plates move away from each other they create this plate boundary.
What is a divergent boundary?
This kind of continental margin occurs when plates meet at the edge of a continent.
What is an active continental margin?
The old crust melts forming this in the subduction zone.
What is a magma chamber?
Instead of volcanic islands, we have these forming at continental-ocean boundaries.
What are volcanoes?
These ride on the convection currents.
What are plates?
When plates slide past each other they form this kind of boundary.
What is a transform boundary?
This kind of continental margin occurs when the edge of a continent is in the middle of a plate.
What are passive continental margins?
These are formed at the subduction zone.
What are trenches?
These form at the edge of the continent due to compression.
What are folded mountains?
The hot magma causes this in the asthenosphere.
What are convection currents?
These are formed when plates come together.
What are boundaries?
Continental margins are made up of these.
What is the shelf, slope, and rise?
The magma chamber eventually finds its way to the surface forming these.
What are volcanic islands?
These are found at continental-ocean boundaries.
What are subductions and trenches?