Shared Flashcard Set

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Plate Tectonics
Convergent - Divergent - Transform
12
Science
8th Grade
03/05/2013

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Cards

Term
Convergent Boundary
Definition
Move towards each other
How to remember:
Convergent crust collides
Term
Divergent Boundary
Definition
Move away from each other
How to remember:
Divergent divides
Term
Transform Boundary
Definition
Move past each other
How to remember:
It's the only one where they move past each other
Term
Land forms created by divergent boundaries
Definition
Rift valleys
and
Mid ocean ridges
Term
Divergent: continental-continental
Definition
The 2 pieces of continental crust slide away from each other and rift valleys are created
* Magma comes up from the mantle and creates new land
Term
Divergent: oceanic-oceanic
Definition
The 2 pieces of oceanic crust slide away from each other.
* Causes seafloor spreading
* Magma comes up from the mantle and creates new land
Term
Land forms created by convergent boundaries
Definition
Deep sea trenches
Volcanoes (island arc)
Mountains
Term
Convergent: oceanic-continental
Definition
The more dense oceanic crust sinks below the less dense continental crust * Called a subduction zone * Creates deep sea trench * Forms volcanoes
Term
Convergent: oceanic-oceanic
Definition
The older, cooler, more dense sinks below the younger, less dense crust just like oceanic-continental
* Creates deep sea trench
* Forms volcanoes
Term
Convergent: continental-continenal
Definition
The 2 pieces of crust slam into each other, neither sinking due to low density
*Creates mountains
Term
Land forms created by transform boundaries
Definition
Fault lines
Term
Transform
Definition
The plates slide past each other
* Creates earthquakes
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