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Jabari
Techtonic Plates
8
Science
7th Grade
02/20/2014
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Term
plate tectonic theory
 Definition
crustal section (Plates) move around on mantle
Term
how are the plates moved
 Definition
Plates moved by convection currents
Term
Plate boundaries
 Definition
where plates meet
Term
Convergent
 Definition
plates come together
Term
Continental collision
 Definition
continental ( less dense) plates collide ( ex. – India and Asia)
Term
subduction
 Definition
denser oceanic plate goes under less dense continental.forms mountains
Term
Divergent
 Definition
plates spreads apart
Term
Seafloor spreading
 Definition
two oceanic plates move apart ( ex.- mid- Atlantic ridge )
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