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Plate Tectonics

Vocabulary

TermDefinition
Pangaea all the continents were once part of a super continent called.
Continental drift continents are in constant motion on the surface of earth..
Mid-Ocean ridges the mountain ranges in the middle of the oceans.
Seafloor spreading is the process by which new oceanic forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
Normal polarity at state in which magnetized objects such as compass needles will orient themselves to point north.
Magnetic reversal occurs and the magnetic field reverses direction.
Reversed polarity a state in which magnetized objects would reverse direction and orient themselves to point south.
Plate tectonics earth's surface is made of rigid salads of rock ,or plates,that move with respect to each other.
Lithosphere the cold and rigid outermost rock layer is called
Divergent plate boundaries forms where two plates separate
Transform plate boundary forms where two plates slide past each other.
Convergent plate boundary form where two plates collide.
Subduction the denser plate sinks below the more buoyant plate in a process is called .
Convection the circulation of material caused by differences in temperature.
Ridge push rising mantle material at mid-ocean ridges creates the potential for plates to move away from the ridge with a force called.
Slab pull as a slab sinks,it pulls on the rest of the plate with a force called.
Created by: kailanih
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