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It Will Rock You!

Plate Tectonic Theory

QuestionAnswer
underwater mountain chain mid-ocean ridge
mountains formed on land from the compression as two continental plates collide fold mountains
proposed continental drift theory Alfred Wegener
super-continent Pangaea
plate boundary where plates slide past one another in opposite directions or one moves faster then the other in the same direction transform boundary
plate boundary where plates move away from each other divergent boundary
plate boundary where the plates collide convergent boundary
outer layer of the Earth (traditional or by composition) crust
inner layer of the Earth made of a liquid layer and a solid middle made mostly of iron (traditional or by composition) core
layer of the Earth below the crust and above the core (traditional or by composition) mantle
Earth layer made of the upper mantle and the crust lithosphere
Earth's plastic-like layer in which convection currents occur in asthenosphere
solid portion of the mantle mesosphere
liquid portion of the center of the Earth outer core
solid portion of the center of the Earth composed of mostly iron inner core
currents within the Earth's mantle caused by heat from the Earth's core convection cells
where one tectonic plate is pulled underneath another subduction zone
Southern portion of the super-continent Gondwanaland or Gondwana
Northern portion of the super-continent Laurasia
the ratio of the mass of an object to its volume density
switching of the Earth's North and South poles magnetic reversal
the idea that new oceanic lithosphere forms as magma rises towards the surface and solidifies sea-floor spreading
volcanic arc a chain of volcanic mountains above a subduction zone
trench a deep depression in the ocean floor
abyssal plain a relatively flat, featureless spot on the ocean floor
continental shelf ancient, weathered coastline of a continent
Created by: rdmonaghan
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