Unit 7 - Plate Tectonics

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22 Terms

1
convergent boundary
A plate boundary where two plates move toward each other.
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2
divergent boundary
A plate boundary where two plates move away from each other.
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3
subduction
One plate going under another plate
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4
transform boundary
A plate boundary where two plates move past each other in opposite directions
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5
mountians
converging continental crust and continental crust
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6
volcanos
converging continental crust and oceanic crust; subduction zone
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7
ocean trench
converging oceanic crust and oceanic crust; subduction zone
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8
rift valley
diverging continental crust
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9
ocean ridge; ocean basin
diverging oceanic crust
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10
earthquake
movement along transform boundary
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11
hot spot
An area where magma from deep within the mantle melts through the crust above it
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12
supervolcano
Massive volcano that can produce unbelievably enormous, but rare, eruptions.
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13
crust
Earth's outermost layer.
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14
mantle
the layer of the earth between the crust and the core
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15
core
Center of the earth
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16
lithosphere
A rigid layer made up of the uppermost part of the mantle and the crust.
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17
Pangaea
large, ancient landmass that was composed of all the continents joined together
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18

Alfred Wegener

scientist who came up with the continental drift theory
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19
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transform boundary

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20
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convergent subduction boundary

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21
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divergent boundary

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22
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convergent boundary

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