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Top layer of the earth

• crust

• inner core

• oceanic crust 

• convection currents 

Innermost layer of the earth

• convection currents 

• inner core 

• basalt  

•  inner core

Location of thinnest portion of crust

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• oceanic crust 

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Thinnest layer of the earth

• crust

• inner core 

• oceaic crust

5. Thinnest layer of the earth

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• crust

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Current that causes warm liquid to rise and cool liquid to sink

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• convection currents 

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Layer of earth composed of liquid nickel and iron

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• outer core 

Layer of earth made of crust and top layer of mantle

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• lithosphere

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Scientist that first developed the theory of continental drift.

• nolan north

• bob heges

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• alfred wegner

Scientist in the 1950s that furthered the development of continental drift

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• harry hess

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