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GEology Unit
vocabulary list
10
Science
9th Grade
10/04/2011

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Term
CRUST
Definition
The thin and solid outermost layer of the Earth above the mantle
Term
MANTLE
Definition
the layer of rock between the Earth's crust and core
Term
CORE
Definition
The central part of the Earth below the mantle.
Term
Oceanic Crust
Definition
wthis curst is in the ocean and made of baslt, the protion of earth's curst that is usually below the oceans and not associated with continental areas, thinner and higher in denstiy that continental crust and basaltic rather than granitic in composition.
Term

Continental Crust

 

Definition
The portion of the earth's crust that primarily contains granite, is less dense than oceanic crust, nad is 20-50 km thick
Term
Inner Core
Definition
Is the solid, dense center of our planet that extents from the core to the center of the Earth.
Term
Outer Core
Definition
Is the liquid layer of the Earth's core that lies beneath the mantle and surounds the inner core.
Term
Lithosphere
Definition
The outer most, rigid layer of the earth.
Term
Asthenosphere
Definition
Is a plastic layer of the mantle on which pieces of the lithosphere move.
Term
Mesosphere
Definition
Is the strong lower part of the mantle called the mesosphere.
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