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Geology Exam 1

QuestionAnswer
What is Geology Geo=Earth; logos=discourse.. study of composition, processes, and history
Moho change in the crust-mantle boundary.. by definition: seismic velocity discontinuity
Continental Crust 35-70 km thick, mosty composed of silica
Oceanic crust 7-10 km thick (less silica)
Lithosphere -(plates)Rigid "strong", mantle below lithosophere
Athenosphere (below plates)"weak" sphere, mantle below lithosphere
Mantle 80% of the Earthiron & magnsium filled (periodite)
Outter core (responsible or magnetic field)liquid iron alloy
Inner core Solid iron alloy
Created by: xoxolenzy
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