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Unformatted text preview: Earth Geology 1 out of 5 Terrestrial Planets Early surface was made of rocky material Seismic waves vibrations through the interior and surfact of an earthquake tells us whats inside earth All terrestial worlds have layered interiors Core highest density material, consisteing of nickel and iron, located in central core Mantle rocky material of moderate density - surrounds the core with cilicon, oxygen and other elements Crust lowest density rock (granite or basalt) - forms thin crust (worlds outer skin) we have two cords, solid inner core, and molten outer core lava rises up from a narrow layer of rock in upper mantle that is only partially molten lithosphere outer layer of a planet cool and rigid rock - higher temp below, - thick lithosphere can prevent reuptions and creation of mountain ranges differentiation process by which gravity sperates materials by density - layered interiors tell us that all planets underwent differentiation, thus they must have all once been hot inside for rock and metal to melt and separate by...
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This note was uploaded on 03/24/2008 for the course ASTRO 1102 taught by Professor Squyres,s/margot,j during the Spring '07 term at Cornell University (Engineering School).
- Spring '07
- Solar System