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Unformatted text preview: -Silicate and other light-metal rocks-Thinnest, coolest, and most rigid layer-Constantly changing – only inner planet (natural processes) How do we know all this? Earth’s earthquakes! (2 types of waves) 1) P-waves (pressure) – slinky-like (left and right)-Travel through solid, liquid, and plastic 2) S-waves (shear/sideways) – like a string (up and down)-Only travel through solid and plastic, NOT LIQUID (can’t go through OUTER CORE) Differentiation – process by which heavier/denser materials sink to center of Earth while lighter ones rise up-Creates different layers; responsible for oceans and atmosphere...
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This note was uploaded on 02/17/2010 for the course PHY 115 taught by Professor Weinbeck during the Spring '09 term at BC.
- Spring '09