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| Description: o Geosphere - Solid Earth - Extends from surface to the center of the planet - Largest of Earth’s four spheres o Solid Earth - Based on compositional differences, it consists of the crust, mantle, and core - Divisions of the outer portion are based on how materials behave o Crust - Earth’s relatively thin, rocky outer skin - Continental crust - Less dense, many rock types - Granitic - Oceanic crust - Dense, basaltic rock o Mantle - Solid, rocky shell - More than 82 percent of Earth’s volume - Upper mantle - Lithosphere – entire crust and uppermost mantle - Asthenosphere – relatively soft layer - Lower mantle - Very hot, strengthens with depth o Core - Iron-nickel alloy - Outer core - Liquid layer - Earth’s magnetic field - Inner core - Solid Picture Stats: Views: 266 Filesize: 218.37kB Height: 922 Width: 1194 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39341 |