Earth Structure Structure Matter Matter Atoms Chemistryy click for 9 page to print Scales http www oceansatlas org unatlas about howoceans wereformed2 origin html Three Eras of Life Paleozoic 540 to 248 million years ago Old life trilobites trilobites horn corals Mesozoic 248 to t 65 million illi years ago Middle life dinosaurs Cenozoic htt http www msnbc msn com id 6817636 b id 6817636 65 million y years ago g to now New life age of mammals http www nature com doifinder 10 1038 438426a Earth from Space Earth Structure Lithospheric Plates Convection Plate Boundaries Crust diagram asthenosphere Lithosphere diagram Lithosphere types Continent Ocean Division Continent Ocean asthenosphere Continent Ocean Division Continent Ocean 71 of surface covered with ocean 40 of surface is continental continental crust Not all of the continental surface is dry Oceanic provinces Nearshore shallow CONTINENTAL SHELF Transition from continental crust to oceanic crust Continental slope Continental rise wedge of sediment deposited at base of continental slope Deep ocean ABYSSAL PLAINS OCEANIC RIDGES at divergence of plates plates Most prominent topographic feature on Earth OCEANIC TRENCHES at convergence Passive continental margin Earth Cycles Crustal Surface Features North American Continental Features Mt St Helens Blast Mt http www fs fed us gpnf volcanocams msh Mt St Mt St Helens Gibbous Earth Electron cloud Atom components New Cle Us Too many people in important positions say it incorrectly do not show your ignorance i b by d doing i th the same Contains nucleons protons positive total is atomic number of the element neutrons neutral The mass of the atom mass number nucleons Electron cloud Arranged in energy levels Electrons El t have h negative ti charge h Periodic Table Atom to Nucleus Elements of the Crust Oxygen O Silicon Aluminum Iron Calcium Sodium Potassium Magnesium O Si Al Fe Ca Na K Mg 47 47 28 8 5 4 3 3 3 2 Chemical Symbols First letter is capitalized Second letter if present is not capitalized SN is a compound of sulfur and nitrogen Sn is the element Tin Ionic Bonds with Dot Diagram Ions are not electrically neutral Ions are not like the atoms they are d i d ffrom derived Sodium Chloride structure Covalent Bonds Electrons are shared not donated as ions have done Unlike nonmetals form polar covalent molecules Polar molecules have charged g character Water Molecule Two Hydrogen One Oxygen Share electrons covalent bonds Oxygen and Hydrogen Atoms Water Molecule with covalent bonds Polar Water Molecule
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