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Changes within the Earth

Changes within the Earth. Geology. Study of Earth’s physical structures and the processes that created them. Earth. Four zones Inner core Solid iron Outer core Liquid metals (iron and nickel) Mantle Most of Earth’s mass Channels of heat from core to crust Crust Up to 25 miles deep.

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Changes within the Earth

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  1. Changes within the Earth

  2. Geology • Study of Earth’s physical structures and the processes that created them.

  3. Earth • Four zones • Inner core • Solid iron • Outer core • Liquid metals (iron and nickel) • Mantle • Most of Earth’s mass • Channels of heat from core to crust • Crust • Up to 25 miles deep

  4. Earth’s Four Spheres • Atmosphere • Lithosphere • Hydrosphere • Biosphere

  5. Atmosphere • Envelope of gases surrounding Earth • 78% nitrogen • 21%oxygen

  6. Lithosphere • Solid crust of planet • Includes rock and soil • Forms continents, islands, and ocean floors

  7. Hydrosphere • All of Earth’s water • Solid • Liquid • Gas

  8. Biosphere • Includes all life forms • Plants • Animals • Overlaps other three spheres

  9. Plate Tectonics • Explains how forces inside Earth create landforms • Crust is divided into tectonic plates • 14 major • 38 minor • Continental drift • Process by which plates move • Melting • Bending • Breaking

  10. Pangea • http://www.classzone.com/books/earth_science/terc/content/visualizations/es0806/es0806page01.cfm?chapter_no=visualization

  11. Plate Movement • Three types • Spread apart • Rift valleys • Abyssal plains • Collide • Trenchs • Folds • Faults • Move laterally • Fractures • Earthquakes

  12. Ring of Fire

  13. Ring of Fire • http://grooveshark.com/#!/s/Ring+Of+Fire/3pfpnW?src=5

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