Earth's Spheres

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Earth's Spheres

  1. 1. The Earth as a System Earth’s Spheres
  2. 2. Earth’s Spheres <ul><li>Atmosphere </li></ul><ul><li>Hydrosphere </li></ul><ul><li>Lithosphere </li></ul><ul><li>Biosphere </li></ul><ul><li>Cryosphere </li></ul><ul><li>Anthroposphere </li></ul>
  3. 3. Atmosphere <ul><li>The gaseous sphere that covers the Earth. </li></ul><ul><li>Consists of a mixture of gases composed primarily of nitrogen, oxygen, carbon dioxide, and water vapor. </li></ul>
  4. 4. Hydrosphere <ul><li>All of the water on Earth </li></ul><ul><li>71% of the earth is covered by water and only 29% is terra firma </li></ul>
  5. 5. Lithosphere <ul><li>The Earth's solid surface, often called the crust of the earth. It includes continental and oceanic crust as well as the various layers of the Earth's interior. </li></ul>
  6. 6. Biosphere <ul><li>All life on earth, including man, and all organisms. </li></ul><ul><li>The life zone on our planet distinguishes our planet from the others in the solar system. </li></ul>
  7. 7. Cryosphere <ul><li>The portion of the Earth's surface where water is in a solid form </li></ul><ul><li>Snow or ice: includes glaciers, ice shelves, snow, icebergs, and arctic climatology </li></ul>
  8. 8. Anthroposphere <ul><li>Man and his direct ancestors, hominids. </li></ul><ul><li>The human population, its buildings, dams, and other constructions. </li></ul>
  9. 9. Interconnected Spheres <ul><li>Spheres are closely connected </li></ul><ul><li>Changes are often chain reactions </li></ul><ul><li>A change in one sphere results in changes in others - called an event </li></ul><ul><ul><li>Forest fire destroys plants in an area </li></ul></ul><ul><li>Interactions between spheres </li></ul><ul><ul><li>No plants => erosion </li></ul></ul><ul><ul><li>Soil in water => increased turbidity </li></ul></ul><ul><ul><li>Turbidity => impacts water plants/animals </li></ul></ul>
  10. 10. Event <=> Sphere <ul><li>Causes & Effects </li></ul><ul><li>Interactions </li></ul><ul><li>Event <=>Sphere </li></ul><ul><li>Sphere<=>Sphere </li></ul>

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