Geography Chapter 2.1

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Geography Chapter 2.1

  1. 1. Inside and Out
  2. 2.  The solar system consists of the sun and eight known planets and celestial bodies that orbit the sun. The earth is the 3rd planet, 93 million miles from the sun in the solar system.
  3. 3.  Comets are spheres covered with ice and dust that leave trails of vapor as they race through space. Asteroids are large chunks of rocky material. There is an asteroid belt between Jupiter and Mars.
  4. 4.  The earth is a series of shells that surround one another. The center of the earth consists of the core, the mantle, and the crust. P. 28 diagram
  5. 5.  The core is the center of the earth and is made up of iron and nickel. The mantle surrounds the core and contains most of the earths mass. Magma is molten rock that forms in the mantle. The crust is the thin layer of rock at the earth’s surface.
  6. 6.  The atmosphere surrounds the earth and consists a layer of gases. The atmosphere contains the oxygen we breathe, protects the earth from radiation and space debris, and regulates weather and climate.
  7. 7.  The lithosphere is solid rock and contains the crust and uppermost mantle. The lithosphere forms the seafloor under the ocean. The continents are part of the lithosphere.
  8. 8.  The hydrosphere contains all the water elements on earth (seas, oceans, rivers, lakes, and water in the atmosphere). The atmosphere, lithosphere, and hydrosphere form the biosphere. The biosphere is the part of the earth where plants and animals live
  9. 9.  Developed in 1912 by Alfred Wegener States that earth was once one big supercontinent. Slowly divided and drifted apart. Pangea – All Earth

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