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2011-02-02 19:36:28
geology terms

geology notes
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  1. Earth is a planet of a dynamic body with many interacting parts.....
    Lithosphere, Hydrosphere, Biosphere, Atmosphere
  2. Lithosphere
  3. Hydrosphere
  4. Bioshphere
    living things
  5. Atmosphere
    oxygen, nitrogen
  6. How old is earth?
    4.56 billion yrs. (4.55 x 109 yrs. 4.55 x 1000000000 yrs)
  7. Four envelopes of the earth
    Lithosphere, Hydrosphere, Biosphere, Atmosphere
  8. Earth is constantly changing
    rapid and violent or gradual
  9. Scientific Method

    General research strategy based on
    • Observation
    • Experimentation
    • Ideas
  10. Inner Planets
    • Mercury
    • Venus
    • Earth
    • Mars
  11. Inner planets

    • small
    • made up of rocks and metals
  12. Outer Planets
    • Jupiter
    • Saturn
    • Uranus
    • Neptune
  13. Outer Planets

    • big
    • hydrogen and helium
  14. Definition of Ice
    Ice refers to the solid, frozen form of a volatile substance such as water and methane.
  15. Differentiation

    How did Earth evolve from a rocky mass to a living planet with continents, oceans, and an atmosphere?
    The transformation of a random mix of chunks of matter into a body in which the interior is divided into concentric layers that differ from one another both physically and chemically.
  16. Differentiation Fact
    Differentiation occurred early in Earth's history, when the planet got hot enough to melt.
  17. Differentiation Begins
    Heavy material sank to the interior.

    Lighter material floating towards the surface, bringing interior heat to the surface, where it could radiate into space.
  18. Earth's Crust
    • A thin outer layer. It is 5~(40-70) km thick.
    • Contains light materials with low melting temperatures. These materials are mostly melted compounds of the Elements
  19. Earth's Crust

    • Silicon (Si)
    • Aluminum (AI)
    • Iron (Fe)
    • Calcium (Ca)
    • Magnesium (Mg)
    • Sodium (Na)
    • Potassium (K)
    • Combined with oxygen

    other than iron, are among the lightest of the solid elements.
  20. Earth's Mantle
    • Between the core and the crust is the Mantle.
    • A region that is the bulk of the solid Earth (2900km thick)

    It consists of rock of intermediate density, mostly compounds of oxygen with magnesium, iron and silicon.
  21. Earth's Core
    Iron, which accounted for about one third of the primitive's planet material, is denser than the other elements and sank to form most of a central CORE.