Geology Final Exam: Intro to the Earth

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  1. How old is the Earth?
    4.6 billion years
  2. What are the 3 primary layers of the Earth defined by composition?
    • Crust
    •     -Ocean(Basalt)
    •     -Continental(Granite)
    • Mantel
    •     -Peridotite
    • Core
    •     -Iron & Nickel
  3. What are the 5 main layers of the Earth defined by physical properties?
    • Lithosphere - Solid Rock
    • Astenosphere - Melting
    • Mezosphere - Solid
    • Outercore - Liquid
    • Innercore - Solid
  4. List, describe, and give examples of the 3 rock types.
    • Igneous - Rocks that form as magma cools and crystallizes.
    •      -Granite, Peridotite

    • Sedimentary - Formed by the lithification of sediments
    •       -Sandstone, Limestone, Shale

    • Metamorphic - Formed from preexisting rocks by metamorphism(high temperature pressure)
    •        -Marble(Limestone), Slate(Shale)
  5. Draw the rock cycle.
    Magma>Cooling and Crystallization>Igneous Rocks>Weathering and Erosion>Sediments>Lithification(Compaction and Cementation)>Sedimentary Rocks>Metamorphism(High Temperature Pressure)>Metamorphic Rocks>Melting
  6. Define uniformitarianism?
    The geologic processes we see in action on Earth today have worked in much the same way throughout the geologic past.

Card Set Information

Geology Final Exam: Intro to the Earth
2013-12-14 00:41:36
Geology Exam Final Earth

Final Exam for Geology: Introduction to the Earth
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