Dynamic Earth I: Earth's History & The Rock Cycle (E.S.)

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a.obeso.III
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311658
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Dynamic Earth I: Earth's History & The Rock Cycle (E.S.)
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2015-11-18 00:19:43
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Test 11/19 100 pts
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  1. What do fossils tell us about?
    Fossils tell us about Earth’s history
  2. Where are the oldest fossils found?
    In the bottom layer
  3. Explain how an igneous rock forms.
    When magma cools & hardens.
  4. Explain how a sedimentary rock forms.
    When sediments collect and cement together.
  5. Explain how a metamorphic rock forms.
    When an existing rock changes with heat & pressure.
  6. This rock [pic] is Shale and is considered a Sedimentary rock.
    Explain how you can tell this rock is sedimentary.
    How was this rock made?
    • It is made of mud (sediments).
    • It was formed when sediments collected and cemented together.
  7. This rock [pic] is Conglomerate and is considered a Sedimentary rock.
    Explain how you can tell this rock is sedimentary.
    How was this rock made?
    • It is made of pebbles (sediments).
    • It was formed when sediments collected and cemented together.
  8. This rock [pic] is Granite and is considered an Igneous rock.
    Explain how you can tell this rock is igneous.
    How was this rock made?
    • It has large crystal sizes.
    • It was formed when magma cooled and hardened.
  9. This rock [pic] is Obsidian and is considered an Igneous rock.
    Explain how you can tell this rock is igneous.
    How was this rock made?
    • It has a dark color and is glassy.
    • It was formed when magma cooled and hardened.
  10. This rock [pic] is Gneiss and is considered a Metamorphic rock.
    Explain how you can tell this rock is metamorphic.
    How was this rock made?
    • It has bands (stripes) from the intense pressure.
    • It was formed when an existing rock changed due to heat and pressure.
  11. Be able to fill in a blank version of the following picture.
    Okay.

  12. Be able to list the "layers" of rock in this picture from oldest to youngest.
    Okay.

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