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Igneous Rock Classification loading

Igneous rocks are grouped based on silica content and whether the rock is extrusive or intrusive.

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Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
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  • Read
    Igneous Rock Classification

    Igneous Rock Classification

    by CK-12 //basic
    How to classify igneous rocks.
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    This indicates how strong in your memory this concept is
  • Video
    Types of Igneous Rocks

    Types of Igneous Rocks

    by CK-12 //basic
    Igneous rocks are found under and above the earth's surface and are formed by millions of years of solidifying. Learn more about ingenious rocks in this educational geology video.
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  • Downloadable Quiz
    Igneous Rock Classification Quiz - MS ES

    Igneous Rock Classification Quiz - MS ES

    by CK-12 //basic
    Reviews the classification of igneous rocks by composition and cooling rate.
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  • Real World Application
    Rock Stars

    Rock Stars

    by CK-12 //basic
    Not very many rocks are famous. A few are Plymouth Rock in Massachusetts, the Blarney Stone in Ireland, and Ayer's Rock in Australia.
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  • Real World Application
    Yosemite Rocks!

    Yosemite Rocks!

    by CK-12 //basic
    The steep walls of Yosemite Valley are made of granite. A batholith born of subduction cooled deep in the crust.
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