Igneous Rocks Overview
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Questions and Answers

Which type of rock can any rock become if it is melted to a liquid and then cooled back into a solid?

  • Non-clastic sedimentary rock
  • Metamorphic rock
  • Igneous rock (correct)
  • Sedimentary rock
  • What type of rock is marble typically formed from?

  • Limestone (correct)
  • Quartzite
  • Gneiss
  • Igneous rock
  • Which rock is very hard, resistant, and can be taxing on construction equipment?

  • Igneous rock
  • Quartzite (correct)
  • Marble
  • Gneiss
  • What is the parent rock of quartzite?

    <p>Quartz-rich sandstone</p> Signup and view all the answers

    What process is required for a rock to become a metamorphic rock?

    <p>Change by heat and pressure but not melting</p> Signup and view all the answers

    Which of the following is NOT a characteristic of granitic composition?

    <p>Higher density than basaltic rocks</p> Signup and view all the answers

    What characteristic is common in gneiss and marble?

    <p>Banded appearance</p> Signup and view all the answers

    Which of the following compositions is associated with explosive volcanic activity?

    <p>Intermediate (or andesitic)</p> Signup and view all the answers

    Which of the following minerals is classified as a dark (or ferromagnesian) silicate?

    <p>Biotite mica</p> Signup and view all the answers

    What is the primary factor that influences magma behavior, such as viscosity and fluidity?

    <p>Silica content</p> Signup and view all the answers

    Which of the following statements about Bowen's reaction series is correct?

    <p>It shows the order of crystallization of minerals from a cooling magma.</p> Signup and view all the answers

    Which of the following statements about rhyolite is NOT true?

    <p>It contains less than 25% quartz.</p> Signup and view all the answers

    Which of the following best describes magma?

    <p>Liquid rock under the ground containing liquid, solids, and volatiles</p> Signup and view all the answers

    What is the difference between intrusive and extrusive igneous rocks?

    <p>Intrusive igneous rocks are formed from magma that cools below the ground, while extrusive igneous rocks are formed from magma that cools above the ground.</p> Signup and view all the answers

    What happens during the crystallization of magma?

    <p>The ions in the magma rearrange into an orderly pattern as the magma cools, forming silicate minerals.</p> Signup and view all the answers

    What is the term used to describe the overall appearance of an igneous rock based on the size, shape, and arrangement of its interlocking minerals?

    <p>Texture</p> Signup and view all the answers

    Which of the following statements about lava is true?

    <p>Lava is liquid rock above the ground.</p> Signup and view all the answers

    What are the three components that make up magma?

    <p>Melt, silicate minerals, and volatiles</p> Signup and view all the answers

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