Igneous Rocks Quiz
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Questions and Answers

What are igneous rocks formed from?

  • Metamorphism of existing rocks
  • Compaction and cementation of organic matter
  • Cooling and solidifying of magma or lava (correct)
  • Weathering and erosion of sedimentary rocks
  • Where can igneous rocks be found besides volcanic mountains?

  • In riverbeds and lakes
  • On the surface of the moon
  • At the bottom of the ocean and deep underground (correct)
  • In desert areas
  • What is the theory that states the Earth's crust is broken up into plates called?

  • Seafloor spreading
  • Subduction zone theory
  • Continental drift
  • Plate tectonics (correct)
  • What are the massive sections of the Earth's crust called?

    <p>Tectonic plates</p> Signup and view all the answers

    What is the name given to magma that reaches the surface of the earth?

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

    How are tectonic plates described in relation to the Earth's layers?

    <p>They float on top of the hot, deep layers of the earth</p> Signup and view all the answers

    What leads to the formation of igneous rocks according to the text?

    <p>Movement of tectonic plates</p> Signup and view all the answers

    What type of tectonic plate movement is responsible for the formation of the Mid-Atlantic Ridge?

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

    Where does magma from below the Earth's crust have an opportunity to reach the surface and solidify into igneous rock?

    <p>Where tectonic plates move apart</p> Signup and view all the answers

    What type of tectonic plate movement can create a subduction zone?

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

    What is the Ring of Fire primarily known for in relation to tectonic plate movements?

    <p>Converging tectonic plates and volcanic activity</p> Signup and view all the answers

    What happens to the subducting plate in a subduction zone?

    <p>It is pushed into the hotter, deeper layers of the Earth where it melts</p> Signup and view all the answers

    What happens to magma as it makes its way through the opening created by diverging tectonic plates?

    <p>It meets cooler temperatures and solidifies into igneous rock</p> Signup and view all the answers

    What is the result of tectonic plates converging when one plate is pushed beneath another?

    <p>Formation of less dense melted rock that rises towards the surface</p> Signup and view all the answers

    What allows magma to solidify into igneous rock in the context of tectonic plate movements?

    <p>Meeting cooler temperatures</p> Signup and view all the answers

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