Igneous Rocks Quiz
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Questions and Answers

What are igneous rocks formed from?

  • Pressure and heat on existing rocks
  • Cooling and solidifying of magma or lava (correct)
  • Weathering and erosion of sedimentary rocks
  • Deposition of organic matter
  • Where can igneous rocks be found?

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

  • Continental drift theory
  • Plate tectonics (correct)
  • Crustal fracturing theory
  • Tectonic plate splitting theory
  • 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

    What leads to the formation of igneous rocks?

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

    What is the process of igneous rock formation linked to?

    <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

    What happens when oceanic crust is pushed below continental crust at a subduction zone?

    <p>Igneous rock formation</p> Signup and view all the answers

    What is the result of the convergence of tectonic plates in the Ring of Fire area?

    <p>Extensive volcanic activity</p> Signup and view all the answers

    What allows magma to solidify into igneous rock at diverging tectonic plate boundaries?

    <p>Cooler temperatures</p> Signup and view all the answers

    What happens to the subducting plate in a subduction zone?

    <p>It melts</p> Signup and view all the answers

    What is the process that occurs when tectonic plates bump up against each other and create a subduction zone?

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

    What is responsible for the formation of igneous rocks at diverging tectonic plate boundaries?

    <p>Magma reaching the surface</p> Signup and view all the answers

    What is the characteristic of oceanic crust that leads to its subduction below continental crust?

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

    Study Notes

    Igneous Rocks Formation

    • Igneous rocks are formed from magma or lava, which is molten rock from the Earth's interior.
    • Igneous rocks can be found at the Earth's surface, including volcanic regions, mountain ranges, and the ocean floor.

    Plate Tectonics

    • The theory that states the Earth's crust is broken up into plates is called plate tectonics.
    • The massive sections of the Earth's crust are called tectonic plates.

    Magma and Volcanic Activity

    • Magma that reaches the surface of the Earth is called lava.
    • The formation of igneous rocks is linked to volcanic activity and plate tectonics.

    Tectonic Plate Movement and Igneous Rock Formation

    • The process of igneous rock formation is linked to the movement of tectonic plates, particularly at diverging and converging plate boundaries.
    • At diverging tectonic plate boundaries, magma rises to the surface and solidifies, forming igneous rocks.
    • The type of tectonic plate movement responsible for the formation of the Mid-Atlantic Ridge is divergent motion.
    • At converging plate boundaries, oceanic crust is pushed below continental crust at a subduction zone, resulting in the formation of igneous rocks.
    • The convergence of tectonic plates in the Ring of Fire area leads to the formation of volcanoes and igneous rocks.

    Subduction Zones

    • At subduction zones, the subducting plate is subjected to increasing heat and pressure, causing it to melt and form magma.
    • The process that occurs when tectonic plates bump up against each other and create a subduction zone is called subduction.
    • The characteristic of oceanic crust that leads to its subduction below continental crust is its density, which is heavier than continental crust.

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    Test your knowledge of igneous rocks with this fun and educational quiz. Learn about the formation process, characteristics, and types of igneous rocks while having a blast.

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