Earth Science: The Earth's Layers
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Earth Science: The Earth's Layers

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Questions and Answers

Which layer of the Earth is the thinnest?

  • Mantle
  • Continental Crust
  • Oceanic Crust (correct)
  • Outer Core
  • What is the primary composition of the Outer Core?

  • Silicon and Magnesium
  • Granite
  • Basalt
  • Iron and Nickel (correct)
  • Which characteristic describes the Mantle?

  • Thin and brittle
  • Liquid metal
  • Solid and rigid
  • Hot, dense, semi-solid (correct)
  • What type of rock primarily composes Oceanic Crust?

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

    What type of Lithosphere corresponds to the thickest part of the Earth's crust?

    <p>Continental Lithosphere</p> Signup and view all the answers

    Study Notes

    The Earth’s Layers

    • The Earth is composed of four main layers: crust, mantle, outer core, and inner core.
    • Crust: The thinnest and outermost layer of the Earth, composed of solid rocks.
      • Two types of crust:
        • Oceanic Crust: Thinner, denser, and mostly composed of basalt (a dark-colored rock).
        • Continental Crust: Thicker, less dense, and mostly composed of granite (a light-colored rock).
    • Mantle: The thickest layer of the Earth, located between the crust and the outer core.
      • Composed primarily of iron, silicon, and magnesium.
      • Hot, dense, and semi-solid.
    • Outer Core: Liquid layer composed of iron and nickel.
      • Extremely hot (4,500 to 5,500 degrees Celsius).
      • Responsible for generating the Earth's magnetic field.
    • Inner Core: Solid ball of iron and nickel.
      • About 1,220 km thick.
    • Lithosphere: The rigid, outermost layer of the Earth, encompassing the crust and upper mantle.
      • Two types of lithosphere:
        • Continental Lithosphere: Includes the continental crust and upper mantle.
        • Oceanic Lithosphere: Includes the oceanic crust and upper mantle.

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    Description

    Explore the Earth's structure in this quiz focusing on its four main layers: the crust, mantle, outer core, and inner core. Understand the characteristics and compositions of each layer, as well as the unique properties that define our planet. Test your knowledge on how these layers contribute to geological phenomena and the Earth's magnetic field.

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