Layers Of Earth/Plate Tectonics

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  • 1/8 Questions

    The lithosphere and crust are the outermost layers of the Earth.

    • True
    • False
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About This Quiz

Explore the fundamental structure of Earth and the dynamics of plate tectonics in this engaging quiz. Learn about the layers from the crust to the core and understand how tectonic plates move over the asthenosphere, shaping our planet.

Plate Tectonics Quizzes & Trivia

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  • 2. 

    The inner core is the most dense.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The inner core is the most dense because it is composed mostly of solid iron and nickel. The immense pressure at the center of the Earth causes these materials to be compressed, resulting in a higher density compared to the outer layers. Additionally, the inner core's high density contributes to its solid state despite the extremely high temperatures.

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  • 3. 

    Which layer of the Earth is above the asthenosphere?

    • Mantle

    • Outer core

    • Lithosphere/crust

    • Inner core

    Correct Answer
    A. Lithosphere/crust
    Explanation
    The lithosphere/crust is the layer of the Earth that is above the asthenosphere. The asthenosphere is a semi-fluid layer of the mantle, and the lithosphere/crust is the rigid outermost layer of the Earth. This layer includes the Earth's crust and the uppermost part of the mantle.

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  • 4. 

    The asthenosphere is a semisolid layer of rock materials.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The asthenosphere is a semisolid layer of rock materials. This is true because the asthenosphere is located beneath the lithosphere and is composed of partially molten rock materials. It is a plastic-like layer that allows the lithospheric plates to move and is responsible for plate tectonics and volcanic activity.

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  • 5. 

    Which below is the name of the major tectonic plate in the United States of America?

    • African Plate

    • Eurasian Plate

    • South American Plate

    • North American Plate

    Correct Answer
    A. North American Plate
    Explanation
    The North American Plate is the correct answer because it is the major tectonic plate that covers most of the continent of North America, including the United States of America. Tectonic plates are large pieces of the Earth's lithosphere that float on the semi-fluid asthenosphere below, and they are responsible for shaping the Earth's surface through movements such as earthquakes and the formation of mountains. The North American Plate is bounded by other major plates, such as the Pacific Plate and the Eurasian Plate.

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  • 6. 

    What is plate tectonics?

    • The theory explaining how the Earth rotates and revolves around the Sun

    • The theory explaining that the lithosphere/crust is broken into pieces and is moving over the semisolid asthenosphere

    • The theory explaining how the mantle, outer core, and inner core have extreme heat and pressure.

    • The theory explaining the density of the Earth's layers.

    Correct Answer
    A. The theory explaining that the lithosphere/crust is broken into pieces and is moving over the semisolid asthenosphere
    Explanation
    Plate tectonics is the theory that explains how the Earth's lithosphere, or crust, is divided into several large and small pieces called plates, which are in constant motion over the semisolid asthenosphere. This theory helps to explain various geological phenomena such as earthquakes, volcanic activity, and the formation of mountain ranges. It provides a framework for understanding the dynamic nature of the Earth's surface and the interactions between different plates.

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  • 7. 

    Which sequence shows the layers of Earth in order from the surface to the center of Earth?

    • Inner core, outer core, mantle, crust

    • Inner core, outer core, crust, mantle

    • Crust, mantle, inner core, outer core

    • Crust, mantle, outer core, inner core

    Correct Answer
    A. Crust, mantle, outer core, inner core
    Explanation
    The correct answer is "crust, mantle, outer core, inner core." This sequence shows the layers of Earth in order from the surface to the center. The crust is the outermost layer, followed by the mantle, then the outer core, and finally the inner core.

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  • 8. 

    What elements compose most of the Earth's lithosphere/crust?

    • Iron and nickel

    • Silicon and oxygen

    • Helium and magnesium

    • Sulfur and nickel

    Correct Answer
    A. Silicon and oxygen
    Explanation
    The Earth's lithosphere/crust is primarily composed of silicon and oxygen. Silicon and oxygen are the two most abundant elements in the Earth's crust, making up more than 75% of its composition. These elements combine to form minerals such as quartz and feldspar, which are common in the Earth's crust. Iron and nickel are found primarily in the Earth's core, while helium and magnesium are present in smaller quantities in the crust. Sulfur is also found in the Earth's crust, but it is not as abundant as silicon and oxygen.

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 07, 2014
    Quiz Created by
    E050265
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