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asthenosphere    
n. 岩流圈

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  • What are the characteristics of the asthenosphere? - BYJUS
    Asthenosphere The asthenosphere is the upper zone of our Earth’s mantle Located below the lithosphere, approximately between 30 and 130 kilometres deep It is formed or composed of solid and semi – fused materials that allow continental drift The asthenosphere is composed of rock material It is formed by iron and magnesium silicates
  • . . .
    The lithosphere rides on the asthenosphere The asthenosphere is solid but it can flow, like toothpaste The asthenosphere and Lithosphere constitute the utmost concentric layers of our earth The asthenosphere encompasses much of the upper mantle of the earth Then, the lithosphere comprises the uppermost mantle as well as the overlying crust
  • Frequently Asked Questions related to Interior of Earth
    The asthenosphere is the upper portion of Mantle It is the chief source of magma that finds its way to the surface during volcanic eruptions The crust and the uppermost part of the mantle are called the lithosphere The major constituent elements of the mantle are Silicon and Magnesium and hence it is also termed as SIMA
  • What is Lithosphere? - BYJUS
    What is Lithosphere? The lithosphere is the rigid, outermost shell on Earth It is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of thousands of years or greater
  • Q. With reference to the asthenosphere, consider the following . . .
    The asthenosphere is a semi-solid or semi-molten, soft and fluid layer It is found below the lithosphere, between approximately 80 and 200 km below the earth’s surface It is responsible for driving plate tectonics motion The lithospheric plates are hard, rigid shells and sit on top of the asthenosphere
  • Earth’s Interior - BYJUS
    The upper position of the mantle of the earth is called the asthenosphere which is a weaker zone It is from this weaker zone the molten rock materials find their way to the surface The molten rock material found in the interior of the earth is called magma Once the magma reaches the earth’s surface it is called lava
  • Q. Consider the following statements: - BYJUS
    The asthenosphere is the layer of earth located in the upper portion of the mantle, beneath the lithosphere It is considered to be extending up to 400 km It is the main source of magma that finds its way to the surface during volcanic eruptions The characteristics of the asthenosphere are that it is composed of semi-fused and solid materials
  • What is plate tectonics? - BYJUS
    What is plate tectonics? Plate tectonics is the theory that Earth’s outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core
  • Watch the video below to understand the composition of each layer
    Asthenosphere ; Outer core ; Inner core ; Read more: Plate Tectonics Important Plate Tectonics Questions with Answers 1 The relative movement of the plates ranges from _____ annually 0 to 10 mm ; 0 to 1 mm ; 0 to 100 mm ; 10 to 1000 mm ; Answer: c) 0 to 100 mm Explanation: movement of plates ranges from 0 to 100 mm annually 2 Plate
  • Q. Consider the following statements with respect to the interior . . .
    The upper portion of the mantle is called the asthenosphere The word astheno means weak It is considered to be extending up to 400 km It is the main source of magma that finds its way to the surface during volcanic eruptions





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