EARTH SCIENCE
TECTONICS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lithosphere
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lower mantle
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outer core
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asthenosphere
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Detailed explanation-1: -Tectonic plates float on the asthenosphere. The asthenosphere is immediately below the top layer of Earth’s surface (lithosphere). The layer gets constant heat and radiation from the core of the Earth, which melts the rocks in the layer. The plates are placed on top of these (hot and melted) rocks and float worldwide.
Detailed explanation-2: -Under the continents is a layer of solid rock known as the upper mantle or asthenosphere. Though solid, this layer is weak and ductile enough to slowly flow under heat convection, causing the tectonic plates to move. Public Domain Image, source: Christopher S.
Detailed explanation-3: -They are floating on Earth’s mantle, a really thick layer of hot flowing rock. Even though plates move very slowly, their motion, called plate tectonics, has a huge impact on our planet. Plate tectonics form the oceans, continents, and mountains.
Detailed explanation-4: -The lithosphere is a thin layer of rock (average density of 2.7 grams per cc) and “floats” on top of a plastic-like layer called the asthenosphere.
Detailed explanation-5: -The crust of the Earth is broken into many pieces called plates. The plates “float” on the soft, plastic mantle which is located below the crust.