UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Core
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Crust
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Mantle
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None of the above
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Detailed explanation-1: -The outer core is the thickest layer of the Earth.
Detailed explanation-2: -The mantle At close to 3, 000 kilometers (1, 865 miles) thick, this is Earth’s thickest layer. It starts a mere 30 kilometers (18.6 miles) beneath the surface. Made mostly of iron, magnesium and silicon, it is dense, hot and semi-solid (think caramel candy). Like the layer below it, this one also circulates.
Detailed explanation-3: -The second layer of the earth is just below the crust. It’s called the mantle. The mantle is very thick: 1800 miles deep.
Detailed explanation-4: -Continental crust is about 35 km (22 mi) thick, but the large crustal root under the Tibetan Plateau is approximately 70 km (43 mi) thick. The thickness of the upper mantle is about 640 km (400 mi).