UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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innercore
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Outercore
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Either A or B
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None of the above
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Detailed explanation-1: -The Earth’s core is divided into two layers, a solid inner core, and a liquid outer core. The Inner Core (D) (1216 km) is solid nickle-iron alloy . The Outer Core (C) (2270 km), is a molten nickle-iron alloy.
Detailed explanation-2: -The inner core is solid, the outer core is liquid, and the mantle is solid/plastic. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases.
Detailed explanation-3: -Earth has three layers: the crust, the mantle, and the core. The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.