GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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W) the inner core
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X) the mantle
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Y) the outer core
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Z) the crust
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Detailed explanation-1: -It is the centre and the hottest layer of the Earth. The inner core is solid and made up of iron and nickel with temperatures up to 5, 500oC.
Detailed explanation-2: -Due to its immense heat energy, the inner core is more like the engine room of the Earth. Inner core is made basically out of iron and nickel and has a sweep of approximately 1, 220 km. Thickness in the core ranges between 12, 600−13, 000 Kg/m3. ∴ The Central and the Hottest part of Earth is called the Inner core.
Detailed explanation-3: -The interior of Earth is very hot (the temperature of the core reaches more than 5, 000 degrees Celsius) for two main reasons: The heat from when the planet formed, The heat from the decay of radioactive elements.
Detailed explanation-4: -The inner core is hotter than the outer core. However, in the outer core, the heat melts the core despite the amount of pressure present. In the case of the inner core, the effect of the pressure trumps the effect of heat and holds the core’s particles close together to form a tough solid.