Question

what if the earth core freeze and then what will happen​

Answer 1

Answer:

When the molten outer core cools and becomes solid, a very long time in the future, the Earth's magnetic field will disappear. When that happens, compasses will stop pointing north, birds will not know where to fly when they migrate, and the Earth's atmosphere will disappear.Scientists know this because the shock waves made by earthquakes can be recorded on the other side of the Earth – and we would not expect to see them there if the inner core was also molten

Explanation:

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Answer 2

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If you remove the core of a rocky planet, the planet would collapse. ... all of this surrounds a solid inner core, made of mostly iron and nickel. The inner core is about 1200 km in diameter, a little smaller than the moon. you do not even want an empty space 70% of the size of the Luna at the center of earth...When the molten outer core cools and becomes solid, a very long time in the future, the Earth's magnetic field will disappear. When that happens, compasses will stop pointing north, birds will not know where to fly when they migrate, and the Earth's atmosphere will disappear.....

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