Question

explain outer core in 40 words​

Answer 1

Earth's outer core is a fluid layer about 2,400 km (1,500 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface. ... Unlike the inner core, the outer core is liquid.

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Answer 2

Outer core in the earth's crust -

Explanation:

The expansion of the outer core is considered to be 2,900 km to 5,200 km from the ground, within the earth.

The seismic wave S does not enter this layer, so it is inferred that this layer must be composed of fluid.