Question

how do we know that code of the earth behaves like liquid while the Mantle up to a depth of 29000 kilometre behave like solid​

Answer 1

Explanation:

P-waves pass through both mantle and core, but are slowed and refracted at the mantle / core boundary at a depth of 2900 km. S-waves passing from the mantle to the core are absorbed because shear waves cannot be transmitted through liquids. This is evidence that the outer core does not behave like a solid substance.

• Hope it helps you

Answer 2

Answer:

It consists of dense silicate rocks. Both P- and S-waves from earthquakes travel through the mantle, demonstrating that it is solid. However, there is separate evidence that parts of the mantle behaves as a fluid over very long geological times scales, with rocks flowing slowly in giant convection cells.