The dynamo theory explains the geomagnetic field as a result of the rotation of this region.
C-waves do not enter this region, and the K in PKP denotes the part of the waves that travel through it. This is the innermost of two regions whose lower boundary is marked by a Lehmann discontinuity, and its upper bound is named after Gutenberg. Refraction of P-waves here causes a (*) "shadow zone," and the S-waves cannot move through this region because they are transverse. The dynamo theory explains the geomagnetic field as a result of the rotation of this region. For ten points, identify this liquid region of the Earth found just below the mantle.
C-waves do not enter this region, and the K in PKP denotes the part of the waves that travel through it.
outer core (prompt on core) &lt;MS&gt;