How does shadow zone emerge?

Explanation

The P-wave slows down the rigidity G is 0.0) and the wave is deflected towards the centre of the Earth. From 105° to 140° from the epicentre no P-waves are recorded. This creates a belt from 105° to 140° around the Earth called the P-Wave Shadow Zone. Although it is not illustrated think what would happen to an S-wave that just entered the outer liquid core. S-waves cannot travel through a liquid so from 105° to `105^(@)` degrees on either side of the epicentre no S-waves are recorded. This is the S-Wave Shadow Zone.