There were 5 boys in the family and not even David Pelzer knows why his mother singled him out. His father Stephen was a firefighter and an alcoholic and instead of standing up for his son, he deserted the family making things worse for David.There is a book out called A child called 'IT.This is what his mother would call him, and according to David's recollection his mother told him that if she hadn't abused him so severely she would have killed him and buried him out in the backyard.here were 5 boys in the family and not even David Pelzer knows why his mother singled him out. His father Stephen was a firefighter and an alcoholic and instead of standing up for his son, he deserted the family making things worse for David.
Even though the velocity of S wave is less than that of P wave, the former (S wave) is more destructive. P and S waves cause the rocking motion of the earth. 3. L or Surface Waves reach the earth's surface after P and S waves. Surface wave travels with a lower velocity than the other two around the surface of the earth. Surface wave is very destructive. There are two types of L waves: (i) Raileigh Waves (ii) Love Waves. Raileigh waves are characterised by the motion of particles in elliptical orbits in the plane of propagation. In the second kind of waves i.e. love waves, the motion of particles is horizontal and at 90Â° angle of the direction of ...
As the P waves pass from outer core to inner core, some of the P wave energy gets converted into shear wave energy and then when the shear wave comes out of inner core, some of ITS energy gets converted back to a new P wave.