explain term the secondary waves?

Question

pls give me ex

Answer 1

Secondary waves travel slower than primary waves. Their average speed is 2.4 kilometres per second. Also called shear waves, S-waves create a side to side motion in the rocks through which they are travelling. Unlike the other earthquake waves, S-waves cannot travel through water or the liquid rock of the Earth's core layer. S- waves will rock building side-to-side.

Answer 2

A type of seismic wave, the S-wave, secondary wave, or shear wave, sometimes called an elastic S-wave, is one of the two main types of elastic body waves, so named because they move through the body of an object, unlike surface waves.

The S-wave moves as a shear or transverse wave, so motion is perpendicular to the direction of wave propagation: S-shaped, like waves in a rope, as opposed to waves moving through a slinky, the P-wave. The wave moves through elastic mediums, and the main restoring force comes from shear effects. These waves are divergenceless and obey the continuity equation for incompressible media.

You could get more information from the link below...

Answer 3

S-waves is slower. It usually travels through near-surface rocks at 2-5kms/sec. It is propagated by a shearing motion.

http://en.wikipedia.org/wiki/S-wave