No need to wave the white flag. Use an animation to demonstrate the motion of seismic waves instead. A short animation shows the motion of longitudinal and transverse waves. Pupils also learn how the movement displaces the earth.

This demonstration shows that seismic waves propagate in all directions in the Earth from the source (not just in the direction of a single slinky). [5:13]

A middle school science teacher demonstrates how a slinky is a good analogy for P & S seismic waves. [5:13]