A wave which retreats after hitting the coast is called? by Sunday | Aug 11 | Geography WAEC | 0 comments A. backwash B. swash C. underflow D. trough E. wavelength Correct Answer: Option B – swash Users Also Read These:The change of the direction of a wave-front because…A piece of substance of specific heat capacity…The sketched graph represents a progressive wave…Its total energy just before hitting the ground is?A certain wave has a speed of 20ms-1. If the…