Longshore currents are affected by the velocity and angle of a wave. When a wave breaks at a more acute (steep) angle on a beach, encounters a steeper beach slope, or is very high, longshore currents increase in velocity. ... This process, known as “longshore drift,” can cause significant beach erosion.
As the geographic and the magnetic north pole, the compass needle shows the opposite southern side and the geographic and the magnetic south pole the compass shows the north as build compass in the needle