These winds push the water as they go and cause the currents. Scientists are still studying the effects of currents on the earth. Wind also causes waves. The wind pushes against the surface of the water causing waves. When the crest of a wave tumbles into foam, a breaker forms.
Breakers carry sand away from the beach.
After many years, the force of waves can change the shape of a shoreline. Put about an inch of water in the other end of the pan. Gently rock the pan to simulate wave action as the water strikes the sand. Observe what happened during the experiment. Today we have discussed ocean currents.