When a wave reaches a beach or coastline, it releases a burst of energy that generates a current, which runs parallel to the shoreline and this type of current is called a longshore current as you can see here. Review the movement of the longshore current. What is the result of this sheet of water moving on and off the shore?

Question

Responses

A The longshore current removes the beach at the point of impact cutting into the shoreline.The longshore current removes the beach at the point of impact cutting into the shoreline.

B Because the longshore current runs parallel to the beach, it does not contribute to beach erosion.Because the longshore current runs parallel to the beach, it does not contribute to beach erosion.

C The sheet of water moves on and off the beach picking up and transporting beach sediment back out to sea.The sheet of water moves on and off the beach picking up and transporting beach sediment back out to sea.

D The longshore current pulls the sediment parallel to the beach and deposits it at the base where the current ends.

Answer 1

The best response regarding the movement of the longshore current and its effects is:

D The longshore current pulls the sediment parallel to the beach and deposits it at the base where the current ends.

Longshore currents play a significant role in transporting sediment along the coastline, contributing to the formation of features like sandbars and beach reformation.