Which of the following statements describe what happens to sediment when a longshore current meets a jetty? Select all that apply.
a. Sediment is deposited on the down-current side of the jetty because water moves slower in this location.
b. Sediment is eroded on the up-current side of the jetty because the water is starved of sediment in this location.
c. Sediment is deposited on the up-current side of the jetty because water moves slower in this location.
d. Sediment is eroded on the down-current side of the jetty because water is starved of sediment in this location.



Answer :

The correct option in this case is Sediment is eroded on the down-current side of the jetty because water is starved of sediment in this location.

Hence, Option A is correct.

  • Sediment is a naturally occurring material that is broken down by weathering and erosion processes and is then transported by the action of wind, water, or ice on the particles or by the force of gravity acting on the particles.
  • Sandstone, limestone, and shale are examples of sedimentary rocks. These rocks are frequently formed from sediments carried by rivers and deposited in lakes and oceans. When sediments are buried, they lose water and become cemented together to form rock.
  • Erosion and weathering degrade boulders and even mountains into sediments like sand and mud. Dissolution is a type of weathering, specifically chemical weathering. Water that is slightly acidic slowly wears away stone in this process. These three processes produce the building blocks for new sedimentary rocks.

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