Beach Preservation

Beach Preservation

Wait... what does preservation mean?

Help me define that word, so we can get going!!!!!

What is an area that people are

constantly working to keep 

from eroding?

Share you answers with me!!!

Multiple Choice

What is erosion?

• The movement of sediment

• The breaking of sediment

• The dropping of sediment

Multiple Choice

What is sediment?

• the process of rocks being broken down and carried away

• bits of rock, sand, and silt caused by the weathering of rocks

• the top layer of the soil

• enormous rocks carried by wind, water, ice/glaciers, or gravity

Multiple Choice

Which of these is an example of erosion?

• Sand being dropped at the mouth of a river creating a delta

• Rain breaking down rock

• Waves moving sand away from the coastline or beach area

• All of the above

What are some ways we can save the beach from erosion?

Beach Restoration

• Beach restoration is the is the process of replacing sand on the

  beaches.

• This only solves the problem temporarily. Erosion continues to take place.

Jetties also help with beach erosion

• A jetty is a structure that extends from the shore into a body of water in order to influence the currents or tide, often to protect a coastline.

• Jetties protect the coastline by acting as a barrier against erosion from currents, tides, and waves.

Seawalls also help with beach erosion

• Seawalls prevent the natural landward migration of an eroding beach.

• Seawalls redirect the waves back to the sea, curbing potential damage and erosion over time.

Let's Think Back to Our Gizmo Activity

What is another way that we could slow down beach erosion?

Multiple Choice

Which of the following is an example of beach restoration?

• removing human objects from a beach

• creating a larger beach by removing grasses

• building a jetty to trap extra sand on the beach

• adding sand to a beach that is eroding

Multiple Choice

Which student's idea is correct about beach restoration?

• Eva said that beach reclamation is the process of building fences to stop erosion from ocean waves.

• Frank replied that it is the process of adding new sand to shorelines that have been eroded.

• Greta responded that it is the process of digging trenches to limit weathering from the ocean.

• Han declared that beach reclamation is the process of removing debris from weathered shorelines.

Multiple Choice

What is the best way to prevent erosion along a coastline?

• remove native vegetation to hold the sand in place

• build hotels along the beach to boost tourism

• plant native vegetation to hold the sand in place

• remove the old shells along the beach

Multiple Choice

How does a jetty help to protect a coastline from erosion?

• It prevents the sea level from rising and removing sediment.

• It becomes a barrier against waves and currents.

• It deposits sand created by the weathering of the rocks.

• It forces sand to stay on the beach by increasing waves.

Multiple Choice

What is this a picture of?

• Dam

• Levee

• Jetty

• Seawall

Multiple Choice

The picture shows beach grasses that have been planted along the beaches of many coasts. What problem are the beach grasses most likely intended to solve?

• How can the erosion of coastlines be reduced?

• How can the pollution of the seas be prevented?

• How can the diversity of marine life be improved?

• How can the level of rising sea water be decreased?