CLEAN: Holland uses giant 'Sand Motor' to bolster coastline

The video discusses the gradual erosion of a large sand bar placed in the sea, which is expected to extend the beach over a long coastline. It highlights the natural movement of sand, with 60% expected to move north and 40% south, and notes that nature has already altered the coastline in ways not initially planned.

What is the primary effect of the sand bar placed in the sea?

• It stops the waves completely.

• It increases the sea level.

• It creates a new island.

• It erodes slowly over time.

How does the sand dispersal affect the coastline?

• It extends the beach.

• It creates a lagoon.

• It leads to the formation of cliffs.

• It causes the coastline to shrink.

What unexpected outcome is observed at the end of the sand dispersal process?

• The sand forms a mountain.

• The sand reaches the coast naturally.

• The sand turns into rocks.

• The sand disappears completely.

What percentage of the sand is expected to move north?

• 70%

• 30%

• 60%

• 50%

What is the expected percentage of sand moving south?

• 80%

• 20%

• 60%

• 40%