Coastal Management Quizziz

Groynes are an effective technique because they slow down the process of what occurring?

• Transportation

• Longshore drift

• Nearshore drift

• Deposition

How do groynes work to protect the coastline?

• They trap sediment by slowing down longshore drift, thereby building up a wide beach

• They absorb wave energy so that the cliffs behind are protected

• They act as a hard rock barrier at foot of cliff to provide a buffer again the sea

• They allow rapid longshore drift along the coastline

A recurved sea wall is effective because it...

• Is not particularly expensive
• Stops erosion of the coastline
• Deflects wave energy back out to sea

What is the main disadvantage of using groynes?

• They can starve other beaches of sediment
• Aesthetically displeasing
• Expensive

Which one of the following is a soft engineering technique?

• Groynes
• Dune stabilisation
• Rip rap
• Revetments

Sand is being dumped or removed?

• Removed 
• Dumped 

What is the dumping of new sand onto an eroded beach to restore it?

• barrier island
• beach nourishment
• dredging
• jetty

What type of areas are typically subjected to the management technique of managed retreat?

• Low value areas e.g. farmland
• Low lying areas
• Housing estates
• High value retail areas

Which two coastal management structures can you see

• Sea wall and gabions

• Groyne and rock armour

• Gabions and groynes

• Sea wall and rock armour

Which of these is NOT a soft engineering strategy?

• Beach nourishment

• Beach reprofiling

• Sand dune regeneration

• Gabions