Hard And Soft Engineering

Question 1

What is a sea wall?

Answer 1

A long wall, hard engineering,
+Good protection from floods
- Very expensive

Question 2

What are groynes

Answer 2

Long pillars perpendicular to the beach
+Prevents longshore drift
- Need lots of them, look unnatural

Question 3

What is beach nourishment?

Answer 3

Sand is taken from other places such as the sea bed to restore the beach, soft engineering
+ Looks natural,
- Expensive, takes away sand from other places

Question 4

What are gabions?

Answer 4

Cage filled with rocks to prevent erosion
+cheaper, cages absorb energy
-cages break, less efficient

Question 5

What is rock armour?

Answer 5

Rocks placed to protect shoreline structures from coastal processes
+cheap, quick to build, long lasting
-disrupts access to beach, need regular maintenance