WorksheetsMr Griffin's Coastal protection quiz
Total questions: 27
Worksheet time: 14mins
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
If the photo is facing south, which direction is longshore drift working in?
west to east
east to west
south to north
north to south
What is the main disadvantage of using groynes?
They can starve other beaches of sediment
Look ugly and unnatural
Expensive
Which two coastal management structures can you see
Sea wall and gabions
Groyne and rock armour
Gabions and groynes
Sea wall and rock armour
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 are gabions?
A type of sea wall
Barriers at right angles to the beach
Boulders
Steel mesh cages filled with rocks
Why are hard engineering approaches less commonly used now? (Choose 2)
They are cheaper and don't last for long
They are expensive and involve high maintenance costs
They can cause accelerated erosion rates further down the coastline and look unnatural
Most coastal areas do not have valuable land and property to protect
Beach Nourishment
Which method replaces beach material that has been removed by erosion or longshore drift?
Gabions
sea wall
beach nourishment
revetments
Name the coastal defence strategy?
Groyne
Sea wall
Revetment
Gabion
Hard or soft engineering?
Soft Engineering
Hard Engineering
Name the coastal management technique.
Sea wall
Revetment
Rock armour
Gabions
Which coastal management technique can be expensive to obtain and transport boulders?
beach nourishment
rock armour
groynes
gabion boxes
Which coastal management method are wooden boxes that are built parallel to the coast?
revetments
gabion boxes
sea walls
groynes
Which coastal protection method is the MOST EXPENSIVE?
Gabion Boxes
curved sea walls
revetments
rock armour
Identify the coastal defense feature.
Sea wall
groyne
breakwater
barrages
Identify the coastal defense feature.
revetment
sea wall
groyne
breakwaters
Identify the coastal defense feature.
groyne
sea wall
gabion
revetment
Identify the coastal defense feature.
sea wall
revetment
gabion
groyne
Identify the coastal defense feature.
sea wall
revetment
rock armour
groyne
Which type of coastal management involves building artificial structures that try to control natural processes?
hard engineering
soft engineering
Which of the following statements does NOT apply to hard engineering coastal management strategies?
A natural approach to managing the coast
Last a short amount of time
Tend to be expensive
Increase erosion further along the coast
Why are coastlines important?
They are a place for people to live and work
They are a habitat for wildlife
They are a place for people to live and work and a habitat for wildlife
What is hard engineering?
Something that is difficult to achieve
Something that works with nature by using natural materials
Something that involves building structures
What is the dumping of new sand onto an eroded beach to restore it?
barrier island
beach nourishment
dredging
jetty
What are the main disadvantages of a sea wall?
Aesthetically displeasing
Encourages tourism, and thus litter
Creates strong backwash, causing erosion beneath the wall and very expensive
Expensive and encourages tourism
