Managing Coasts – Hard Engineering

What is the main purpose of a sea wall?

• To provide a walkway

• To stop the sea

• To enhance the view

• To reduce noise pollution.

Sea walls are often built with a curved face to reflect ______ back into the sea.

• Sand

• Waves

• Fish

• Boats

Which of the following is a disadvantage of rock armour?

• Cheap to produce

• Can be used for fishing

• Can be very obtrusive

• Provides interest to the coast.

Rock armour is often used for ______.

• Swimming

• Fishing

• Sunbathing

• Surfing

What is a key advantage of gabions?

• Expensive to produce

• Improve drainage of cliffs

• Look attractive immediately

• Last forever.

Gabions can eventually become ______ and merge into the landscape.

• Rusty

• Vegetated

• Invisible

• Transparent

Groynes are used to create a wider ______.

• River

• Beach

• Road

• Path

Which of the following is a disadvantage of groynes?

• Create a wider beach

• Provide useful structures

• Less expensive

• Increase erosion elsewhere.

What is the cost of a sea wall per metre?

• £500

• £1000

• £1500

• £2000

Rock armour is usually brought by ______ to the coast.

• Plane

• Train

• Barge

• Truck