Sea defences

Identify the coastal defense feature.

• Sea wall

• groyne

• breakwater

• barrages

What is the main disadvantage of using groynes?

• cheap

• Prevent longshore drift

• The wood can rot over time.

Identify the coastal defense feature.

• sea wall

• revetment

• gabion

• groyne

What is an advantage of groynes?

• They stop the process of longshore drift

• They don't last very long

• They involve the loss of land

Identify the coastal defense feature.

• Sea wall

• groyne

• breakwater

• barrages

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

• Nearshore drift

• Longshore drift

Identify the coastal defense feature.

• sea wall

• revetment

• artificial reef

• groyne

Which form of coastal management is best at reducing longshore drift?

• Sea wall

• Barrages

• Groynes

What coastal management in in the photo?

• Rock armour

• Manage retreat

• Beach nourishment

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