Coastal Erosion Quiz

What is coastal erosion?

• The process of building up sand and sediment along the coast

• The wearing away of land and the removal of beach or dune sediments by wave action, tidal currents, wave currents, or drainage

• The creation of new landforms along the coast

• The planting of vegetation to stabilise the coastline

Which of the following is a type of coastal erosion?

• Hydraulic action

• Photosynthesis

• Sedimentation

• Evaporation

What is the primary purpose of groynes in coastal protection?

• To increase the speed of water flow

• To trap sand and prevent longshore drift

• To create new beaches

• To remove sediment from the coastline

Which of the following is a soft engineering method for managing coastal erosion?

• Sea walls

• Rock armour

• Beach nourishment

• Groynes

What is the main disadvantage of using sea walls for coastal protection?

• They are inexpensive to build

• They can cause increased erosion further down the coast

• They are made of natural materials

• They promote the growth of marine life

Which type of coastal erosion involves the chemical breakdown of rocks?

• Hydraulic action

• Abrasion

• Attrition

• Solution

What is managed retreat in the context of coastal erosion management?

• Building barriers to prevent erosion

• Allowing certain areas to flood and erode naturally

• Adding sand to beaches

• Constructing groynes

Which of the following is an example of hard engineering in coastal protection?

• Beach nourishment

• Dune stabilisation

• Sea walls

• Managed retreat

What is the main goal of dune stabilisation?

• To increase tourism

• To prevent the inland movement of sand dunes

• To create new dunes

• To remove vegetation from dunes

Which of the following is a natural factor that can contribute to coastal erosion?

• Construction of buildings

• Planting of vegetation

• Wave action

• Beach nourishment