Coastal Erosion and Deposition Quiz

What are the main sources of load in the sea?

• Eroded coastal rock debris

• Load dropped by rivers

• Weathered rock debris

• All of the above

Which of the following is NOT a way in which waves carry their load?

• Traction

• Saltation

• Suspension

• Convection

What is the process of sediment movement along the shore called?

• Longshore drift

• Coastal erosion

• Sedimentation

• Tidal movement

What happens to waves when they enter shallow water?

• They speed up

• They lose energy and deposit their load

• They continue with the same energy

• They change direction

Which of the following conditions is required for wave deposition?

• Waves enter deep water

• Waves enter a sheltered area

• The wind is strong

• None of the above

Where is the smallest sediment typically found during deposition?

• Backshore

• shore

• Nearshore

• Offshore

Which feature is created by wave erosion?

• Sandbar

• Sea arch

• Coral reef

• Beach ridge

What causes the collapse of an overhanging rock above a notch?

• The notch becomes too deep

• The rock becomes too weathered

• It loses support

• The wind speed increases

What is formed when wave erosion continues and finally the roof of the arch collapse?

• Sea cave

• Wave-cut platform

• Sea cliff

• Stack

Which of these is NOT a condition for the formation of coastal erosional landforms?

• Destructive waves

• Shallow offshore water

• A sheltered coast

• Presence of rock faults