Exploring Coastal Systems and Processes

What is the primary role of sand dunes in a coastal system?

• To provide a habitat for marine life

• To act as a natural barrier against coastal erosion

• To increase the salinity of coastal waters

• To promote the growth of salt marshes

Which of the following best describes dynamic equilibrium in a coastal environment?

• A state where coastal processes are constantly changing without any balance

• A balance between sediment being added and removed from the coastal system

• A situation where erosion is the dominant process

• A condition where deposition exceeds erosion

Salt marshes are typically found in which type of coastal environment?

• High energy environments

• Low energy environments

• Rocky coastlines

• Sandy beaches

What is the main factor that influences the formation of erosional landforms?

• The type of vegetation present

• The strength and direction of waves

• The amount of human activity

• The presence of salt marshes

Which process is responsible for the movement of sediment along the coast?

• Sub-aerial processes

• Longshore drift

• Fetch

• Wave refraction

What is the primary difference between constructive and destructive waves?

• Constructive waves have a stronger backwash than swash

• Destructive waves have a stronger swash than backwash

• Constructive waves build up beaches, while destructive waves erode them

• Destructive waves occur only during storms

How does wave refraction affect coastal erosion?

• It concentrates wave energy on headlands

• It disperses wave energy evenly along the coast

• It reduces the impact of waves on the coastline

• It increases sediment deposition in bays

What is the term for the distance over which wind blows across open water to generate waves?

• Fetch

• Drift

• Swell

• Surge

Which of the following is a depositional landform?

• Sea arch

• Stack

• Spit

• Cliff

What role does structural geology play in coastal systems?

• It determines the type of vegetation that can grow

• It influences the resistance of rocks to erosion

• It affects the salinity of coastal waters

• It controls the temperature of the coastal environment