Coastal Geomorphology Concepts

The video tutorial explains the formation and features of a depositional coastal feature known as a spit. It describes how spits form on discordant coasts with alternating bands of hard and soft rock, leading to bays and headlands. The process involves deposition and transportation of sediment due to prevailing winds and longshore drift. The video also covers the formation of hooks due to secondary winds and the development of sheltered areas and salt marshes behind spits. A real-world example is provided to illustrate these concepts.

What is a discordant coast?

• A coast with uniform rock types

• A coast with alternating bands of hard and soft rock

• A coast with only hard rock

• A coast with only soft rock

What is the primary process involved in the formation of a spit?

• Compaction

• Erosion

• Deposition

• Weathering

Why is a river important in the formation of a spit?

• It provides water for marine life

• It prevents erosion

• It helps in the transportation of sediment

• It creates waves

What causes the transportation of sediment along the coast?

• Tides

• Marine animals

• Human activity

• Prevailing wind

What is the process called that moves sediment along the coast?

• Sediment settling

• Wave action

• Tidal flow

• Longshore drift

What happens to the sediment when it reaches the far side of the headland?

• It deposits

• It erodes

• It dissolves

• It compacts

What is a secondary wind?

• A wind that blows in the same direction as the prevailing wind

• A wind that blows only at night

• A wind that changes direction occasionally

• A wind that is weaker than the prevailing wind

What feature forms on a spit due to the secondary wind?

• A bay

• A headland

• A dune

• A hook

What type of area forms behind a spit?

• A rocky shore

• A cliff

• A salt marsh

• A sandy beach

What contributes to the formation of a salt marsh behind a spit?

• Vegetation growth and sediment deposition

• Human intervention

• Strong winds

• High tides