Landforms formed by deposition

• What are coastal landforms caused by?

  Deposition
• How are beaches formed?

  By deposition
• What materials are deposited to form beaches?

  Sand, spits, bars, and dunes
• What is the role of longshore drift in coastal landforms?

  It moves sediment along the coast
• How do wind and waves affect coastal landforms?

  They can shape and erode the coastline
• What is a bar in coastal geography?

  A barrier formed by sediment deposition
• How do bars form?

  When two headlands join together
• What is a spit?

  A narrow landform extending from the coast
• What happens to the sediment behind a spit?

  It can form a lagoon
• How do dunes contribute to coastal ecosystems?

  They provide habitats for various species
• What is the significance of vegetation in sand dunes?

  It stabilizes the sand
• What happens to older dunes over time?

  They can migrate inland
• What are the characteristics of mature dunes?

  They can reach heights of up to 10 m
• What do depositional bars provide along the beach?

  They serve as habitats for organisms
• What are the main processes involved in the formation of coastal landforms?

  • Deposition of sediment
  • Longshore drift
  • Erosion by wind and waves
  • Formation of bars, spits, and dunes
• How do vegetation and dunes interact in coastal ecosystems?

  • Vegetation stabilizes sand dunes
  • Dunes provide habitats for plants and animals
  • Older dunes can migrate inland over time
• What are the ecological roles of bars and spits?

  • Provide habitats for various organisms
  • Influence sediment deposition patterns
  • Create lagoons and sheltered areas