Sec 3 Na Coasts

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Sec 3 Na Coasts

  1. 1. Coast
  2. 2. What is coast? <ul><li>It is the zone where the land meets and interacts with the sea. </li></ul><ul><li>The coast may be made up of landforms like </li></ul><ul><ul><li>Beaches </li></ul></ul><ul><ul><li>Headlands </li></ul></ul><ul><ul><li>cliffs </li></ul></ul>
  3. 10. Different coastal processes <ul><li>Erosion </li></ul><ul><li>Transportation </li></ul><ul><li>Deposition </li></ul>
  4. 11. Erosion <ul><li>Agent </li></ul><ul><ul><li>Wave (tides /current) </li></ul></ul><ul><li>Factors affecting size of waves </li></ul><ul><ul><li>Wind energy </li></ul></ul><ul><ul><li>Fetch </li></ul></ul>
  5. 12. Erosion <ul><li>Swash </li></ul><ul><li>Backwash </li></ul>
  6. 13. Transportation <ul><li>Agent </li></ul><ul><ul><li>Wave & current </li></ul></ul><ul><li>Longshore drift </li></ul>
  7. 15. Deposition <ul><li>Agent </li></ul><ul><ul><li>Wave (Swash) </li></ul></ul><ul><ul><li>Current (longshore current) </li></ul></ul>
  8. 16. Landform produced by coastal processes <ul><li>Beaches </li></ul>
  9. 17. Landform produced by coastal processes <ul><li>Spits </li></ul>
  10. 19. Landform produced by coastal processes <ul><li>tombolo </li></ul>
  11. 21. Landform produced by coastal processes <ul><li>Cliff </li></ul>
  12. 24. Landform produced by coastal processes <ul><li>Shore platform </li></ul>
  13. 27. Landform produced by coastal processes <ul><li>Headland and Bay </li></ul>
  14. 31. Landform produced by coastal processes <ul><li>Bay </li></ul>
  15. 32. Landform produced by coastal processes <ul><li>Wave refraction </li></ul>

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