coasts

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Across
  1. 3. A steep and near-vertical
  2. 4. Water moves up the beach
  3. 6. frequency Number of wave crests
  4. 10. The distance of wind travels over seas to form
  5. 11. Process which sediments are hurled against the coast
  6. 12. A spit that connects an offshore island
  7. 14. A bridge of rock above an opening
  8. 17. waves Strong swash and a weak backwash
  9. 18. An area hollowed by wave action at the base of a cliff
Down
  1. 1. A pillar of rock in the sea left behind after an arch collapses
  2. 2. Daily alternative rise and fall in sea level
  3. 5. Energy from wind blowing across seas and ocean
  4. 7. waves Strong backwash and a weak swash
  5. 8. The area where the land meets the sea
  6. 9. drift Combined effect of longshore current and beach drift
  7. 11. When rock particles carried by waves rub
  8. 13. A wide coastal indentation found between headlands
  9. 15. Water moves back to the sea from the beach
  10. 16. Arrangement and composition