Rocks, coasts and weathering

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Across
  1. 3. smaller wave stronger swash than backwash
  2. 4. type of weathering involving loss of rock strength
  3. 7. rocks getting smoother and rounder
  4. 8. erosion caused by rocks hurled against the cliff
  5. 10. rock that is evidence for a past warm ocean
  6. 11. rocks being dissolved by acids or salts
  7. 12. an igneous rock type used as kitchen tops
  8. 13. movement of water back down the beach
  9. 15. rock formed by heat and pressure
  10. 16. rock formed by cooling magma
Down
  1. 1. the type of action created by the force of water
  2. 2. rock formed by compaction and cementation
  3. 5. type of weathering involving salt or acid
  4. 6. type of weathering involving trees or animals
  5. 9. larger wave with stronger backwash than swash
  6. 14. movement of water up the beach
  7. 15. a metamorphic rock type used in bathrooms