Isaac's geography homework crossword

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Across
  1. 2. the distance travelled by waves or wind over water
  2. 3. when something gets slowly destroyed by natural sources
  3. 6. the collision of pebbles making them round and smooth
  4. 7. rocks such as limestone dissolving in water
  5. 10. the hurling of rocks against a cliff face
  6. 11. the movement of sediment up and down a beach
  7. 12. erosion of brick or rock by chemical reactions
  8. 13. when water drips into cracks, then eventually breaks it
  9. 14. when something heats up the contacts when it cools down; a layer then flakes off
  10. 16. when something alive breaks or cracks things
Down
  1. 1. a type of matter that settles at the bottom of water
  2. 4. a wave that has a stronger backwash
  3. 5. a wave that has a stronger swash
  4. 8. a tidal wave that moves up a beach
  5. 9. the most dominant source of wind
  6. 15. a tidal wave that moves down the beach