Watery World Crossword

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Across
  1. 5. small particles float along in a river
  2. 7. the action of plants and animals breaking down rock
  3. 8. when air is compressed in the cracks in rocks and they break up
  4. 11. weak acid in the river/ sea water dissolves certain types of rock
  5. 14. large boulders are rolled along the river
  6. 15. the wearing away of rock NOT involving river/sea water
  7. 16. dissolved particles travel along in the river
Down
  1. 1. the zigzag movement of material along a beach
  2. 2. medium rocks bounce along the river
  3. 3. weak acid in the rain water breaks down certain types of rock
  4. 4. also known as freeze thaw- where water in a crack expands as the temperature drops. This repeats until the rock breaks up
  5. 6. when rocks scrape against other rocks breaking up
  6. 9. when whole sections of land slide downhill creating steps
  7. 10. when water in the soil moves downhill at a different rate to soil leading to ripples on the surface
  8. 12. when rocks bang into each other and break up
  9. 13. the wearing away of rock due to river/sea water