Water systems

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Across
  1. 6. Ice formed by falling snow
  2. 8. Not an island but rises from the ocean seafloor
  3. 9. Mountains that erupt with lava
  4. 12. A variety of different organisms in an area
  5. 13. Beavers make______
  6. 15. What are waves caused by?
  7. 17. A place between the US and Canada that is known for three waterfalls
  8. 19. A green a low-lying wetland that is usually covered by water. Where does Shrek live?
  9. 20. A laundry detergent brand
  10. 21. The motion of water
Down
  1. 1. The Titanic was struck by an______
  2. 2. Land that filters and cleans freshwater
  3. 3. There are five great _______ of North America
  4. 4. Japanese word for a big wave is__________
  5. 5. When liquid changes to water vapour , it is called_________
  6. 7. Fish that eat dead animals and plants in the water are called_______
  7. 10. An area of low lying ground beside a river
  8. 11. The surface of science water
  9. 12. The ______ ______ is a located between Jordan and Israel
  10. 14. A natural low point or hole in the ground
  11. 16. A white crystal substance that is used for seasoning and preserving food
  12. 18. An underwater volcano