Waterfalls

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Across
  1. 1. A river dropping over a cliff
  2. 6. Tiny pieces of rock that settle at the bottom
  3. 8. rate How fast water moves in a river
  4. 9. pool Deep hole at the base of a waterfall
  5. 11. Light fog made of water drops
  6. 12. Underground layer that holds water
  7. 14. Wearing away of rocks by water or wind
  8. 15. A small flowing body of water
  9. 16. The path a river follows
  10. 18. The moving water in a river
  11. 19. Solid rock beneath soil and sand
  12. 20. The force that pulls water downward
Down
  1. 2. Flat land beside a river that can flood
  2. 3. Water flowing over the land after rain
  3. 4. Low area that collects water
  4. 5. Dropping of sand, silt, or rocks in a new place
  5. 7. Tiny drops of water in the air
  6. 10. Narrow valley with steep sides
  7. 13. A small waterfall or series of waterfalls
  8. 17. The study of water on Earth