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