Across
- 4. ridge that separates drainage basins
- 6. the saltines of water
- 7. place where groundwater flows naturally onto the surface
- 12. water that runs over the earth's surface
- 14. deep valley on the ocean floor
- 15. circular depression on the surface
- 17. river that joins another river of equal or greater size
- 18. organisms that live on the ocean floor
Down
- 1. lake created by placing a dam across a river
- 2. underwater mountain that is usually a volcano
- 3. a large stream of water flowing in bodies of water
- 5. table top of the groundwater layer
- 8. tiny organisms that live near the ocean surface
- 9. water that sinks into the ground
- 10. spring at which heated groundwater is blasted into the air
- 11. containing many spaces through which air/water can move
- 13. up and down motion of water caused by energy moving
- 16. free-swimming ocean animals