Across
- 2. Technique that uses sound propagation to navigate, communicate, or detect objects usually underwater
- 4. The process in the water where water flows down into the nearest body of water
- 5. Its mass per unit volume
- 7. The process where water molecules stick to each other
- 8. The amount of dissolved salts in sea water
- 10. The measure of how acidic or basic something is
- 11. A measure of the warmth and coldness of an object or substance
- 13. The production of light by a living thing
- 14. The outer boundaries of a river system
Down
- 1. A half enclosed area where freshwater and saltwater meet
- 3. Water molecules that stick to other materials
- 6. The deepness of the water in the soil or rock
- 9. Substances that enable living things to grow
- 10. When the water can't go through the open pores in rock or sediment
- 12. A portable breathing device for free swimmers