Across
- 3. a large body of water surrounded by land.
- 4. large natural stream of water flowing in a
- 5. a piece of land surrounded by water.
- 10. mechanical function that operates through the force of liquid pressure.
- 11. relating to heat.
- 12. the height reached by the water.
- 13. a barrier constructed to hold back water and raise its level.
- 15. path for transmitting electric current.
- 16. the part of the land near the sea.
- 18. the expanse of salt water that covers most of the earth's surface.
Down
- 1. a piece of land almost surrounded by water or projecting out into a body of water.
- 2. energy that is sustainable.
- 3. a device used to convert electricity into light.
- 6. form of energy that an object or a particle has by reason of its motion.
- 7. an area of open land.
- 8. any substance consisting of matter.
- 9. hot during the day and cold at night.
- 14. a naturally raised area of land.
- 16. a large underground chamber.
- 17. loose granular material blanketing the beaches, riverbeds and deserts of the world.