Across
- 2. A group of parts that work together as a whole
- 7. Dark, fine-grained rock
- 9. Forces that wear down or destroy landmasses
- 12. uppermost part of the mantle
- 13. The ability to do work
- 14. thin envelope of gases that forms Earth's outer layer
- 15. Light colored rock that has coarse grains
Down
- 1. Forces that construct or build up mountains
- 3. middle layer of Earth, very hot but solid
- 4. Results from force pressing down on an area
- 5. Contains all of Earth's water
- 6. Produced by earthquakes
- 8. Part of Earth that has a metal core, solid middle, and rocky outer layer.
- 10. The outer layer of solid rock where people live on
- 11. part of Earth that contains all living organisms