Across
- 2. The center of energy release
- 5. Most common chemical sedimentary rock
- 7. "birth of mountains"
- 8. Crustal pieces that are attached or a accreted
- 9. "all Earth"
- 10. Vertical elevation differences across the surface
- 12. Release of energy that produces seismic waves
- 14. Fastest shock waves traveling through solid, liquid, and gas
- 15. Point closet to the surface
- 19. Also known as shockwaves
- 20. 3rd most important greenhouse gas produced by human activity
Down
- 1. Spots on volcanoes
- 3. Coarse-grained rocks
- 4. Earth's rigid layer
- 6. Lower and upper ____ represent about 80% of Earth's total volume
- 11. When magma reaches surface
- 13. Study of Earth's past climates
- 16. What forms igneous rocks?
- 17. Measurement of land elevation relative to sea level
- 18. Minerals bounded together