Across
- 1. the ability or tendency to float in water
- 4. peices of crushed up rock
- 7. a thin lithospheric plate made of basalt that makes the ocean floor
- 10. peices of the earths lithosphere move over the asthenosphere
- 12. vibration that travel through the world
- 13. the thickest layer of the earth
- 15. a part of the lithosphere ad moves on top of the asthenossphere
- 16. a person who uses physical principals to study the earth
- 18. the degree of compactness of a substance
- 19. a landmass decomposed over a log time
- 20. when two plates come together
Down
- 2. it lies between the upper mantle
- 3. the thought that continents moved around the earths surface
- 5. the hottest layer of the earth
- 6. a thick lithospheric plate made of andesite and granite
- 8. the liquid core
- 9. when two plates move apart
- 11. when lithospheric plates sink to the mantle
- 14. it detects and predicts seismic waves
- 17. a mountai that erupts with lava