Across
- 3. thickest layer
- 4. The heat causing the rocks to rise and fall
- 8. allows plates to move
- 9. stronger than the asthenosphere
- 10. made of soild iron and nickel
Down
- 1. waves created by earthquakes and other tectonic plates
- 2. ridgid, earthquakes
- 5. least dense layer of the earth
- 6. made of liquid iron and nickel
- 7. the amount of mass in an object