Assign 8.7 Earthquakes
Across
- 3. Mantle plumes of hot rock that rise through the mantle
- 6. Boundaries where the two plates move toward each other.
- 7. The fastest seismic wave
- 9. The edges where two plates meet.
- 12. Movement of the plates over Earth's surface is termed plate _______.
- 13. This layer of the Earth is mostly iron metal and makes up about 31% of the Earth
- 15. Composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid
- 16. This Earth layer is less than 1% of Earth by mass.
Down
- 1. partially molten upper mantle material that behaves plastically and can flow
- 2. Boundaries where the two plates slip past each other.
- 4. Geologist that proposed that the continents were once united into a single supercontinent
- 5. Boundaries where the two plates move away from each other.
- 8. This process occurs at oceanic trenches and when an oceanic plate meets a continental plate.
- 10. This layer of the Earth is hot, ultramafic rock and represents about 68% of Earth's mass
- 11. The point on the Earth's surface directly above the place where the earthquake occurs
- 14. These seismic waves cannot travel through liquid.