Across
- 4. A natural disaster on Earth, such as an earthquake, tornado, or flood.
- 5. A sudden shaking of earth's surface.
- 8. The size or strength of something, such as an earthquake or tsunami.
- 9. Moving apart in different directions.
- 10. The process by which rock material moves under Earth's outer layer and into the mantle due to plate motion.
Down
- 1. Moving toward the same place.
- 2. Any of the many processes (such as eruptions and lava flows) in which gas, lava, and ash are pushed out.
- 3. The place where two plates meet.
- 6. A large ocean wave caused by a sudden shift in the plates.
- 7. Something we observe to be similar over and over again.