Across
- 2. When two plates move TOWARD each other
- 3. When two plates move AWAY from each other
- 5. This is the scale scientists use to measure the strength of an earthquake
- 7. A scientific theory that explains how plates making up Earth's crust move
Down
- 1. This equipment measures the strength of an earthquake
- 4. This natural disaster can also initiate an earthquake
- 6. The sudden and sometimes violent shaking of the Earth