Across
- 4. A device that records details of earthquakes
- 5. a term for the size or extent of something
- 7. smaller earthquake that precedes a larger one
- 9. series of extremely long waves caused by a large and sudden displacement of a body of water
Down
- 1. the point on the earth's surface vertically above the focus of an earthquake.
- 2. The theory of Earth's outer layer broken into large pieces
- 3. environment that degrades it from its initial state
- 6. smaller earthquake following the main shock of a large earthquake.
- 7. Earth's crust along which blocks of rock have moved relative to one another
- 8. Vibrations that travel through the Earth's layers
