Across
- 3. Magnitude Scale that estimates the total amount of energy released by an earthquake
- 6. Waves that travel along Earth's outer layer
- 8. Waves that travel along Eath's outer layer at right angles
- 10. waves that push and pull in the direction that the waves travel
- 12. a small earthquake that follows after the main Earthquake
Down
- 1. instruments that record Earthquake waves
- 2. a small Earthquake that often comes before an Earthquake
- 4. the point within the Earth where the Earthquake starts
- 5. fractures in Earth where movement has occurred
- 7. Scale based on the amplitude of the largest seismic wave
- 9. the vibration of Earth produced by the rapid release of energy
- 11. the location on the surface directly above the focus