Across
- 4. a wave where particles travel parallel to the wave
- 6. slower, destructive waves that follow p waves
- 8. instrument used to study earthquakes
Down
- 1. a wave where particles move perpendicular to the wave
- 2. vibrations that are released during earthquakes
- 3. fast seismic waves that cause the ground to compress and expand
- 5. a scientist who studies earthquakes and seismic waves
- 7. vibrations on the Earth's surface caused by a slipped fault