Across
- 3. Scale that describes the intensity of an earthquake based on its observed effects
- 5. Plate ________ are associated with earthquakes and volcanic activity
- 7. Vibrations in the earth caused by the sudden release of energy
- 9. A fracture in bedrock, along which blocks of rock on opposite sides of the fracture move
- 10. A measure of the damage done by an earthquake
- 12. A scientist who studies the history and structure of the earth
- 14. Earthquake wave that travels through the body of the earth
- 15. A series of sea waves caused by underwater earthquakes
- 17. Earthquake wave that travels slower, and is the second wave to reach the seismograph station
- 18. A measure of the total amount of energy released at the focus of an earthquake
Down
- 1. Point on the surface of the earth directly above the focus of an earthquake
- 2. The movement of a tectonic plate beneath another plate
- 4. An earthquake wave that follows the main shock
- 6. A scientist who studies earthquakes
- 8. Scale that describes the earthquake's magnitude by measuring the seismic waves
- 11. An instrument that detects, records, and measures Earthquakes
- 13. A deep gorge formed on the ocean floor
- 16. The location where the rupture of an earthquake begins and energy is released