Across
- 4. first and fastest waves
- 7. tool used to detect earthquakes
- 9. type of fault that occurs when upper block falls
- 13. the 2004 Sumatra earthquake occured in the __ ocean
- 14. mathmetical measurement of energy released by earthquake
- 16. scale that measures earthquake magnitude (1964)
- 17. plate boundaries that come together
- 18. waves that travel along earth's surface
- 20. amount of strain a material can endure without breaking
- 22. earthquakes cause these in the water
- 23. type of fault where upper block rises
- 24. secondary, slower, stronger, waves
- 27. plate boundary that moves apart
- 28. horizontal line on face of fault that defines a fault
Down
- 1. measure of damage and felt power of earthquake
- 2. crack in large section of rock
- 3. pulling stress
- 5. stree that crushes
- 6. change in shape of material under stress
- 8. center of earthquake above the ground
- 10. any kind of shaking of the ground detected by seismometers
- 11. sliding of soil and rock; an effect of some earthquakes
- 12. the 1906 San Fransisco earthquake caused many of these
- 15. upward force on less dense object (usually in liquid)
- 19. center of earthquake underground
- 21. Scale that measures earthquake intensity; modified __
- 22. boundaries that slide past each other (usually in the ocean)
- 25. plates move across each other at transform boundaries
- 26. seismograph recording