Across
- 2. all three types of seismic waves
- 3. ridged shell
- 5. weak layer of Earth
- 13. ocean floor shifts suddenly during an earthquake
- 14. a fault to spring back after an earthquake
- 17. location of the surface directly above the focus
- 18. the point within Earth where an earthquake starts
- 19. a solid rocky shell that extends to 2890 km.
- 20. thin rocky outer layer of Earth
- 21. area along a fault where there hasn't been a earthquake in a long period of time
Down
- 1. more precise means of measuring earthquakes
- 4. a reference for the amount of ground movement
- 6. body waves reach the surface
- 7. the vibration of Earth produced by the rapid release of energy
- 8. earthquake that happens after the first one
- 9. caused by slippage along the break in the lithosphere
- 10. boundary that separates the crust and mantle
- 11. liquid layer
- 12. a sphere having a radius of 1220 km
- 15. soil and rock is saturated with water
- 16. wave that is similar to when a stone is dropped in a calm pond
- 22. shake particles at right angle
- 23. compress,or push and expand