Across
- 3. rate magnitude of small earthquake's size
- 5. instrument that records an earthquake's seismic waves
- 10. a fault zone where two blocks of land move horizontally rather than vertically along a fault plane
- 12. a dip-slip fault in which the block above the fault has moved downward relative to the block below
- 13. a number based on the earthquake's size
- 14. a sudden and violent shaking of the ground
- 15. a fault in which the rock above the fault plane is displaced upward relative to the rock below the fault plane
- 20. rate total energy a earthquake releases
Down
- 1. plates come together
- 2. record of an earthquake's seismic waves produced by a seismograph
- 4. point directly above the focus
- 6. seismic waves that vibrate side to side or up and down
- 7. rates amount of shaking from an earthquake
- 8. seismic waves that expand like an accordian
- 9. large area of flat land
- 11. plates pull apart
- 16. slow but can produce severe ground movements
- 17. area of rock that begins to break or move
- 18. mountain that forms when magma reaches the surface
- 19. plates slip past each other