Across
- 3. a building mounted on bearings designed to absorb the energy of an earthquake
- 9. a scale that rates earthquakes according to their intensity and how much damage they cause
- 11. a type of seismic wave that moves the ground up and down or side to side
- 13. a type of seismic wave that compresses and expands the ground
- 14. a mountain that forms where a normal fault uplifts a block of rock
- 16. stress that pushes a mass of rock in opposite directions
- 17. a device the records the ground movements ground movements caused by seismic waves as they move through earth
- 20. a change in the volume or shape of earths crust
- 22. stress that stretches rock so that it becomes thinner in the middle
- 24. the point beneath earths surface where rock breaks under stress and causes an earthquake
- 25. stress that squeezes rock until it folds or breaks
Down
- 1. a scale that rates seismic waves as measured by a particular type of mechanical seismograph
- 2. the process by which an earthquakes violent movement suddenly turns loose soil into liquid mud
- 4. the point on earths surface directly above an earthquakes focus
- 5. the measurement of an earthquakes strength based on seismic waves and movement along faults
- 6. a large wave produced by an earthquake on the ocean floer
- 7. the shaking that results from the movement of rock beneath earths surface
- 8. a large area of flat land elevated high above sea level
- 10. the block of rock that forms the upper half of a fault
- 12. an earthquake that occurs after a larger earthquake in the same area
- 15. a break in earths crust where slabs of rock slip past each other
- 18. a vibration that travels through earth carrying the energy released during an earthquake
- 19. an upward fold in rock formed by compression of earths crust
- 21. a bend in rock that forms where part of earths crust is compressed
- 23. a type of fault where the hanging wall slides downward; caused by tension in the crust
- 24. the block the forms the lower half of a fault