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Across 1. the hanging wall moves up relative to the footwall (2 Words) 5. a large area of of flat elevated land high above sea level 6. determined by measuring the sismic waves and fault movement 8. the zig zag pattern of lines used to represent an earthquake 11. a stress force that pulls on the crust 12. occurs when an earthquakes violent shaking turns soft soil into liquid mud 13. a force that acts on rock 15. rocks on either side of the fault slip past each other. (3 Words) 16. the area beneath Earth's surface where rock that is under stress breaks, triggering an earthquake 18. the shaking and trembling that results from the movement of rock beneath Earth's surface 19. a sress force that pushes a mass of rock in two opposite directions 20. a fold of rock that bends downward 23. the hanging wall slips down (2 Words) 24. Developed the theory of plate tectonics (3 Words) 25. The point on the surface directly above the focus 26. move more slowly than P Waves and S Waves (2 Words) 28. measures seismic waves 29. water displaced by an earthquake 30. carries energy from an earthquake away from the focus (2 Words) 31. the rock that lies below the fault (2 Words) 32. the rock that lies above the fault (2 Words) 33. the force that opposes mothion

Down 2. rating of an earthquakes magnitude (2 Words) 3. and earthquake that occurs after a larger earthquake in the the same area 4. Developed the theory of sea floor spreading (2 Words) 6. was developed to rate earthquakes according to the level of damaage (2 Words) 7. rating system that estimates the the total energy released by an earthquake (3 Words) 9. seismic waves that vibrate from side to side as well as up and down (2 Words) 10. measures titling or raising of the ground 14. scientist use this to monitor changes in elevation as well as horizontal movement along faults (2 Words) 17. uses a wire stretched across the fault to measure horizontal movement (2 Words) 21. sesimic waves that compress and expand (2 Words) 22. a stress force that squeezes rock 27. a fold of rock that bends upward in an arch