8S Lessons 4.1-4.3 Vocabulary

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Across
  1. 3. Stress that squeezes rock until it folds or breaks
  2. 7. Seismic waves that move slowly, but produce severe ground movements
  3. 10. Stress that stretches rock so that it becomes thinner in the middle
  4. 15. An instrument that records and measures an earthquake’s seismic waves
  5. 17. A type of fault in which rocks on either side slide past each other in a sideways motion; caused by shearing stress
  6. 18. A scale that rates earthquakes by estimating the total energy released by an earthquake
  7. 19. A type of fault where the hanging wall slides downward; caused by tension stress in the crust
  8. 20. A force that acts on rock to change its shape or volume
  9. 21. Seismic waves that can vibrate from side to side
Down
  1. 1. Seismic waves that compress and expand the ground like an accordion
  2. 2. The area beneath Earth’s surface where rock that was under stress begins to break or move
  3. 4. Stress that pushes masses of rock in opposite directions, in a sideways movement
  4. 5. A type of fault where the hanging wall slides upward; caused by compression stress in the crust
  5. 6. The shaking and trembling that results from movement of rock beneath Earth’s surface
  6. 8. A scale that rates the amount of shaking from an earthquake
  7. 9. A large landform that has high elevation and a more or less level surface
  8. 11. The record of an earthquake’s seismic waves produced by a seismograph
  9. 12. Vibrations that are similar to sound waves, and travel through Earth carrying energy released by an earthquake
  10. 13. The measurement of an earthquake’s strength based on seismic waves and movement along faults
  11. 14. The point on the surface directly above the focus
  12. 16. A scale that rates an earthquake’s magnitude based on the size of its seismic waves