Topic 4Lesson 3:Earthquakes and Tsunami Hazards

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Across
  1. 2. Seismic waves that move the ground side to side or up and down.
  2. 3. The most destructive seismic waves that move like ocean waves.
  3. 6. Type of stress that squeezes rock together, forming mountains.
  4. 11. An area around the Pacific Ocean with frequent earthquakes and volcanoes.
  5. 13. A fault where the hanging wall moves downward due to tension.
  6. 14. The point on Earth’s surface directly above an earthquake’s focus.
  7. 15. An upward fold in rock that forms mountains.
  8. 16. A massive ocean wave caused by an underwater earthquake or landslide.
  9. 18. A fault caused by compression, where the hanging wall moves up.
  10. 19. The force that acts on rock to change its shape or volume.
  11. 20. Type of stress where rock is pushed in opposite directions.
Down
  1. 1. Type of stress that pulls on the crust and makes it thinner.
  2. 4. Mountains formed when compression bends rock without breaking it.
  3. 5. A downward fold in rock that forms valleys.
  4. 7. A measure of an earthquake’s size based on energy released.
  5. 8. A fault where rocks grind past each other horizontally.
  6. 9. Fastest seismic waves that compress and expand the ground.
  7. 10. A break in Earth’s crust due to stress.
  8. 12. A method used to locate the epicenter of an earthquake.
  9. 17. An instrument used to measure seismic waves.