Earthquakes vs. Skyscrapers

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Across
  1. 2. small devices that can dampen the effect of earthquakes, usually installed on joints
  2. 5. utilizing triangles to spread the force of an earthquake
  3. 6. a technology that uses a pendulum to counter the motion of building
  4. 9. a technology used to counter the motion of the ground, therefore reducing the effect on the skyscraper
Down
  1. 1. A tall building
  2. 3. walls walls that can take the load of the building
  3. 4. a natural material that is great for building small houses
  4. 7. an alloy that is great for building skyscrapers
  5. 8. A force that devastates entire cities