earthquakes

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Across
  1. 5. when something breaks
  2. 6. where the earthquake strikes.
  3. 7. to measure the magnitude of the earthquake.
Down
  1. 1. when two plates move apart.
  2. 2. how big the earthquake is.
  3. 3. a crack in the earth
  4. 4. tremors that happen after the mainshock.