Crossword about Mountains, Earthquakes

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Across
  1. 3. The event that happens following seismic waves
  2. 5. waves that travel through earth during a quake
  3. 6. location underground where the earthquake begins
Down
  1. 1. Boundary where the plates move apart
  2. 2. the force that causes rocks to break
  3. 4. The location on Earth’s surface directly above the focus
  4. 6. Location underground where an earthquake begins