WHAT ARE EARTHQUAKES

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Across
  1. 2. a crack in a boundary
  2. 3. to soak up or take in
  3. 7. to crash into each other
  4. 8. to act on or influence each other
  5. 10. energy released in waves
Down
  1. 1. giant wave
  2. 4. a line that forms an edge
  3. 5. anything built
  4. 6. huge parts of Earth's crust on which the continents and oceans rest
  5. 9. the power to use in action and work