Natural Disasters

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Across
  1. 3. ___________ is caused by dry conditions.
  2. 5. Building collapses during an _________.
  3. 6. Tidal waves is another word for ________.
Down
  1. 1. People who study earthquakes.
  2. 2. __________ are rolling waves which rush towards the seashore.
  3. 4. The earth's upper layer, the crust, is made of large and small ____.
  4. 7. The layers under the plates are constantly ___________.