Plate Motion

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Across
  1. 4. Something that we observe to be similar over and over again.
  2. 6. A sudden shaking of the earth’s surface.
Down
  1. 1. The layer of soft and solid rock underneath earth’s plates. Hint: 5 letters and starts with the letter M.
  2. 2. Plates that move away from each other.
  3. 3. Plates that move towards the same place.
  4. 5. How fast something happens Hint:4 letters