Earthquakes

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Across
  1. 1. smaller earthquakes after a larger one
  2. 3. when the tectonic plates slide against eachother
  3. 6. two tectonic plates that are moving away from each other
  4. 7. a word use to describe the outer two layers of the earth
  5. 8. what is the layer under the earths crust called?
  6. 10. an instrument used to record the motion of the ground during an earthquake
Down
  1. 2. when one tectonic plate goes on top of another
  2. 4. what is the name of the scale that measures an earthquakes magnitude
  3. 5. what is the earths outer layer called?
  4. 9. the size of the earthquake