crossword

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Across
  1. 1. crust : it is thicker but less dense
  2. 4. : study of the atmosphere and weather
  3. 5. : it is made up of the crust and upper mantle
  4. 7. crust : it is thinner but denser
  5. 8. produce where there is a disturbance in the medium
  6. 9. boundaries : the edges of the tectonic plates
  7. 10. boundary : plate that are moving away from each other
Down
  1. 2. : it is the sudden movement of the Earth crust
  2. 3. study of the SOLID earth
  3. 6. : it is the point on the surface of the earth directly above the focus of an earthquake