Dakoda and breanna

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Across
  1. 2. rarest rock
  2. 3. 1/3 of earth
  3. 4. branch of science
  4. 8. 3rdlayerof earth
  5. 10. formed underwater
  6. 12. magnesium is used for this
  7. 15. whats the last inner layerof the earth
  8. 17. rock from sand
Down
  1. 1. used for bench tops
  2. 3. whats another name for magma
  3. 5. renuable rock
  4. 6. hard igneous rock
  5. 7. what word comes from latin word ignis meaning fire
  6. 9. what rock is changed by the heat or pressure
  7. 11. what layer of earth is thickest
  8. 13. rock craftsman name
  9. 14. pencil is made of
  10. 16. what is the first outer layerof the earth