Earth's spheres

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Across
  1. 6. Upper most layer of the continental lithosphere
  2. 9. Name given to the material below the solid surface of the Earth
  3. 10. A name given to the larger portion of the mantle that is hot, ductile and flows
  4. 12. Innermost layer of the geosphere - two words
  5. 16. Most abundant element in the solar system
  6. 17. Second most abundant element in the mantle and crust
Down
  1. 1. Oceanic ______ plate
  2. 2. Most dominant group of minerals found in the crust and mantle containing silicon and oxygen
  3. 3. Most abundant element in the atmosphere
  4. 4. A gaseous, outermost member of Earth’s group of four spheres
  5. 5. Most abundant element in the core
  6. 7. A common mineral with a density and composition like that of the whole Earth
  7. 8. Most abundant compound of the hydrosphere
  8. 11. Second most abundant compound in the hydrosphere (two words)
  9. 13. Second most abundant element of the atmosphere
  10. 14. Name of the force that helped the planets to form
  11. 15. Second most abundant element in the solar system