Layers of the Earth

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Across
  1. 4. Molecules that contain carbon are said to be _____.
  2. 5. One of the two metals found in the outer core.
  3. 7. Only layer of the Earth that is molten. (liquid)
  4. 8. Thinnest layer of the Earth.
  5. 9. Crust found under the Earth's seas.
  6. 11. Considered the most important substance found on Earth, it is critical to life on Earth.
  7. 13. One of the biogeochemical cycles found on Earth.
  8. 14. All water, ice, and vapor found on Earth's surface, underground and in the atmosphere.
  9. 15. Type of crust on which we walk and most humans live.
  10. 18. Innermost layer of the Earth.
  11. 20. Crust and the upper portion of the mantle.
Down
  1. 1. The movement of Earth's rigid lithosphereic plates over the underlying mantle.
  2. 2. Circulation motion of rock in the mantle.
  3. 3. Area of the Earth where life exists.
  4. 6. Thickest layer of the Earth's interior
  5. 10. Layer of gases surrounding the Earth's surface.
  6. 12. Most of the Earth is this phase of matter.
  7. 16. One of the two metals found in the outer core.
  8. 17. Upper layer of the mantle where convection currents are found.
  9. 19. Hottest layer of the Earth is the _____ core.