The Earth's Interior and Plate Tectonics

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Across
  1. 1. The planet we live on
  2. 4. Super continent
  3. 6. Made up of the crust and tiny bit of the upper mantel, also holds the continents and oceans
  4. 8. A thickness of some material laid on or spread over a surface
  5. 9. In the upper mantel, directly underneath the lithosphere
  6. 11. A region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle.
  7. 13. A period 299 million years ago* during the late Paleozoic Era
  8. 15. A natural elevation of the earth's surface rising more or less abruptly to a summit
  9. 17. A vent in the earth's crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals.
  10. 19. The layer in which we live on
  11. 20. A proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation
Down
  1. 2. Discover of the continental drift
  2. 3. A series of vibrations induced in the earth's crust
  3. 5. States that the Earth's outer layer is broken into several large slabs
  4. 7. A theory explaining the structure of the earth's crust
  5. 10. The biggest layer in Earth
  6. 12. An extremely hot, solid sphere of mostly iron and nickel at the center of the earth
  7. 14. We have this with Mrs.Guiett at 6th hour
  8. 16. The core right behind the mantel
  9. 18. The molten fluid rock that issues from a volcano or volcanic vent