Earth's Layers/Tectonic Plates Review Crossword

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Across
  1. 3. The name of the single landmass; Before continental drift
  2. 5. A thick, not dense crust under land
  3. 7. The very center of the Earth, liquid material made of Nickel and Iron
  4. 9. Plate boundary when two plates slide against each other; Causes earthquakes
  5. 10. German geophysicist and meteorologist responsible for the theory of Continental Drift
  6. 11. Plate boundary when two plates move away from each other; Forms volcanoes
Down
  1. 1. Soft, tar-like layer of the Earth, moves through convection currents
  2. 2. The very center of the Earth, solid, made of iron
  3. 4. Hot material; lava
  4. 5. Plate boundary when two plates come together; Forms mountains
  5. 6. The very outside layer of the Earth, two types
  6. 8. A dense, thin crust at the bottom of the ocean