Earth's Layers

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Across
  1. 4. upper layer of earths mantle
  2. 5. creates a magnetic field
  3. 6. is the only liquid layer
  4. 7. is about only 84% of earth's volume
Down
  1. 1. underlies the ocean basins
  2. 2. greek word lithos meaning rocky
  3. 3. is about 22 miles thick