Earth's layers

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Across
  1. 4. Segments of the lithosphere that move over the asthenosphere.
  2. 6. Circular movements in the mantle caused by heat, driving plate tectonics.
  3. 7. The rigid outer layer comprising the crust and uppermost mantle.
  4. 8. The solid, plastic layer in the upper mantle below the lithosphere that flows, enabling plate movement.
Down
  1. 1. energy waves from earthquakes used to analyze Earth's interior.
  2. 2. The thin, rocky, outermost solid layer.
  3. 3. Solid, extremely hot, and dense central layer
  4. 5. The strong, lower part of the mantle