Planets

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Across
  1. 4. Core The central part of the earth's core, extending from a depth of 3160 miles (5100 kilometers) to the center of the earth. Also known as siderosphere.
  2. 6. the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
  3. 9. The exterior portion of the earth that lies above the Mohorovii discontinuity.
Down
  1. 1. the rigid outer part of the earth, consisting of the crust and upper mantle
  2. 2. the central part of the earth, beneath the mantle, consisting mainly of iron and nickel, which has an inner solid part surrounded by an outer liquid part.
  3. 3. The layer of the earth between the crust and the core.
  4. 5. the region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude.
  5. 7. Plate A theory that explains the global distribution of geological phenomena such as seismicity, volcanism, continental drift, and mountain building in terms of the formation, destruction, movement, and interaction of the earth's lithospheric plates.
  6. 8. Core The outer or upper zone of the earth's core, extending to a depth of 3160 miles (5100 kilometers), and including the transition zone.