layers of the earth

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Across
  1. 6. The boundary between Earth's crust and mantle. It is also known as the "Moho."
  2. 7. The lower part of the upper mantle that exhibits plastic (flowing) properties on which the continents move.
  3. 8. The outermost, rocky layer of the Earth
  4. 9. The commonest type of solidified lava; a dense dark gray fine-grained igneous rock.
Down
  1. 1. A rocky material that makes up the thickest part of earth's crust not located under the ocean.
  2. 2. The transfer of thermal energy inside the Earth and is the driving force for plate tectonics.
  3. 3. The innermost layer of the earth made of solid iron and nickel.
  4. 4. The thickest layer of Earth, under the crust, in which plate movement is generated.
  5. 5. The outermost layer of Earth's surface which is rocky and solid and includes the rigid part of the upper mantle.