Earth's layer and plate tectonics.

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Across
  1. 3. the sudden shaking of Earth's crust caused by the release of energy along fault lines or from volcanic activity.
  2. 4. drift the movement of continents resulting from the motion of tectonic plates.
  3. 6. layer in Earth's mantle between the lithosphere (above) and the upper mantle (below).
  4. 7. outer, solid portion of the Earth. Also called the geosphere.
  5. 9. plate massive slab of solid rock made up of Earth's lithosphere (crust and upper mantle). Also called lithospheric plate.
  6. 12. movement and interaction of the Earth's plates.
  7. 13. person who studies the physical formations of the Earth.
  8. 14. relationship between two or more forces, objects, or organisms.
Down
  1. 1. ancient, giant landmass that split apart to form all the continents we know today.
  2. 2. transfer of heat by the movement of the heated parts of a liquid or gas.
  3. 5. rift in underwater mountain range where new oceanic crust is formed.
  4. 8. process of one tectonic plate melting, sliding, or falling beneath another.
  5. 10. an opening in the Earth's crust, through which lava, ash, and gases erupt, and also the cone built by eruptions.
  6. 11. solid material turned to liquid by heat.