Plate Tectonics

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Across
  1. 6. the solid outer layer of Earth that consists of the crust and the rigid upper part of the mantle.
  2. 7. the hypothesis that states the continents once formed a single land mass, broke up, and drifted to their present locations.
  3. 8. the boundary between tectonic plates that are colliding.
  4. 9. the solid, plastic layer of mantle beneath the lithosphere; made of mantle rock that flows very slowly, which allows tectonic plates to move on top of it.
  5. 10. the boundary between tectonic plates that are sliding past each-other horizontally.
Down
  1. 1. the process by which new oceanic lithosphere (sea floor) forms as magma rises to Earth's surface and solidifies at mid-ocean ridge.
  2. 2. the study of the alignment of magnetic minerals in rock, specifically as it relates to to reversal of Earth's magnetic poles.
  3. 3. a long, undersea mountain chain that has steep, narrow vally at its center, that forms as magma rises from the asthenosphere and that creates new oceanic lithosphere.(sea floor)
  4. 4. the theory that explains how large pieces of the lithosphere, called plates, move and change shape.
  5. 5. the boundary between tectonic plates that are moving away from each-other.