Geology and Earth's Dynamics Crossword

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Across
  1. 4. Type of rock that has been changed by heat and pressure.
  2. 6. A type of boundary where two tectonic plates move apart.
  3. 8. Tectonics: Theory explaining the movement of Earth's lithosphere.
  4. 9. Type of rock formed from cooled and solidified magma or lava.
Down
  1. 1. The process by which one tectonic plate sinks beneath another.
  2. 2. Spreading: The process by which new oceanic crust forms as magma rises at mid-ocean ridges.
  3. 3. Currents: Circular currents in the mantle caused by the heat of Earth's core.
  4. 5. Type of rock formed from the accumulation of mineral and organic particles.
  5. 7. Boundary: A type of boundary where two tectonic plates slide past each other horizontally.