plate tectonic

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Across
  1. 5. when two plates slide past each other
  2. 7. part of the lithosphere
  3. 8. mid-ocean ridges and rift valleys occur at divergent boundaries
  4. 9. dark-colored rocks called basalt and gabbro
  5. 10. there are two tectonic plates moving away from each other in opposite directions
Down
  1. 1. is where two tectonic plates come together or converge and overlap
  2. 2. the movement of the Earth's continents relative to each other, thereby appearing to drift together across the
  3. 3. plate movement is caused by convection currents in the molten rock or magma that is housed in the mantle
  4. 4. the rigid outer part of earth consisting of the crust and upper mantle
  5. 6. a chain of volcanoes, hundreds to thousands of miles long, that forms above a subduction zone.