III Quarter 8th Grade Earth Science Quiz #1

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Across
  1. 4. theory that explains how large pieces of Earth’s lithosphere move and change Earth’s surface
  2. 6. force that moves plates away from a mid-ocean ridge
  3. 8. transfer of heat by the movement of material due to differences in density
  4. 9. process in which one tectonic plate sinks beneath another
Down
  1. 1. rigid outer layer of Earth made of the crust and upper mantle
  2. 2. boundary where two tectonic plates move toward each other
  3. 3. boundary where two tectonic plates move away from each other
  4. 5. boundary where two tectonic plates slide past one another
  5. 7. force caused by a sinking plate pulling the rest of the plate with it