4.2 Science Crossword

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Across
  1. 3. plate boundary, where two tectonic plates slide horizontally past each other
  2. 6. crust, made mostly of granite and less dense than oceanic crust
  3. 9. when the denser crust eventually goes below the less dense crust
  4. 10. convection, when cooler denser material sinks and warm, less dense material rises
  5. 11. plate boundary, where two tectonic plates collide
Down
  1. 1. plate boundary, where two tectonic plates move apart
  2. 2. plates, parts of the crust and uppermost mantle that move over earth’s surface
  3. 4. pull, pulling of a tectonic plate due to gravity and subduction
  4. 5. the rigid outer part of the earth
  5. 7. crust, made mostly of basalt and denser than continental crust
  6. 8. push, new material pushing old material away causing tectonic plates to move apart