KReed Crossword

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Across
  1. 7. A very hard igneous rock.
  2. 9. Where a tectonic plate sinks into the mantle.
  3. 11. A volcanic rock.
  4. 12. Two regions that surround Earth at several thousand feet.
  5. 13. A region with that makes island chains to form.
  6. 16. The visible difference of different layers.
  7. 17. Outer most layer on the earth.
Down
  1. 1. An instrument that records earthquakes.
  2. 2. A rock that is formed by sediment.
  3. 3. A region that surrounds earth with a magnetic field.
  4. 4. A rock that is solidified lava.
  5. 5. An elastic wave that is produced by an earthquake.
  6. 6. The theory of explaining Earth’s crust.
  7. 7. The science that deals with Earth’s structure.
  8. 8. The process that causes earthquakes.
  9. 10. The process that moves tectonic plates.
  10. 14. What is it called when light bends
  11. 15. The process that causes volcanoes.