LRhoades

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Across
  1. 4. A type of igneous silicate rock
  2. 8. What makes something different
  3. 13. Theory that the crust is made of sections
  4. 15. Measures and charts seismic waves
  5. 16. The middle of Earth
  6. 17. an elastic wave in the earth produced by an earthquake
  7. 18. Rock created from heat and pressure
Down
  1. 1. Second layer of Earth
  2. 2. Plates moving away from each other
  3. 3. Igneous rock created by the cooling of lava
  4. 5. Changing direction
  5. 6. Rock created from hardened lava
  6. 7. a metric unit equal to 1,000 meters
  7. 9. Flow of charged particles from the Sun
  8. 10. Rock created from years of organic material piled up
  9. 11. The magnetic field created by Earth
  10. 12. The study of Earth’s structure and composition
  11. 14. Outermost layer of the Earth