LDeBrowner Astronomy Crossword

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Across
  1. 2. an igneous rock that is granular and crystalline
  2. 4. an instrument that measures earthquakes
  3. 7. when the solar wind gets caught in the magnetic field, these are formed
  4. 8. a unit of measurement that is equal to 1000 meters
  5. 11. rock formed from buildup and cementing
  6. 13. the center of Earth
  7. 16. the melting and separation of materials
  8. 17. rock formed by physical and chemical alteration
  9. 18. charged particles coming from the sun
Down
  1. 1. the magnetic field around a planet
  2. 3. a grainy volcanic rock that appears in pillars
  3. 5. a wave in the earth produced by earthquakes
  4. 6. the motion of Earth’s plates over the mantle
  5. 9. when light changes direction at an angle
  6. 10. the outer layer of the Earth
  7. 12. rock formed from a molten state
  8. 14. the study of Earth
  9. 15. the middle layer of the Earth