Moises and Stetson's Astronomy Crossword

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Across
  1. 2. imaginary lines stretching horizontally from east to west
  2. 8. the fastest seismic waves that are compressional and travel through the earth
  3. 9. typically in September, where the length of the day is the same as the length of the night
  4. 11. thinnest layer above the mantle
  5. 12. the day of the year where the length of the day is longer than the length of the night
  6. 13. the bending of waves as they pass through a density of a material to a different density of a material
  7. 14. the day of the year where the length of the night is longer than the length of the day
  8. 15. least dense part of the crust, made up of mostly granite
  9. 16. imaginary lines stretching vertically from north to south
Down
  1. 1. waves that travel through the earth or along the earth's surface
  2. 3. solid layer in the center of the earth, made up of mostly iron
  3. 4. the slowest seismic waves that are transverse waves that travel through the earth
  4. 5. the separation of earth into layers of different densities, with the largest densities towards the center
  5. 6. typically in March, where the length of the day is the same as the length of the night
  6. 7. liquid layer in the center of the earth, made up of mostly iron
  7. 10. most dense part of the crust, made up of mostly basalt