Chapter 22: Sun, Moon, Stars

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Across
  1. 3. measurement from sun to another planet
  2. 7. earth's only natural satellite
  3. 8. gas that accounts for most of the sun's composition
  4. 9. solar fireworks
  5. 12. depressions on surface of moon
  6. 13. tiniest waves, such as gamma rays, are measured in this
  7. 17. Giovanni __ first determined earth's distance from sun
  8. 18. small dark areas on sun that correlate with earth's climate
  9. 20. valley on moon
  10. 21. relating to the moon
  11. 22. second most abundant gas in sun
  12. 23. bright streaks radiating from craters on moon
Down
  1. 1. relating to the sky, heaven, or deities
  2. 2. the sun is made of this type of matter
  3. 4. visible light is measured in this
  4. 5. waves that cause sunburn
  5. 6. everchanging atmosphere of sun; looks like a halo
  6. 10. Day of Creation when GOd made, sun, moon, stars
  7. 11. innermost part of sun's interior
  8. 13. visible surface of the sun
  9. 14. one complete orbit around the sun
  10. 15. a planet spinning on its axis (24 hrs for Earth)
  11. 16. nuclear __ is the process that converts hydrogen to helium in the sun
  12. 19. sudden explosion of energy from sun; more frequent with more sunspots