Chapter 22: The Sun, Moon, and Earth

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Across
  1. 1. appearance that stars move through sky due to earth's rotation p.546
  2. 5. largest mare on the moon p. 542
  3. 9. sudden burst of energy from the sun p. 538
  4. 11. hydrogen forms helium in this process p. 534
  5. 13. distance from crest to crest (notes)
  6. 14. visible surface of the sun p.535
  7. 15. one-billionth of a meter; used to measure gamma rays p. 532
  8. 18. sun's atmosphere beyond the photosphere p. 535
  9. 19. solar fireworks that loop back to the sun p. 535
  10. 20. outer atomsphere of the sun seen during a solar eclipse p. 535
  11. 22. bright streak radiating from some craters on moon, especially Tycho p. 542
  12. 23. the sun is made of this p. 534
  13. 24. another name for the electromagetic spectrum p. 532
  14. 28. moon seems to get larger p. 548
  15. 29. occurs when one celestial body blocks light from sun to another body p. 550
Down
  1. 2. when moon appears dark p. 548
  2. 3. cooler, darker regions of sun that correlate with earth's temps. p. 536
  3. 4. number of crests that pass a given point in a second (notes)
  4. 6. __ light is felt as heat; starting around 700 nm p. 532
  5. 7. moon seems to decrease in size p. 548
  6. 8. elevated mounds on the moon, possible made from extinct volcanoes p. 543
  7. 10. motion a planet takes when it moves around the sun p. 546
  8. 12. unit used to measure distance in space p. 531
  9. 16. when moon is closest to earth in its orbit; super moons occur p. 547
  10. 17. earth spinning on its axis; takes 24 hrs p. 547
  11. 21. an astronomical body that revolves around another p. 539
  12. 25. moon is farthest from earth in orbit p. 547
  13. 26. valley on the moon p. 543
  14. 27. depressions on the surface of the moon p. 541