Stellar Astronomy-Honors

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Across
  1. 5. a negatively charged atomic particle
  2. 9. when hydrogen atoms combine to form helium atoms
  3. 10. causes atoms to move so fast that they collide and fuse in Sun's core
  4. 11. longest electromagnetic waves, often bigger than a football field
  5. 12. atom with a different number of protons and electrons
  6. 15. color on visible spectrum with lowest frequency
  7. 18. how often wavs pass by per second
  8. 19. used to organize the periodic table; equal to number of protons
  9. 20. a positively charged atomic particle
  10. 21. repeats every 10-12 years with high or low solar activity
  11. 23. a stream of charged particles from Sun that cans excite Earth's atmosphere
  12. 25. Earth's ___ protects us from most solar wind but allows some to reach polar regions
  13. 27. where photon light it emitted from the Sun, also where sunspots are observed
  14. 29. electromagnetic wave slight longer than visible light
  15. 30. process where lighter atoms combine to form more massive atoms
  16. 31. why atoms like hydrogen collide and fuse in core of stars
  17. 32. photons rise quickly on hot gases towards he surface
  18. 34. distance between 2 consecutive waves
  19. 37. electromagnetic wave slightly shorter than visible light
  20. 40. stars approaching us show their visible spectrum do this
  21. 41. only electromagnetic wave that human can detect with eyes
  22. 42. regions on the photosphere where intense solar storms erupt
Down
  1. 1. the type of images created by studying invisible EM wavelengths
  2. 2. atomic particle that has both positive and negative charges
  3. 3. blocks most electromagnetic waves from reaching Earth's surface
  4. 4. where photons take a slow random walk outwards
  5. 6. atom that has gained electrons in its cloud
  6. 7. color of stars emitting higher temperature
  7. 8. average weight of atom; sum of protons and neutrons
  8. 13. upper atmosphere where ionized gases escape Sun's gravity to create solar wind
  9. 14. shortest electromagnetic waves on the spectrum
  10. 16. the range of wavelengths stars give off from gamma to radio
  11. 17. lower atmosphere where solar storms are held tightly by Sun's gravity
  12. 20. atom that has lost electrons ("are you sure?")
  13. 22. where the Sun undergoes hydrogen fusion
  14. 24. the study of visible star light emitted; can tell us temperature, composition, and movement
  15. 26. a packet of radiation including heat, light, and electromagnetic spectrum
  16. 28. brilliant light display when Earth's atmosphere is excited by solar wind
  17. 33. harmful electromagnetic waves used in doctors or dentists office
  18. 35. color on visible spectrum with shortest wavelength
  19. 36. stars moving away from us show their visible spectrum do this
  20. 38. color of stars that emit lower temperatures
  21. 39. most massive part of an atom containing protons and neutrons