Astronomy Summative Project

12345678910111213141516171819202122232425262728
Across
  1. 4. a very dense compact star comprised primarily of neutrons
  2. 10. the time a star remains fusing hydrogen and helium in its core
  3. 15. a dense star whose radius is practical the same as earth but whose mass is comparable to the sun
  4. 17. a cloud of gas and dust between the stars
  5. 18. the force exerted by a substance such as gas on an area divided by that area
  6. 22. the visible surface of the sun
  7. 23. a cool luminous star whose radius is much larger than the sun
  8. 25. an object whose escape velocity equals the speed of light
  9. 26. an aging giant star that has consumed its core's supply of hydrogen fuel
  10. 28. the outflow of low-density hot gas from the suns upper atmosphere
Down
  1. 1. the region immediately below the surface of the sun
  2. 2. a star still in its formation stage
  3. 3. the binding of two light nuclei to form a heavier nucleus
  4. 5. a sudden increase in brightness of a small region on the sun
  5. 6. the eclectic change in solar activity
  6. 7. a star whose luminosity changes over time
  7. 8. a star that has a mass too low to begin nuclear fusion
  8. 9. the outer hotter part of the sun
  9. 11. the lower part of the sun's outer atmosphere
  10. 12. an explosion that occurs at the end of some stars evolutionary period
  11. 13. a graph on which stars are located according to temperature and luminosity
  12. 14. the amount of energy radiated by a body per second
  13. 16. the region inside the star where its energy is carried outside by radiation
  14. 19. a shell of gas ejected by a low mass star late in its lifetime
  15. 20. the condition in which pressure and gravitational forces in a star are balanced
  16. 21. extremely energetic particles traveling at the speed of light
  17. 22. the shift in an object's position caused by the observer's motion
  18. 24. a small, old, relatively cool star.
  19. 27. equal to 3.26 light-years