Stars

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Across
  1. 2. Core The inner most layer of the Sun where energy is generated through nuclear fusion (converting Hydrogen into Helium) takes place.
  2. 5. Stars with average temperature, like our Sun, are this color
  3. 6. Magnitude Describes the actual brightness of a star without considering the distance from the observer.
  4. 7. Magnitude The brightest of a star as it appears from Earth.
  5. 8. A massive ball of plasma (very hot gas) that emits light and heat
  6. 11. stars with absolute brightness greater than main sequence stars but less than supergiant stars
  7. 12. flare A sudden, BRIGHT eruption of intense high-energy radiation from the sun's surface; can affect Earth's satellites and technology that relies on satellites
  8. 20. zone Layer of the Sun immediately surrounding the core where energy moves from atom to atom as electromagnetic waves.
  9. 21. the visible surface of the sun
  10. 22. diagram Hertzsprung-Russel diagram, a graph that shows the relationship between a star's surface temperature and absolute magnitude
  11. 23. _______ numbers for apparent magnitude mean a star will appear bright because it is close, even if its absolute brightness is low. Our Sun has apparent magnitude of -26 L
  12. 24. small stars that are dim
  13. 25. A dark area of gas on the sun's surface that is cooler than surrounding gases.
  14. 26. hot stars on found on this side of an HR Diagram
Down
  1. 1. Zone lowest layer of the Sun's atmosphere; gases circulate in convection currents, bringing the sun's energy to the surface (convective zone is another name)
  2. 3. Fusion Process that generates the Sun's energy within the core
  3. 4. Hot gas that is more energetic than normal gas; what stars are made of
  4. 9. unit A unit of length used for distances within the solar system; distance between Earth and the Sun
  5. 10. prominence huge loops of gas that extends out past the sun's chromosphere and into the corona
  6. 13. The middle layer of the sun's atmosphere
  7. 14. extremely large stars with the greatest possible absolute brightness
  8. 15. bright stars are located on the _____ of an HR Diagram
  9. 16. The outer layer of the sun's atmosphere; "crown"
  10. 17. sequence star 90% of all stars are in this stage (even our Sun) - If HOT then bright, if cool then dim.
  11. 18. on the bottom of an HR Diagram are the ____ stars
  12. 19. if we know the color we know the star's ____________; red=coolest & blue=hottest