Unit 4 Star Life Cycles & Constellations

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Across
  1. 3. location stars are born
  2. 8. star When a star's protons and electrons fuse into neutrons.
  3. 11. a star system with two stars in it
  4. 16. If the mass of a 'failed star' is 12 Jupiter masses or more and it is luminous when first formed, it is a ____________________.
  5. 17. A method that measures a star's pulsation period and its apparent brightness to calculate stellar distances.
  6. 19. Once a low-mass star leaves the main-sequence, this is the stage it will be in.
  7. 20. The fate of a low-mass main-sequence star.
  8. 23. A small, extremely dense carbon core. An envelope about the size of our solar system.
  9. 26. The stage most stars spend in their life cycle.
  10. 27. Patterns of stars as seen from Earth
  11. 28. the massive collapse and then explosion of a high-mass star
Down
  1. 1. In a Red Giant’s core, helium fuses to __________. It has 6 protons.
  2. 2. In the nuclear fusion process within a star, it fuses hydrogen into __________.
  3. 4. The amount of radiation a star appears to emit.
  4. 5. The most massive stars can only fuse up to this element. This element has 26 protons.
  5. 6. Determined by its color and spectral type
  6. 7. An early stage in the star formation process. It is a large mass of gas and dust formed as a result of the contraction of a giant molecular cloud in the interstellar medium.
  7. 9. When the inward force of the star’s gravitational pull is balanced by the outward push of the gas pressure within the star.
  8. 10. A method that combines spectral analysis and apparent brightness to calculate stellar distances.
  9. 12. a large ball of hot gas fueled by nuclear fusion
  10. 13. The process of a smaller molecules binding with another molecule to form a larger molecule from an immense amount of heat and pressure, and it release a tremendous amount of energy.
  11. 14. a star system with one star
  12. 15. a large place in space with an immense gravitational pull where nothing can escape, not even light.
  13. 18. The total amount of radiation emitted from a star.
  14. 21. When helium fuses extremely rapidly; within hours the enormous energy output is over, & the star once again reaches equilibrium.
  15. 22. A method that measures the apparent shift in a star's position when viewed from different points in Earth's orbit calculates stellar distances.
  16. 24. the fuse for a star in nuclear fusion & it has 1 proton
  17. 25. Classified into different types based on their spectral lines, including from highest to lowest surface temperatures: O, B, A, F, G, K, and M.