WCHS Week 6 - Life Cycle of Stars Vocabulary Review (v1)

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Across
  1. 2. The thinly spread gas and dust that gradually collapses to form nebula
  2. 3. A star forming region of space (the birthplace of stars).
  3. 4. The final stage for a white dwarf that has cooled
  4. 8. Low and high mass stars are divided by whether they are more or less than this many times the mass of our sun.
  5. 9. The balancing of forces of nuclear energy release and gravitational compression
  6. 10. Stars spend the majority of their lifespan fusing this element into helium.
  7. 13. This element can only be fused in high mass stars (those whose mass is more than 8x that of our sun).
  8. 16. A dead star that has become a very dense ball of matter with an intense gravitational attraction, from which nothing can escape.
  9. 17. Stars that begin as blue main sequence stars will expand, turning into this star type.
  10. 19. The fusion of this element marks the end stage for a high-mass star.
  11. 20. This type of star (like our sun) has a lifespan around 10 billion years.
Down
  1. 1. The glowing region of hot gas (plasma) cast off at the end of a low-mass star’s life
  2. 5. The joining together of two smaller atoms into a larger atom that releases energy
  3. 6. Form after a supernova, they spin rapidly and emit x-rays.
  4. 7. This smallest star has a lifespan of 1 trillion years.
  5. 11. A stage of a stars life cycle where the core collapses and the outer layers expand due to running out of hydrogen for fusion
  6. 12. The life cycle stage for a low-mass star after its red giant phase
  7. 14. The beginning of a star's lifecycle as dust and gas gather, but before fusion begins.
  8. 15. The massive explosion of a star accompanied by emission of light and matter
  9. 18. Form after a supernova and emit pulses of energy.