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ES High mass star life cycle plus black holes Tuesday, April 18, 2017 DATE 7:34 AM TIME 4/18/17 7:25 A.M. NESW DEGREES N IS 0 E IS 90 ALTITUDE OBJECT DESCRIPTION: DEGREES Is it waxing (getting larger) or waning STRAIGHT (getting smaller)? Is it UP=90 rising or setting? Draw HORIZON IS 0 a picture: MOON Now we are going to have a little practice quiz. On Thursday we watched a video about the life cycle of a low mass star. What I would you to attempt is to draw the life cycle of a low mass star. All stars start as a nebula and this is also the ending point for many stars so this a true cycle. Protostar Main sequence star White dwarf Red giant nebula play noun neb·u·la \ˈne-byə-lə\ Definition of nebula for Students plural nebulae \-ˌlē\ or nebulas 1. 1: any of many clouds of gas or dust seen in the sky among the stars 2. 2: galaxy 2 From <https://www.merriam-webster.com/dictionary/nebula> C8 Page 1 http://nate-thegreat.weebly.com/blog/the-life-cycle-of-low-mass-stars http://www.lcsd.gov.hk/CE/Museum/Space/archive/EducationResource/Univ erse/framed_e/lecture/ch15/ch15.html 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Will we be killed by a supernova? Explain why or why not? What is the life cycle of a low mass star (5 stages)? What is the life cycle of a high mass star? What is the heaviest element forms in the center of a high mass star? Why is supernova crucial to our existence? Where is calcium formed in the life a high mass star? What is a supernova? What are the 2 final stages of a high mass star? It is either one or the other. What makes the difference between? What forms a supernova? What happens to stars with less than 8 solar masses? What happens to stars with greater 8 solar masses, but less than 20 solar masses? What happens to stars with greater than 20 solar masses? Where does gold form? How was planet Earth formed according nebular theory? What elements do we get from low mass stars? What elements do we get from high mass stars? What elements do we get from supernovae? Which star dies faster low mass or high mass? Why? C8 Page 2 CRASH COURSE VIDEO ON LIFE CYCLE OF A HIGH MASS STAR: BLACK HOLE VIDEO: https://youtu.be/e-P5IFTqB98 C8 Page 3